Area Forecast Matrices
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
475 FOUS53 KLSX 190151 AFMLSX Area Forecast Matrices National Weather Service Saint Louis MO 851 PM CDT Tue Aug 18 2026 ILZ100-101-MOZ061-063-064-190900- 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 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 80 67 83 65 Temp 76 73 71 70 72 78 79 76 72 70 68 67 74 80 83 79 72 70 67 65 Dewpt 69 68 68 69 71 73 74 73 71 70 68 67 71 71 71 70 70 68 66 65 RH 79 84 90 97 97 85 85 90 97100100100 90 74 67 74 93 93 97100 Wind dir SE SE S SW SE SE SE NE NE N N N NE NE NE NE NE NE E E Wind spd 2 3 3 4 6 5 5 5 5 4 5 5 4 4 4 3 2 1 0 0 Wind gust 13 Clouds FW FW B2 OV B2 B2 OV SC SC B1 B1 SC B1 SC SC FW FW FW FW SC PoP 12hr 70 80 20 10 0 QPF 12hr 0.05-0.36 0.10-0.53 0.00-0.24 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C D C C C S S Tstms S C D C C C S S Heat index 81 83 88 80 Max heat 86 85 89 88 91 83 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 67 86 65 83 65 85 68 87 Temp 83 82 71 67 83 81 70 66 80 78 69 65 82 82 72 68 84 83 Dewpt 71 71 68 67 70 70 67 64 66 67 65 63 69 70 68 66 72 73 PWind dir NW W NW N NE E SE SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW SC SC B1 SC SC SC SC SC SC SC PoP 12hr 0 20 20 0 5 30 20 20 10 Rain shwrs S S S S C S S Tstms S S S S S S $$ MOZ042-049-050-190900- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 80 65 82 64 Temp 75 72 69 68 72 78 80 78 71 69 66 65 72 79 82 79 71 68 66 64 Dewpt 69 68 68 68 71 72 73 72 71 69 66 65 70 70 70 69 69 67 66 64 RH 82 87 97100 97 82 79 82100100100100 93 74 67 72 93 97100100 Wind dir E E NE E E E E NE NE NE NE N NE NE NE E E E SE SE Wind spd 3 3 6 5 6 5 6 6 5 5 4 4 4 4 4 3 2 1 1 1 Wind gust 25 17 17 Clouds SC B1 OV OV B2 OV SC SC SC FW SC B1 B1 SC FW FW CL CL FW SC PoP 12hr 90 70 10 5 0 QPF 12hr 0.26-0.88 0.06-0.15 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D L C C S S Tstms C D L C C S S Heat index 83 81 86 Max heat 84 90 91 85 89 91 83 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 65 85 63 82 65 87 67 87 Temp 83 82 70 66 82 81 69 65 79 78 69 66 83 82 72 68 84 83 Dewpt 70 71 68 66 69 70 67 64 66 67 64 63 69 71 68 66 71 72 PWind dir SW W NW NE E E SE SE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW SC FW FW FW SC SC B1 SC SC SC SC SC SC SC PoP 12hr 0 20 20 5 10 30 20 20 10 Rain shwrs S S S C S S Tstms S S S S S S $$ MOZ041-047-048-190900- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 82 67 84 66 Temp 76 74 71 70 74 79 82 80 74 71 68 67 74 81 84 81 73 70 68 66 Dewpt 69 69 69 69 71 72 73 73 72 70 68 67 70 70 70 70 70 68 67 66 RH 79 84 93 97 90 79 74 79 93 97100100 87 69 63 69 90 93 97100 Wind dir E E NE E E E E NE NE NE NE NE NE NE NE NE E E SE SE Wind spd 3 4 8 6 6 5 6 6 6 5 4 5 3 4 3 2 2 1 1 1 Wind gust 24 19 Clouds SC B1 OV B2 B2 OV SC FW SC FW FW B1 B1 SC FW FW CL CL FW SC PoP 12hr 90 70 10 5 0 QPF 12hr 0.33-0.91 0.01-0.10 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D L C C S Tstms C D L C C S Heat index 81 87 82 84 89 84 Max heat 90 91 84 90 94 85 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 67 87 66 85 68 90 70 90 Temp 84 83 71 68 84 82 70 66 81 80 71 68 85 85 74 70 86 85 Dewpt 71 72 69 67 69 70 67 64 67 68 65 64 70 71 68 67 72 72 PWind dir SW W N NE E E SE SE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW SC FW FW FW SC SC B1 SC SC SC FW FW SC SC PoP 12hr 0 20 20 5 10 30 20 20 10 Rain shwrs S S S S S C S S Tstms S S S S S S S $$ ILZ095>097-MOZ018-019-026-027-034>036-190900- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 80 64 82 64 Temp 74 70 69 68 72 76 79 78 71 68 65 64 73 78 82 79 71 68 65 64 Dewpt 69 69 68 68 70 72 72 71 69 67 65 64 69 68 68 69 67 66 64 64 RH 84 97 97100 93 87 79 79 93 97100100 87 71 63 72 87 93 97100 Wind dir S S SW S E NE E NE NE NE N N E E E E E SE S S Wind spd 2 2 3 4 3 4 4 5 5 5 4 4 3 3 3 1 1 1 1 1 Wind gust 13 16 19 Clouds FW B1 OV B2 OV B2 B1 B1 B1 SC SC FW SC FW FW FW FW FW FW FW PoP 12hr 60 40 20 0 0 QPF 12hr 0.08-0.61 0.02-0.15 0.00-0.14 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S S S S Tstms S C C C S S S S Heat index 82 85 Max heat 86 86 88 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 65 83 62 80 64 83 66 85 Temp 81 81 70 66 80 80 68 64 77 77 68 64 79 80 70 67 81 82 Dewpt 71 72 67 66 69 70 65 62 66 67 63 63 69 71 67 65 72 73 PWind dir SW W NW N E SE SE SE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW SC FW FW FW SC SC B1 SC SC SC SC SC SC SC PoP 12hr 5 20 20 0 10 30 20 10 10 Rain shwrs S S S S S C S S Tstms S S S S S S S $$ ILZ069-070-074-190900- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 80 66 82 64 Temp 74 70 70 69 72 77 80 76 71 70 68 67 73 80 82 78 72 69 66 65 Dewpt 69 67 67 68 71 72 73 72 71 70 68 67 71 71 71 70 70 68 66 65 RH 84 90 90 97 97 85 79 87100100100100 93 74 69 76 93 97100100 Wind dir S S S W S SE S E NE N N N NE NE NE NE NE NE NE NE Wind spd 2 3 3 4 5 5 5 5 4 4 5 6 3 3 3 2 1 0 0 0 Wind gust 13 17 Clouds CL CL SC OV OV B2 B2 B1 B1 B2 SC SC B2 SC SC FW FW FW SC SC PoP 12hr 50 80 30 10 0 QPF 12hr 0.00-0.09 0.25-0.53 0.06-0.35 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L C C C S C S S S S S Tstms S L L C C C S C S S S Heat index 83 83 87 Max heat 85 89 87 90 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 65 85 63 82 63 84 66 86 Temp 82 81 70 66 82 80 69 65 80 78 67 64 81 80 71 67 83 82 Dewpt 70 71 68 66 70 69 67 65 65 66 64 63 68 69 67 66 71 72 PWind dir N W NW N N E SE SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC PoP 12hr 5 10 20 0 5 20 20 20 10 Rain shwrs S S S S S S S Tstms S S S $$ MOZ074-084-085-099-190900- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 86 66 84 64 Temp 76 72 70 69 75 83 85 78 72 70 68 66 73 80 84 78 72 70 67 65 Dewpt 68 67 67 68 71 73 74 75 72 70 68 66 72 73 74 73 72 70 67 65 RH 76 84 90 97 87 72 70 91100100100100 97 79 72 85100100100100 Wind dir SE SE SE NE SE SE S E NE N N N NE NE NE NE NE NE N N Wind spd 2 3 3 5 6 5 4 5 4 4 4 4 2 2 2 2 1 0 0 0 Wind gust 14 16 19 Clouds FW CL FW B2 B1 SC SC B1 B1 B1 B2 OV B2 SC SC FW FW FW SC SC PoP 12hr 40 60 40 20 5 QPF 12hr 0.01-0.16 0.03-0.59 0.22-0.77 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S S S C C S S Tstms S C C S S S S C C S S Heat index 88 94 83 91 Max heat 88 97 101 92 98 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 65 88 64 85 64 87 67 89 Temp 84 81 70 66 85 82 69 65 82 79 69 65 84 82 72 68 87 84 Dewpt 71 72 68 66 69 71 68 65 67 69 65 63 69 71 67 65 71 72 PWind dir N NW NW N NE E SE SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW FW SC SC SC SC FW FW SC FW PoP 12hr 5 5 10 5 5 20 20 20 20 Rain shwrs S S S S S S S Tstms S S S S S S $$ MOZ051-052-060-190900- Montgomery MO-Lincoln MO-Warren MO- 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 79 65 82 63 Temp 74 71 69 67 70 77 79 76 71 68 66 65 71 79 82 78 71 68 65 64 Dewpt 69 68 69 67 70 73 74 72 70 68 66 65 70 70 71 70 69 67 65 64 RH 84 90100100100 87 85 87 97100100100 97 74 69 76 93 97100100 Wind dir E E N SE SE E SE NE NE NE NE N NE NE NE E E E SE SE Wind spd 2 2 4 4 5 5 5 5 5 5 4 4 3 3 2 1 1 0 0 0 Wind gust 20 Clouds SC B1 OV B2 B2 OV B1 FW SC SC SC SC B1 SC FW FW FW FW FW SC PoP 12hr 90 80 20 5 0 QPF 12hr 0.26-0.78 0.08-0.19 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D C C S S Tstms C L D C C S S Heat index 81 86 Max heat 85 87 87 90 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 65 85 62 82 64 85 66 86 Temp 82 81 70 66 82 80 68 64 79 77 68 64 81 81 71 67 83 82 Dewpt 71 72 68 65 70 70 67 63 66 67 64 63 70 71 68 66 72 73 PWind dir SW W NW N E E SE SE N Wind char LT 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 SC SC PoP 12hr 0 20 20 0 10 30 20 20 10 Rain shwrs S S S C S S Tstms S S S S S S $$ ILZ058-059-098-099-190900- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 78 64 82 61 Temp 73 70 68 67 71 77 78 76 69 67 65 64 72 80 82 78 70 67 64 62 Dewpt 69 68 68 67 70 72 72 71 69 67 65 64 69 68 68 68 67 66 64 62 RH 87 93100100 97 85 82 85100100100100 90 67 63 71 90 97100100 Wind dir S SE SW SW S SE S NE NE N N N NE NE NE NE E E E SE Wind spd 2 2 3 4 5 5 5 4 5 5 5 5 4 4 4 2 2 1 0 0 Wind gust 16 Clouds FW SC OV B2 OV B2 B2 SC B1 B1 SC FW SC FW FW FW FW FW FW SC PoP 12hr 70 60 20 5 0 QPF 12hr 0.07-0.48 0.05-0.30 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L C C C S Tstms S L L C C C S Heat index 82 85 Max heat 85 88 89 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 64 84 61 81 62 83 65 86 Temp 82 81 70 65 82 80 68 63 79 77 67 63 80 81 70 66 83 82 Dewpt 68 69 67 65 68 68 65 62 64 64 63 62 67 68 66 64 69 71 PWind dir SW SW NW N NE E SE SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW SC B1 SC SC SC SC SC SC SC PoP 12hr 0 20 20 0 5 20 20 20 10 Rain shwrs S S S S S S S Tstms S S S S $$ ILZ060-064-065-190900- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 78 64 81 61 Temp 72 69 68 67 71 77 78 76 70 68 66 65 72 80 81 77 70 67 64 62 Dewpt 68 67 67 67 70 71 72 71 70 68 66 65 69 68 68 68 68 66 64 62 RH 87 93 97100 97 82 82 85100100100100 90 67 65 74 93 97100100 Wind dir S S S SW SW SW SW NE NE N N N NE NE NE NE NE NE NE NE Wind spd 2 3 3 4 5 4 5 4 4 4 5 6 3 3 3 2 1 0 0 0 Wind gust 13 16 17 Clouds CL FW B1 B2 B2 B2 OV B1 SC B2 SC FW B1 SC FW FW FW FW FW FW PoP 12hr 50 70 20 10 0 QPF 12hr 0.00-0.11 0.16-0.48 0.00-0.08 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C C S S Tstms C L C C C S S Heat index 81 84 Max heat 84 85 86 83 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 64 83 61 81 61 82 65 85 Temp 81 80 69 65 81 79 68 63 79 77 66 62 79 79 70 66 82 81 Dewpt 68 69 66 65 69 68 66 62 64 64 63 62 66 68 66 65 70 71 PWind dir W W NW N N E SE SE SW Wind char LT 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 SC SC PoP 12hr 5 20 20 0 5 20 20 20 10 Rain shwrs S S S S S S S Tstms S S S S $$ ILZ079-MOZ075-190900- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 83 66 83 64 Temp 76 72 70 68 72 79 83 77 72 70 67 66 72 79 83 78 73 70 67 65 Dewpt 69 67 67 68 71 73 75 74 72 70 67 66 72 74 74 73 72 70 67 65 RH 79 84 90100 97 82 77 90100100100100100 85 74 85 97100100100 Wind dir SE S S N SE SE S E NE N N N NE NE NE NE NE NE NE N Wind spd 2 3 3 4 6 6 5 6 4 4 4 5 3 3 3 2 2 1 0 0 Wind gust 14 16 19 Clouds FW CL SC OV OV B1 B2 OV B2 B1 B2 B2 B2 B1 SC FW FW FW SC SC PoP 12hr 60 80 30 20 5 QPF 12hr 0.01-0.17 0.31-0.73 0.19-0.44 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S D L C S S S C S S S Tstms S D L C S S S C S S S Heat index 81 90 80 89 Max heat 86 88 94 87 92 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 65 86 64 83 63 85 67 88 Temp 83 81 70 66 84 81 70 65 81 78 69 64 82 81 72 67 85 83 Dewpt 72 73 69 66 71 72 68 65 67 68 65 64 70 71 67 66 73 74 PWind dir N SW NW N NE E SE SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW FW SC SC SC SC SC FW SC SC SC PoP 12hr 5 5 10 0 5 30 20 20 20 Rain shwrs S S S C S S S Tstms S S S S S $$ MOZ059-062-072-073-190900- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 83 66 83 64 Temp 76 73 71 69 74 81 82 76 71 69 67 66 73 80 83 77 71 69 66 65 Dewpt 68 67 68 68 71 73 75 73 71 69 67 66 71 73 73 71 71 69 66 65 RH 76 81 90 97 90 77 79 90100100100100 93 79 72 82100100100100 Wind dir SE SE E NE SE SE E NE NE NE N N NE NE NE NE E E SE SE Wind spd 2 3 5 4 8 5 5 5 4 4 4 5 3 3 3 2 1 0 0 0 Wind gust 16 21 16 18 Clouds SC SC B1 OV B2 B1 B2 SC SC SC B1 B2 B2 SC FW FW FW FW FW SC PoP 12hr 80 80 20 10 0 QPF 12hr 0.12-0.75 0.06-0.57 0.00-0.44 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C D C S S S S S S S S Tstms S C D C S S S S S S S Heat index 85 88 84 89 Max heat 85 93 95 90 94 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 65 87 63 84 64 88 67 89 Temp 84 81 70 66 84 81 69 65 81 78 69 65 84 82 72 68 86 83 Dewpt 71 71 68 66 70 70 67 65 67 68 65 63 70 70 68 66 72 72 PWind dir N W NW NE E SE SE SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW SC SC B1 SC SC SC FW SC SC SC PoP 12hr 0 5 20 5 10 30 20 20 10 Rain shwrs S S S C S S S S Tstms S S S S S S $$ ILZ102-MOZ065-190900- Monroe IL-Jefferson MO- 851 PM CDT Tue Aug 18 2026 Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 82 66 83 64 Temp 76 73 71 69 74 80 81 76 72 69 67 66 74 80 83 78 72 69 66 65 Dewpt 69 68 68 69 72 74 75 74 72 69 67 66 72 73 74 72 71 69 66 65 RH 79 84 90100 93 82 82 94100100100100 93 79 74 82 97100100100 Wind dir SE S SE NE SE SE SE NE NE NE N N NE NE NE NE NE NE NE NE Wind spd 2 3 3 4 6 5 5 5 4 4 4 5 3 3 3 2 1 0 0 0 Wind gust 13 14 14 Clouds FW FW B2 OV B2 B2 B2 B2 B2 SC B1 B2 B2 SC SC FW FW FW SC SC PoP 12hr 80 90 20 10 5 QPF 12hr 0.03-0.27 0.15-0.70 0.02-0.36 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D C C S S S S S S S Tstms C D C C S S S S S S Heat index 83 88 84 89 Max heat 85 90 93 89 92 Date 08/21 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 65 86 64 83 64 86 67 88 Temp 84 82 70 66 84 81 69 65 81 78 68 65 83 82 72 67 85 83 Dewpt 73 72 68 66 71 71 68 65 68 68 65 63 71 71 67 66 74 73 PWind dir N W NW N NE E SE SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW SC SC B1 SC SC SC FW SC SC SC PoP 12hr 5 10 20 0 5 30 20 20 10 Rain shwrs S S S C S S S Tstms S S S S S $$