Area Forecast Matrices
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
220 FOUS53 KLSX 161136 AFMLSX Area Forecast Matrices National Weather Service Saint Louis MO 635 AM CDT Sun Aug 16 2026 ILZ100-101-MOZ061-063-064-162100- 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 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 72 85 66 89 Temp 79 84 90 91 86 79 76 74 72 78 83 85 81 74 71 68 67 79 86 89 85 Dewpt 74 76 78 79 77 76 75 73 71 72 71 70 69 69 68 67 66 70 70 70 71 RH 85 77 68 68 75 91 97 97 97 82 67 61 67 84 90 97 97 74 59 54 63 Wind dir NW W W W N N N N N N N N N NE NE N N S SW S SE Wind spd 3 5 6 5 5 4 4 4 5 6 8 6 4 1 0 0 0 2 2 2 3 Wind gust 16 19 Clouds B2 B1 B1 SC SC SC B1 SC SC SC FW FW FW SC FW FW FW FW SC SC SC PoP 12hr 30 40 5 0 0 QPF 12hr 0.00-0.12 0.03-0.34 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S C S S Tstms C S S S C S S Heat index 81 92105108 98 81 87 89 85 80 91 95 91 Max heat 88 111 116 98 90 95 86 95 100 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 71 87 68 82 65 84 66 85 Temp 75 72 85 82 72 69 80 78 69 65 81 80 70 66 83 80 Dewpt 70 70 74 73 71 67 69 68 66 64 69 69 66 65 69 69 PWind dir SE NE NE E NE N N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B1 B1 SC B1 B1 B1 B1 SC SC SC SC SC SC FW PoP 12hr 50 40 50 30 30 10 5 5 Rain shwrs C C S C C C S C Tstms C S S C C S S $$ MOZ049-050-162100- Osage MO-Callaway MO- Including the city of Fulton 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 69 84 65 90 Temp 78 82 88 88 83 77 74 71 69 75 81 83 80 72 69 67 66 78 86 89 85 Dewpt 73 75 77 78 76 75 73 71 69 70 69 68 69 67 66 66 65 70 70 71 72 RH 85 79 70 72 80 94 97100100 84 67 61 69 84 90 97 97 76 59 56 65 Wind dir NW W W W N N N N N N N N N E E SE SE S SW SW E Wind spd 3 5 5 5 6 6 4 5 4 5 6 4 2 1 1 1 2 3 3 2 2 Wind gust 18 17 Clouds B2 B1 B1 SC SC SC B1 SC SC FW FW FW FW FW FW FW FW FW SC FW FW PoP 12hr 30 40 0 0 0 QPF 12hr 0.00-0.10 0.00-0.10 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S Tstms C C C C S S Heat index 88100101 91 83 86 82 91 95 91 Max heat 85 105 108 94 88 91 85 95 99 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 87 67 82 64 84 65 85 Temp 74 71 84 81 71 68 79 78 68 65 81 80 69 66 82 80 Dewpt 70 70 73 72 70 67 69 68 66 65 68 69 66 65 69 69 PWind dir E NE NE E E N N N Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC B1 SC B1 SC B1 B1 SC FW SC FW FW FW SC FW PoP 12hr 40 20 50 30 10 10 5 5 Rain shwrs S C S S C C S Tstms S C S S C C $$ MOZ042-162100- Audrain MO- Including the city of Mexico 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 86 66 81 63 85 Temp 75 79 84 85 81 74 71 68 66 73 78 81 79 70 67 65 65 77 82 85 83 Dewpt 73 75 77 77 75 74 71 68 66 68 68 67 69 66 65 64 64 69 70 71 72 RH 94 88 80 77 82100100100100 84 71 63 72 87 93 97 97 76 67 63 70 Wind dir SW W NW W N N N N N N N N N E SE S S S SW SW SE Wind spd 4 5 5 6 9 6 4 5 5 6 8 4 1 0 0 0 2 4 4 3 2 Wind gust 20 Clouds B2 B1 B1 B1 B1 SC B1 SC SC FW FW FW CL FW FW FW SC FW SC SC FW PoP 12hr 40 40 0 0 5 QPF 12hr 0.00-0.14 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C S S Tstms C C S C S S Heat index 82 94 96 87 83 87 90 89 Max heat 97 100 83 85 89 93 Heat Y Y Y Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 69 82 64 79 62 81 64 81 Temp 73 69 80 79 68 65 76 77 66 63 79 79 68 64 79 79 Dewpt 69 69 73 71 68 65 68 68 64 63 68 70 65 64 69 70 PWind dir E NE NE E E N N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B1 B1 B1 SC B1 SC SC FW SC SC FW FW SC FW PoP 12hr 60 30 40 20 20 10 5 5 Rain shwrs S L C C S S Tstms S C S C S $$ MOZ041-047-048-162100- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 69 85 66 91 Temp 77 82 88 88 83 77 74 71 69 75 81 83 81 73 70 68 67 79 86 90 86 Dewpt 74 75 77 78 76 75 73 71 69 69 68 69 69 68 67 66 66 70 71 71 72 RH 90 79 70 72 80 94 97100100 82 65 63 67 84 90 93 97 74 61 54 63 Wind dir SW W NW NW N N N N N N N N N E E SE SE S SW S E Wind spd 2 4 4 5 8 5 5 5 5 6 8 4 2 1 0 1 1 3 3 2 2 Wind gust 20 17 Clouds B2 B1 SC SC SC B1 B1 SC SC FW CL FW FW FW FW FW SC FW SC FW FW PoP 12hr 30 40 0 0 0 QPF 12hr 0.00-0.09 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S C S S Tstms C S S C S S Heat index 88 99101 91 83 87 84 92 97 93 Max heat 85 105 107 94 89 91 86 96 101 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 88 68 83 66 86 67 86 Temp 75 72 84 82 71 68 79 79 69 66 82 81 70 67 83 81 Dewpt 71 70 73 72 70 68 69 69 66 65 69 70 66 66 69 70 PWind dir E NE NE E NE N N N Wind char LT LT LT LT LT LT LT LT Avg clouds FW B1 B1 SC B1 SC B1 B1 SC FW SC FW FW FW SC FW PoP 12hr 40 20 40 30 10 5 5 5 Rain shwrs S C S S C C Tstms S C S S C C $$ ILZ095>097-MOZ018-019-026-027-034-162100- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO- Including the cities of Quincy, Mount Sterling, Pittsfield, and Hannibal 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 86 66 82 64 86 Temp 76 79 84 84 80 74 71 68 66 74 79 81 80 71 68 66 65 77 83 85 83 Dewpt 75 76 76 77 75 73 70 67 66 68 67 68 69 67 65 64 64 69 70 71 73 RH 97 91 77 80 85 97 97 97100 82 67 65 69 87 90 93 97 76 65 63 72 Wind dir SW W NW NW N N N NW N N N N N N S S S SW SW SW SE Wind spd 3 5 5 8 9 4 4 5 5 6 8 4 1 0 0 1 2 4 4 3 1 Wind gust 14 24 14 Clouds B2 B2 B1 B1 B1 SC SC SC FW SC FW FW FW FW FW FW FW SC SC SC SC PoP 12hr 40 20 0 0 5 QPF 12hr 0.01-0.21 0.00-0.06 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S C Tstms C C S S S C Heat index 82 93 94 84 80 84 82 87 91 89 Max heat 101 103 88 86 88 83 91 95 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 69 81 64 79 62 81 64 82 Temp 72 69 78 78 68 65 77 77 66 63 79 79 68 65 80 79 Dewpt 70 69 72 71 67 64 67 68 64 63 68 70 66 64 69 70 PWind dir NE NE NE E NE N N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B1 B1 SC B1 SC SC SC SC SC FW SC SC SC PoP 12hr 70 30 10 10 20 10 10 5 Rain shwrs C L C S S S S Tstms C S S S S $$ MOZ035-036-162100- Ralls MO-Pike MO- Including the city of Bowling Green 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 68 83 65 86 Temp 77 80 85 86 82 75 72 70 68 75 80 82 80 72 69 66 65 78 84 86 84 Dewpt 74 76 77 77 75 74 71 69 67 68 67 67 68 67 65 64 64 69 70 70 72 RH 90 88 77 75 79 97 97 97 97 79 65 61 67 84 87 93 97 74 63 59 67 Wind dir SW W W W N N N N N N N N N N N S S S SW SW S Wind spd 3 5 5 6 8 4 4 5 5 6 8 4 1 0 0 0 1 3 3 2 1 Wind gust 23 Clouds B2 B1 B1 SC B1 SC SC SC FW SC FW CL FW FW FW FW FW FW SC SC SC PoP 12hr 40 40 0 0 5 QPF 12hr 0.01-0.15 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C S S Tstms C C S C S S Heat index 86 96 97 89 82 84 83 88 92 90 Max heat 103 105 92 87 89 83 91 95 Heat Y Y Y Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 83 65 80 63 82 65 83 Temp 74 70 81 79 69 66 78 77 67 64 80 80 68 65 81 80 Dewpt 69 69 72 71 68 65 67 67 64 63 68 69 65 64 69 69 PWind dir E NE NE E E N N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B1 B1 SC B1 SC SC SC SC SC SC SC SC FW PoP 12hr 70 30 30 10 20 10 10 5 Rain shwrs S L C S S S S Tstms S S C S S S $$ ILZ069-070-074-162100- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 72 86 66 88 Temp 78 83 90 91 86 78 76 74 72 78 83 85 81 73 70 68 66 79 85 88 84 Dewpt 74 76 78 79 78 77 76 74 72 73 72 71 70 70 69 67 66 70 69 69 70 RH 88 80 68 68 77 97100100100 85 70 63 69 90 97 97100 74 59 54 63 Wind dir SE W W W N NW N NW NW N N N N N NE N N N SW SW SE Wind spd 3 5 6 5 3 3 5 4 4 5 8 5 3 1 0 0 0 0 0 0 0 Wind gust 17 18 Clouds B1 B1 B1 SC SC SC B1 SC SC B1 SC SC SC SC FW FW FW FW FW FW SC PoP 12hr 20 40 5 0 0 QPF 12hr 0 0.06-0.25 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C S Tstms S S S S C C S Heat index 92105109 98 88 90 85 89 92 88 Max heat 109 115 100 87 91 94 86 92 97 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 70 88 68 82 64 83 64 85 Temp 73 71 85 82 72 68 80 78 68 64 81 79 68 65 82 80 Dewpt 69 70 74 72 71 67 69 67 66 64 68 68 66 65 68 68 PWind dir S SW NE NE NE N N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B1 SC SC B1 B1 B1 SC SC SC SC FW SC FW PoP 12hr 40 50 50 30 20 10 5 5 Rain shwrs C C S C C C S S S S Tstms S S S C C S S S S $$ MOZ074-084-085-099-162100- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 71 87 66 91 Temp 77 87 95 96 86 79 76 74 72 78 84 86 81 73 70 68 67 79 88 91 85 Dewpt 71 73 73 74 76 75 75 73 72 74 74 74 72 71 69 68 67 70 71 72 73 RH 82 63 49 49 72 88 97 97100 88 72 68 74 93 97100100 74 57 54 67 Wind dir W W W SW SW NE N N N N N N N NE N NE NE S SW S SE Wind spd 3 6 5 6 4 3 4 4 4 5 6 3 2 1 0 0 0 0 1 1 1 Wind gust 17 Clouds SC SC SC SC SC B1 SC B1 B1 B1 SC FW FW SC FW FW FW FW FW FW SC PoP 12hr 20 30 20 0 5 QPF 12hr 0.00-0.15 0.02-0.47 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S S Tstms S C C C S S Heat index 94104107 96 80 91 95 86 80 94 98 92 Max heat 82 110 113 98 99 103 89 100 105 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 92 68 84 65 85 64 86 Temp 74 71 89 84 72 69 81 79 69 65 83 80 69 65 84 80 Dewpt 70 69 73 73 71 69 72 71 67 65 69 70 66 65 68 69 PWind dir S S NE NE NE NE N N Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC SC SC SC B1 B1 B1 SC SC SC FW SC FW FW FW PoP 12hr 20 20 50 40 30 20 10 5 Rain shwrs S S S S C C C C C S S S Tstms S S S S C C C C C S S S $$ MOZ051-060-162100- Montgomery MO-Warren MO- 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 68 83 63 88 Temp 77 81 87 88 83 76 73 70 68 75 81 83 79 71 68 66 64 77 85 88 84 Dewpt 74 76 78 79 76 75 73 70 68 70 69 69 69 67 66 65 64 70 71 72 73 RH 90 85 75 75 80 97100100100 84 67 63 72 87 93 97100 79 63 59 70 Wind dir W W W W N N N N N N N N N NE E SE S S SW SW SE Wind spd 4 5 6 5 6 8 4 5 5 5 8 3 1 0 0 0 0 2 1 1 1 Wind gust 19 19 Clouds B2 B1 B1 SC SC B1 SC SC SC SC FW FW FW FW FW FW FW FW SC SC SC PoP 12hr 40 40 0 0 0 QPF 12hr 0.00-0.10 0.02-0.16 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C C Tstms C C S C C Heat index 87100102 92 83 86 80 90 94 90 Max heat 83 106 111 92 88 91 94 98 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 69 85 65 81 62 83 63 84 Temp 73 69 82 80 70 66 78 76 67 63 80 78 68 64 81 78 Dewpt 70 69 74 72 69 66 70 68 65 63 69 70 66 64 70 69 PWind dir SE NE NE E E N N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B1 B1 SC B1 B1 SC FW SC SC SC SC SC FW PoP 12hr 50 30 40 30 20 10 5 5 Rain shwrs C C S C C S S Tstms C S S C S S $$ MOZ052-162100- Lincoln MO- 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 69 84 64 88 Temp 77 82 88 89 84 77 74 71 69 76 82 84 80 72 69 66 65 78 85 88 85 Dewpt 74 77 78 78 76 75 73 71 69 70 69 68 69 67 67 66 65 70 71 71 72 RH 90 85 72 70 77 94 97100100 82 65 59 69 84 93100100 76 63 57 65 Wind dir W W W W N N N N N N N N N NE N N S S SW SW SE Wind spd 4 5 6 5 6 6 5 5 5 6 8 3 1 0 0 0 0 2 2 1 1 Wind gust 19 Clouds B2 B1 B1 SC SC B1 SC SC SC FW FW CL FW FW FW FW FW FW SC SC SC PoP 12hr 40 40 0 0 0 QPF 12hr 0.00-0.08 0.03 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C C Tstms C C S C C Heat index 89101103 93 85 87 82 90 94 91 Max heat 105 109 94 88 90 83 92 96 Heat Y Y Y Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 85 66 81 63 83 65 84 Temp 74 70 83 80 70 67 79 77 67 64 81 79 68 65 82 80 Dewpt 70 70 74 72 69 66 69 68 65 64 69 69 66 64 69 69 PWind dir SE NE NE E E N N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B1 B1 B1 SC B1 SC SC SC SC SC SC SC SC FW PoP 12hr 60 30 40 20 20 10 5 5 Rain shwrs L C S C S S Tstms C S S C S $$ ILZ058-059-098-099-162100- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 68 84 63 87 Temp 78 82 87 88 84 76 73 70 68 76 82 83 80 71 68 65 64 78 84 87 84 Dewpt 74 76 77 77 76 75 73 70 68 69 68 67 68 67 66 65 64 68 68 69 70 RH 88 82 72 70 77 97100100100 79 63 59 67 87 93100100 71 59 55 63 Wind dir W W W W N N NW N N N N N N NE NE N S S SW SW SE Wind spd 4 5 8 5 6 5 4 5 5 6 8 5 3 1 0 0 0 3 3 3 2 Wind gust 14 16 18 Clouds B2 B1 B1 SC B1 B1 B1 SC SC SC FW FW FW SC FW FW FW FW FW SC SC PoP 12hr 50 40 0 0 0 QPF 12hr 0.01 0.01-0.08 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C S Tstms C C S S C S Heat index 88 99100 92 84 85 82 88 91 88 Max heat 85 105 108 94 88 90 83 92 96 Heat Y Y Y Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 69 84 64 81 61 82 63 84 Temp 73 70 82 80 69 66 79 77 66 62 80 79 68 64 82 79 Dewpt 69 69 72 70 68 65 66 66 64 62 66 67 65 64 67 67 PWind dir SE NE NE E E NE N N Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B1 SC SC B1 SC SC SC SC SC SC SC SC FW PoP 12hr 60 40 30 20 20 10 5 5 Rain shwrs S L C S C C S S S S Tstms S S S S C C S S S $$ ILZ060-064-065-162100- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 70 84 63 86 Temp 77 82 87 88 84 77 74 72 70 77 82 83 80 72 68 66 64 78 84 86 83 Dewpt 72 76 78 78 77 75 74 72 70 71 70 69 69 68 67 65 64 69 68 69 70 RH 85 82 75 72 80 94100100100 82 67 63 69 87 97 97100 74 59 57 65 Wind dir NW W W W NW NW NW NW NW N N N N N NE N N SW SW SW S Wind spd 3 5 8 5 4 3 5 5 5 5 8 6 3 1 0 0 0 1 2 2 1 Wind gust 14 19 18 Clouds B1 B2 B1 SC SC SC B1 SC SC SC SC SC FW SC FW FW FW FW FW FW FW PoP 12hr 50 40 5 0 0 QPF 12hr 0.01 0.02-0.20 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C S S S Tstms C C S S C S S S Heat index 88100102 94 86 86 81 87 90 87 Max heat 106 109 98 86 90 91 86 90 93 Heat Y Y Y Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 84 65 80 62 82 63 83 Temp 73 70 82 80 70 66 78 77 66 63 79 78 68 64 82 79 Dewpt 68 69 73 71 69 65 66 66 64 62 66 67 65 64 67 68 PWind dir S NW NE E NE N N NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B1 B1 SC SC B1 B1 SC SC SC SC SC SC SC FW PoP 12hr 50 50 40 20 20 10 10 5 Rain shwrs S C C S C C S S S Tstms S S S S C C S S $$ ILZ079-MOZ075-162100- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 71 85 66 89 Temp 78 85 92 94 87 80 76 74 72 77 82 85 81 74 71 68 67 78 86 89 84 Dewpt 73 76 78 79 79 77 76 74 72 74 75 74 72 70 69 67 67 70 71 72 73 RH 85 75 64 62 77 91100100100 90 79 70 74 87 93 97100 76 61 57 70 Wind dir SW NW W W NW NE N N N N N N N N N N E S S S SE Wind spd 3 5 5 6 4 3 4 4 4 6 8 5 3 2 1 0 0 1 1 1 2 Wind gust 16 14 Clouds SC B1 SC SC SC B1 B1 B1 SC B1 SC FW FW SC SC FW FW FW FW FW FW PoP 12hr 20 40 20 0 0 QPF 12hr 0.00-0.18 0.04-0.41 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C S Tstms S S C C C S Heat index 95108112101 83 89 93 85 92 97 90 Max heat 84 114 117 100 93 96 84 96 101 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 70 90 68 82 64 83 64 85 Temp 74 71 87 83 72 69 80 78 69 65 81 79 69 65 83 79 Dewpt 70 70 76 74 72 69 72 70 67 65 70 70 67 65 70 70 PWind dir SE S NE NE NE N NW N Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC SC SC SC B1 B1 B1 B1 SC SC SC FW SC SC FW PoP 12hr 30 30 50 40 30 10 5 5 Rain shwrs C C S C C C S S C S Tstms C S S C C C S S $$ MOZ059-062-072-073-162100- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 70 85 65 91 Temp 77 85 91 92 85 78 75 72 70 77 82 85 80 72 69 67 66 80 88 90 85 Dewpt 71 75 76 77 76 76 74 72 70 72 72 71 70 69 68 66 66 70 71 72 72 RH 82 72 62 62 75 94 97100100 85 72 63 72 90 97 97100 72 57 56 65 Wind dir W W W W N N N N N N N N N NE E SE SE S SW SW SE Wind spd 3 5 6 5 4 4 4 4 5 5 6 3 1 0 0 0 0 2 1 1 1 Wind gust 16 17 19 Clouds B1 B1 SC SC SC SC B1 B1 SC SC FW FW FW SC FW FW FW FW SC SC FW PoP 12hr 20 40 5 0 0 QPF 12hr 0.00-0.33 0.03-0.47 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C S Tstms S S C C C S Heat index 93104107 95 87 90 82 82 93 97 91 Max heat 83 109 113 96 94 96 96 101 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 90 67 82 64 85 64 85 Temp 74 71 87 82 72 68 80 77 68 65 82 79 69 65 83 79 Dewpt 70 69 74 72 71 68 71 69 66 65 69 69 66 64 69 69 PWind dir SE NE NE E E N N NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC B1 SC SC B1 B1 B1 SC SC SC SC SC SC FW FW PoP 12hr 30 20 50 40 20 10 5 5 Rain shwrs C S S C C C S S S Tstms S S S C C C S S $$ ILZ102-MOZ065-162100- Monroe IL-Jefferson MO- 635 AM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 71 86 65 90 Temp 78 85 92 93 87 79 76 73 71 78 83 85 81 73 70 68 66 79 87 90 85 Dewpt 72 77 79 79 78 77 75 73 71 74 73 73 71 69 68 67 66 71 72 73 73 RH 82 77 66 64 75 94 97100100 88 72 67 72 87 93 97100 77 61 58 67 Wind dir N W W W N NW N N N N N N N NE NE NE S S S S SE Wind spd 3 5 5 5 4 3 5 3 4 5 6 4 2 1 0 0 0 1 1 1 2 Wind gust 16 16 Clouds B1 B1 B1 SC B1 B1 B1 B1 SC SC FW FW FW SC FW FW FW FW SC SC SC PoP 12hr 20 40 10 0 0 QPF 12hr 0.00-0.15 0.06-0.35 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C S Tstms S S S C C S Heat index 95108111 99 80 89 92 85 81 94 98 91 Max heat 84 114 117 98 94 95 85 97 102 Extreme Heat W W W W W Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 70 89 68 82 64 84 64 85 Temp 74 71 86 83 72 68 80 77 68 65 81 79 69 65 83 79 Dewpt 70 70 76 74 71 68 72 70 66 65 71 70 66 65 71 70 PWind dir SE NE NE NE E N NW NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 SC B1 B1 B1 B1 B1 SC SC SC SC SC FW FW PoP 12hr 40 30 50 40 30 10 5 5 Rain shwrs C C S C C C S S C Tstms C S S C C C S S $$