Area Forecast Matrices
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
637 FOUS53 KLSX 121347 AFMLSX Area Forecast Matrices National Weather Service Saint Louis MO 846 AM CDT Wed Aug 12 2026 ILZ100-101-MOZ061-063-064-122100- Madison IL-Saint Clair IL-Saint Charles MO-Saint Louis MO- Saint Louis City MO- Including the cities of Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 76 94 77 97 Temp 87 91 93 91 83 80 78 77 83 90 94 87 84 82 79 77 88 94 97 93 Dewpt 75 75 75 77 74 73 72 71 75 74 74 74 74 73 72 71 73 73 73 76 RH 68 60 56 64 74 79 82 82 77 60 53 65 72 74 79 82 61 51 46 58 Wind dir W SW SW SE SE SE S S S SW S S S S SW W SW SW S SE Wind spd 6 5 5 4 5 4 4 4 5 5 6 5 5 5 4 3 4 4 4 4 Clouds CL SC SC SC SC SC B1 B1 SC SC SC SC SC FW SC SC SC SC FW FW PoP 12hr 30 40 20 5 5 QPF 12hr 0.00-0.12 0.00-0.66 0.00-0.06 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs SC S S S C S Tstms SC S S S C S Heat index 97102104104 89 84 91100105 96 92 87 80 95104108105 Max heat 106 110 103 91 103 111 102 90 109 113 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 99 77 97 74 88 69 87 Temp 82 77 96 94 82 78 95 92 79 74 86 83 73 70 84 84 Dewpt 73 70 74 74 70 68 73 74 73 71 74 72 70 68 71 71 PWind dir SE SW S W N N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW SC B1 SC SC SC SC SC PoP 12hr 0 0 0 5 20 30 10 10 Rain shwrs S C S Tstms S S S $$ MOZ049-050-122100- Osage MO-Callaway MO- Including the city of Fulton 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 76 97 76 97 Temp 85 91 94 90 83 80 78 76 84 92 97 91 84 81 78 76 86 94 97 92 Dewpt 73 73 73 75 72 71 70 70 72 72 71 72 72 71 70 69 70 70 70 73 RH 67 56 51 62 70 74 76 82 67 52 43 54 67 72 76 79 59 46 42 54 Wind dir SW SW SW S SE SE SE S SW SW S S S S S S SW SW S SE Wind spd 8 6 6 4 4 4 5 5 6 6 6 4 5 5 5 4 5 5 5 3 Wind gust 17 14 17 17 16 16 Clouds CL SC FW SC SC SC SC SC B1 SC FW FW FW FW SC SC SC FW FW FW PoP 12hr 10 20 10 10 0 QPF 12hr 0.00-0.07 0.06-0.63 0.00-0.25 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS S Tstms IS S Heat index 92100103101 88 83 89100106 99 89 84 91101105100 Max heat 102 109 102 87 105 109 99 88 106 109 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 98 75 95 72 86 68 87 Temp 81 76 95 93 80 77 93 90 77 72 83 81 72 69 83 83 Dewpt 70 67 71 73 69 68 71 73 72 71 73 71 70 68 71 71 PWind dir S SW SW W NE N E S Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW SC B1 SC SC FW SC SC PoP 12hr 5 0 0 5 30 20 10 10 Rain shwrs C S S S Tstms S S S $$ MOZ042-122100- Audrain MO- Including the city of Mexico 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 74 95 74 93 Temp 84 87 90 89 81 79 76 75 82 90 95 89 82 79 76 74 83 90 93 90 Dewpt 74 75 75 77 73 71 70 70 72 73 72 74 73 71 70 70 72 72 72 74 RH 72 68 62 68 77 77 82 84 72 58 48 61 74 77 82 87 70 56 51 60 Wind dir SW SW SW SW SE SE SE S SW SW S SE SE SE S SE S S S SE Wind spd 9 9 9 4 5 5 5 5 8 9 8 4 6 5 5 4 6 6 6 4 Wind gust 19 Clouds CL B1 SC SC SC SC SC B1 B1 SC FW FW FW SC SC SC SC SC FW FW PoP 12hr 20 30 20 20 0 QPF 12hr 0.01 0.04-0.62 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS IS S S S S S Tstms IS IS S S S S S Heat index 90 96101101 85 86 98105 98 87 88 97101 98 Max heat 99 105 100 101 107 95 99 105 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 94 75 91 70 84 66 84 Temp 80 76 91 91 79 76 89 87 75 71 81 80 70 67 81 82 Dewpt 71 68 73 74 68 68 73 74 72 71 72 71 68 67 71 71 PWind dir SE SW SW W N N E S Wind char LT GN LT GN LT LT LT LT Avg clouds FW FW FW FW CL FW FW SC SC SC B1 SC SC SC SC SC PoP 12hr 5 5 5 10 30 20 10 10 Rain shwrs C S S Tstms S S S $$ MOZ041-047-048-122100- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 78 98 78 98 Temp 86 91 94 91 84 81 79 78 86 93 98 93 85 82 80 78 87 94 98 93 Dewpt 72 73 73 75 72 71 70 70 72 72 71 72 72 71 69 69 70 69 70 72 RH 63 56 51 60 67 72 74 76 63 51 42 51 65 69 69 74 57 44 41 51 Wind dir SW SW SW S SE SE S S S SW SW S S S S S SW SW S SE Wind spd 6 6 6 4 4 4 4 4 6 8 8 3 4 4 4 4 5 5 5 3 Wind gust 18 17 17 14 17 16 14 Clouds CL SC SC SC FW SC SC SC B1 SC FW FW FW FW SC SC SC FW FW FW PoP 12hr 10 10 10 10 5 QPF 12hr 0 0.00-0.63 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS S Tstms IS S Heat index 93100104102 90 85 81 92101107100 91 86 81 91100105101 Max heat 103 110 103 87 104 109 99 88 106 110 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 99 77 96 73 87 69 89 Temp 82 78 95 93 81 78 93 90 78 73 83 82 73 70 84 85 Dewpt 70 67 71 72 69 68 72 73 72 72 73 71 70 69 71 71 PWind dir S SW SW W NE N E S Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW SC SC B1 SC SC FW SC SC PoP 12hr 5 0 5 5 30 20 10 10 Rain shwrs C S S S S Tstms C S S $$ ILZ095>097-MOZ018-019-026-027-034>036-122100- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 74 91 73 93 Temp 81 85 89 88 80 77 75 74 80 87 91 87 80 77 75 73 81 89 93 89 Dewpt 73 75 75 77 75 73 72 72 73 74 74 74 75 73 72 72 73 74 74 76 RH 77 72 64 70 85 87 90 93 79 65 58 65 85 87 90 97 77 61 54 66 Wind dir SW SW SW SE SE SE SE SE S SW SW E E E E E E SE SE E Wind spd 8 6 6 3 4 4 4 4 5 6 6 4 6 4 4 4 5 5 5 5 Wind gust 19 18 17 14 14 17 17 17 18 16 14 14 16 Clouds B1 B2 SC SC SC SC SC B1 B1 B1 SC FW SC B1 B1 B1 B1 SC SC SC PoP 12hr 40 40 20 50 5 QPF 12hr 0.00-0.31 0.00-0.85 0.00-0.06 0.00-0.15 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs SC SC IS S C S S C C C C Tstms SC SC IS S C S S C C C C Heat index 85 93 99101 83 82 95100 95 83 86 97103101 Max heat 99 108 103 90 101 106 99 88 105 109 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 95 75 91 69 83 66 85 Temp 79 76 92 91 79 76 89 86 74 70 81 80 70 68 82 82 Dewpt 73 70 75 75 70 69 74 75 72 70 72 71 68 67 71 71 PWind dir SE SW SW NW N NE E S Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW FW FW SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 10 10 10 20 20 10 10 Rain shwrs S S S S Tstms S S S $$ ILZ069-074-122100- Clinton IL-Washington IL- 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 76 93 77 97 Temp 86 91 91 89 81 79 78 76 83 90 93 87 83 81 79 77 87 94 97 91 Dewpt 76 77 77 78 75 74 72 72 75 75 74 75 75 74 72 72 74 75 75 77 RH 72 64 64 70 82 85 82 87 77 62 54 68 77 79 79 85 65 54 50 64 Wind dir SW SW SW E SE S S S SW SW S S S S SW SW SW W S SE Wind spd 4 4 4 3 5 4 4 3 4 5 5 4 6 5 4 2 3 2 2 2 Clouds CL SC SC B1 SC SC B1 B1 SC SC SC SC SC FW SC SC SC SC FW FW PoP 12hr 30 30 20 10 0 QPF 12hr 0.00-0.22 0.00-0.15 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs SC C S S C S Tstms SC C S S C S Heat index 96104104103 87 80 91100103 95 90 87 96106110105 Max heat 106 109 103 92 105 106 100 92 110 113 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 98 76 97 73 89 68 87 Temp 81 76 95 92 81 77 95 91 78 74 86 83 73 69 84 83 Dewpt 73 71 76 76 71 69 74 75 73 71 74 73 71 69 71 71 PWind dir SE SW S W N N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW CL FW FW FW SC B1 SC SC SC SC SC PoP 12hr 0 0 0 0 20 20 10 10 Rain shwrs S C S Tstms S S $$ ILZ070-122100- Marion IL- Including the cities of Centralia and Salem 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 75 92 77 95 Temp 86 89 90 87 80 78 77 75 83 89 92 85 82 80 78 77 86 92 95 89 Dewpt 76 76 75 76 74 73 72 72 75 75 74 76 74 73 72 72 74 74 75 76 RH 72 66 62 70 82 85 85 90 77 64 56 75 77 79 82 85 68 56 53 66 Wind dir SW SW W E SE S S S SW SW SW S S S SW SW NW NW SE E Wind spd 5 5 4 3 4 3 3 3 4 4 5 3 5 4 4 3 3 3 2 2 Wind gust 14 Clouds CL SC SC B2 SC SC B1 B1 B1 SC B1 SC SC SC SC SC SC SC SC FW PoP 12hr 40 30 30 10 0 QPF 12hr 0.04-0.35 0.09-0.22 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs SC C S S C C S S Tstms SC C S S C C S S Heat index 95101100 97 82 91100102 94 87 85 93102106101 Max heat 103 105 96 103 105 94 85 107 110 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 96 76 96 73 87 68 86 Temp 80 76 94 91 81 77 93 89 77 73 85 82 72 69 84 82 Dewpt 73 71 75 74 70 69 73 73 72 70 72 70 69 68 69 69 PWind dir SE SW S W N N NE E Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW CL FW FW FW SC B1 SC SC FW SC SC PoP 12hr 0 0 0 5 20 30 10 10 Rain shwrs S C S Tstms S S $$ MOZ074-084-085-099-122100- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 75 97 76 98 Temp 86 92 94 89 81 78 77 76 86 95 97 90 83 80 78 76 86 95 98 91 Dewpt 74 73 72 74 72 71 70 70 73 72 71 70 71 70 68 68 70 70 70 72 RH 68 54 49 61 74 79 79 82 65 48 43 52 67 72 71 76 59 45 41 54 Wind dir SW SW SW S SE S S S SW SW S S S S SW SW SW SW S S Wind spd 3 4 4 2 3 3 3 3 4 5 5 2 3 3 3 2 3 3 3 2 Wind gust 14 14 14 14 16 14 16 16 17 12 16 17 17 13 14 Clouds CL FW SC SC B1 FW B1 SC SC SC SC SC FW FW FW FW FW FW FW FW PoP 12hr 10 5 10 0 5 QPF 12hr 0.00-0.05 0.00-0.08 0.00-0.07 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 94101102 98 84 93104105 96 88 83 91101105 99 Max heat 105 109 99 84 110 110 98 85 109 111 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 98 76 99 74 91 69 89 Temp 80 75 96 93 80 77 96 93 79 75 89 85 73 70 86 84 Dewpt 69 67 69 70 67 67 68 69 68 69 72 72 70 69 71 72 PWind dir S SW SW W NW N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW CL CL FW FW FW CL FW SC SC SC SC FW SC SC PoP 12hr 0 0 0 5 10 30 10 20 Rain shwrs S C S S Tstms S C S S $$ MOZ051-060-122100- Montgomery MO-Warren MO- 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 74 96 74 96 Temp 85 89 93 90 81 79 76 75 81 90 96 89 83 80 77 75 84 92 96 91 Dewpt 74 75 75 77 74 72 71 70 72 73 73 74 73 72 71 70 72 72 73 75 RH 70 64 56 66 79 79 85 84 74 58 48 61 72 77 82 84 67 52 48 60 Wind dir W SW SW S SE SE S S S SW S S S S SW S SW SW S SE Wind spd 5 4 4 2 3 3 3 3 4 5 4 2 4 3 3 2 3 3 3 2 Wind gust 16 14 16 16 14 13 13 Clouds CL SC SC SC SC SC B1 SC SC SC FW SC FW FW SC SC SC FW FW FW PoP 12hr 10 30 10 10 0 QPF 12hr 0.01 0.00-0.67 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS IS S S S S S Tstms IS IS S S S S S Heat index 93100104104 87 80 85 99106 98 89 83 90100106103 Max heat 103 110 103 85 102 110 98 85 106 111 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 97 74 95 70 86 66 86 Temp 80 75 94 93 80 76 92 90 76 72 83 82 71 68 83 83 Dewpt 72 68 73 76 70 68 74 75 73 71 74 72 70 68 72 72 PWind dir S SW SW W N N E S Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW SC SC B1 SC SC SC SC SC PoP 12hr 5 0 0 5 20 30 10 10 Rain shwrs S C S S Tstms S S S $$ MOZ052-122100- Lincoln MO- 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 75 95 75 96 Temp 86 89 93 91 82 80 77 76 82 90 95 89 83 81 77 75 85 92 96 92 Dewpt 74 75 75 77 75 73 72 71 73 73 74 75 75 73 72 71 73 73 73 76 RH 68 64 56 64 79 79 85 85 74 58 51 64 77 77 85 87 67 54 48 60 Wind dir W SW SW S SE SE S S S SW S S SE S SW S S S S SE Wind spd 5 5 4 2 3 3 3 2 4 4 4 2 3 3 3 2 3 4 3 2 Wind gust 16 13 Clouds CL SC SC SC SC B1 B1 SC SC SC FW FW FW SC SC SC SC SC FW FW PoP 12hr 20 30 20 20 0 QPF 12hr 0 0.00-0.34 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS IS S C S S S Tstms IS IS S C S S S Heat index 95 99104105 89 82 87 99105 98 91 85 92101106105 Max heat 102 109 103 87 102 109 102 86 105 110 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 97 76 95 71 86 67 86 Temp 81 76 95 94 81 77 92 90 77 72 84 83 72 69 84 84 Dewpt 73 69 74 75 71 68 74 75 73 72 73 71 70 68 71 71 PWind dir SE SW SW W N N NE S Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW FW SC SC SC SC SC SC SC SC SC PoP 12hr 5 0 5 5 20 30 10 5 Rain shwrs S C S Tstms S S S $$ ILZ058-059-098-099-122100- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 73 90 73 94 Temp 86 88 89 88 80 78 75 74 80 88 90 84 81 79 76 74 84 91 94 90 Dewpt 75 74 75 76 74 73 72 72 74 74 74 75 74 73 72 72 73 74 74 76 RH 70 63 64 68 82 85 90 93 82 63 60 74 79 82 87 93 70 58 53 64 Wind dir SW SW SW E SE SE SE SE S SW S S SE SE SE SE E SE SE E Wind spd 6 6 5 4 4 4 4 4 5 5 6 4 5 4 4 3 4 4 4 4 Clouds FW B1 SC SC SC SC B1 B1 B1 SC SC SC SC SC B1 B1 SC SC SC FW PoP 12hr 30 40 20 20 5 QPF 12hr 0.00-0.29 0.00-0.15 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS SC S S C S C C Tstms IS SC S S C S C C Heat index 95 97 99100 82 82 96100 92 86 80 90101106102 Max heat 101 107 103 86 101 107 99 87 105 110 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 97 75 94 70 85 65 86 Temp 79 75 94 92 80 76 91 89 75 72 83 81 70 67 83 83 Dewpt 73 70 74 75 71 69 73 74 73 70 71 70 69 67 69 69 PWind dir SE SW S W N N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC PoP 12hr 5 5 5 5 20 20 10 10 Rain shwrs S S S Tstms S S $$ ILZ060-064-065-122100- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 73 89 74 93 Temp 85 88 88 87 79 77 75 74 81 87 89 83 81 78 76 74 84 90 93 89 Dewpt 75 76 76 77 74 73 72 72 74 74 74 76 75 73 72 72 74 75 75 76 RH 72 68 68 72 85 87 90 93 79 65 61 80 82 85 87 93 72 62 56 66 Wind dir SW SW SE E SE S SE SE S S S S SE S SE NW E E SE E Wind spd 5 5 5 3 4 3 3 3 4 5 5 4 5 4 4 2 4 3 3 3 Clouds CL B1 SC B1 SC SC B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 30 30 20 5 QPF 12hr 0.05-0.41 0.01-0.22 0.00-0.09 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS SC C S S C C S S S C C Tstms IS SC C S S C C S S S C C Heat index 93 98 99 98 80 84 95 97 91 86 90101105100 Max heat 103 106 102 92 99 102 99 92 106 110 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 95 75 94 71 85 66 85 Temp 78 75 92 90 80 76 92 88 76 72 83 81 71 67 83 82 Dewpt 73 71 76 76 71 69 74 75 73 70 72 70 69 67 69 70 PWind dir SE S S W N N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW FW SC SC SC SC SC FW SC PoP 12hr 0 5 5 5 30 20 10 10 Rain shwrs C S S Tstms S S $$ ILZ079-122100- Randolph IL- Including the cities of Chester and Sparta 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 75 95 77 98 Temp 87 92 94 90 82 80 77 76 84 90 95 88 84 82 79 77 88 95 98 93 Dewpt 76 75 76 78 75 73 72 71 74 74 72 74 75 73 71 70 73 72 73 76 RH 70 58 56 68 79 79 85 85 72 60 48 63 74 74 77 79 61 48 45 58 Wind dir SW SW SW S SE SE S S SW S S S S S SW SW SW SW SW SE Wind spd 4 4 4 4 6 5 5 4 4 5 5 4 8 6 5 3 3 3 2 2 Clouds CL SC SC B1 B1 SC B1 B1 B1 SC SC FW SC FW FW SC SC SC FW FW PoP 12hr 30 20 10 5 0 QPF 12hr 0.00-0.07 0.01-0.46 0.00-0.24 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs SC S S Tstms SC S S Heat index 97103106104 89 83 91100104 97 93 87 95105109106 Max heat 106 111 103 87 105 107 100 87 107 111 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 100 76 99 73 89 68 88 Temp 81 76 97 94 81 77 96 93 79 74 86 84 74 70 85 84 Dewpt 72 69 73 74 69 68 72 74 71 71 75 74 71 69 72 72 PWind dir S SW S W N N NE E Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 0 5 10 20 10 10 Rain shwrs S S Tstms S S $$ MOZ075-122100- Sainte Genevieve MO- 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 76 96 77 98 Temp 87 92 95 90 82 80 78 77 85 93 94 88 85 82 79 77 86 95 98 92 Dewpt 74 74 74 76 73 71 70 70 73 73 72 73 73 71 69 69 71 71 72 74 RH 65 56 51 64 74 74 76 79 67 52 49 61 67 69 72 76 61 46 43 56 Wind dir SW SW SW S SE S S S SW SW S S S S SW SW SW SW S SE Wind spd 5 4 5 4 6 5 6 5 5 6 6 4 8 8 6 4 4 3 3 3 Wind gust 17 Clouds CL FW SC SC B1 SC B1 B1 SC SC SC SC FW FW FW SC SC FW FW FW PoP 12hr 20 20 10 5 5 QPF 12hr 0.01-0.08 0.00-0.42 0.00-0.19 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS Tstms IS Heat index 95102106102 88 83 92102103 95 92 87 81 91103107102 Max heat 106 111 103 87 106 106 99 88 106 110 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 100 77 99 74 90 69 88 Temp 81 77 97 94 82 78 96 93 79 75 87 84 74 70 85 84 Dewpt 70 67 71 72 68 67 70 72 70 70 74 73 70 69 72 72 PWind dir S SW SW W NW N NE NE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW CL CL CL FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 0 5 10 20 10 10 Rain shwrs S S S Tstms S S S $$ MOZ059-062-122100- Gasconade MO-Franklin MO- Including the cities of Washington, Union, and Sullivan 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 75 97 76 98 Temp 87 92 95 91 82 80 78 76 83 92 97 91 84 82 78 76 87 95 98 93 Dewpt 74 74 73 76 73 71 70 70 72 73 72 73 72 70 69 69 71 71 71 74 RH 65 56 49 62 74 74 76 82 70 54 45 56 67 67 74 79 59 46 42 54 Wind dir SW SW SW S SE S S SW SW SW SW S S S SW SW SW SW S SE Wind spd 5 4 4 2 3 3 4 3 4 4 4 2 3 4 4 3 3 3 3 2 Wind gust 16 14 14 14 16 14 16 14 16 16 13 14 Clouds CL SC SC SC SC SC SC SC SC SC SC SC FW FW SC FW SC FW FW FW PoP 12hr 10 20 10 5 0 QPF 12hr 0.00-0.07 0.00-0.60 0.00-0.30 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS S Tstms IS S Heat index 95101105104 88 83 89101106 99 90 86 93103107103 Max heat 105 110 103 85 105 111 98 86 106 111 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 99 75 97 72 87 68 88 Temp 81 76 96 94 80 77 95 91 78 73 84 82 73 69 84 84 Dewpt 70 67 71 74 69 67 72 74 72 71 74 73 70 68 72 72 PWind dir S SW SW W N N E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW SC B1 SC SC FW SC SC PoP 12hr 0 0 0 0 20 20 20 10 Rain shwrs S S S S Tstms S S S S $$ MOZ072-073-122100- Crawford MO-Washington MO- 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 76 97 77 98 Temp 88 92 95 90 82 80 78 76 86 94 97 90 84 82 79 77 88 95 98 92 Dewpt 73 73 72 74 71 70 68 69 72 72 71 70 71 69 67 68 70 70 70 72 RH 61 54 48 60 69 72 71 79 63 49 43 52 65 65 67 74 55 45 41 52 Wind dir SW SW SW S SE S S S SW SW SW S S S SW SW SW SW SW S Wind spd 5 4 5 3 3 3 4 4 5 5 5 3 4 4 4 3 4 4 4 2 Wind gust 16 13 14 17 16 17 16 16 14 17 17 16 16 Clouds CL SC SC B1 B1 SC SC SC SC B1 SC SC FW FW FW FW FW FW FW FW PoP 12hr 10 10 10 0 0 QPF 12hr 0.00-0.14 0.00-0.13 0.00-0.52 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 96101103 99 86 82 92102105 96 89 85 80 93102105 99 Max heat 105 110 101 85 106 107 96 85 109 111 Heat Y Y Y Y Y Y Y Y Y Y Y Y Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 99 76 98 74 89 69 88 Temp 81 76 96 93 80 77 96 92 79 74 87 83 73 70 86 83 Dewpt 68 66 69 70 66 66 69 71 69 69 74 73 70 68 72 72 PWind dir S SW SW W NW N NE S Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW CL CL FW FW FW FW FW SC B1 SC SC FW SC SC PoP 12hr 0 0 0 5 10 20 10 10 Rain shwrs S S S Tstms S S S $$ ILZ102-MOZ065-122100- Monroe IL-Jefferson MO- 846 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 96 76 97 77 99 Temp 88 93 95 91 82 80 78 76 83 91 97 89 84 81 79 77 88 96 99 93 Dewpt 75 75 74 77 73 72 70 70 74 73 72 73 73 71 70 70 72 71 72 75 RH 66 56 51 64 74 77 76 82 74 56 45 59 70 72 74 79 59 45 42 56 Wind dir W SW SW S SE S S S SW SW S S S S SW W SW W S SE Wind spd 4 4 4 3 4 4 4 3 4 4 4 3 5 5 4 3 3 3 3 3 Wind gust 14 13 16 16 Clouds CL SC SC SC SC SC B1 B1 SC SC SC SC SC FW SC SC SC FW FW FW PoP 12hr 20 20 10 5 0 QPF 12hr 0.00-0.06 0.00-1.04 0.00-0.16 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs IS S Tstms IS S Heat index 98104107104 88 82 90100106 97 91 86 95104108104 Max heat 106 112 103 85 105 109 99 86 108 111 Extreme Heat W W W W W W W W W W W W Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 100 76 99 73 89 68 88 Temp 81 76 97 94 81 78 96 93 78 74 86 83 73 70 85 84 Dewpt 71 68 73 74 68 67 72 74 71 71 75 73 70 68 73 72 PWind dir S SW SW W N N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW SC B1 SC SC SC SC SC PoP 12hr 0 0 0 0 10 20 10 10 Rain shwrs S S S Tstms S S S $$