457
FOUS53 KLSX 101421
AFMLSX
AREA FORECAST MATRICES
NATIONAL WEATHER SERVICE SAINT LOUIS MO
921 AM CDT MON AUG 10 2026
ILZ100-101-MOZ061-063-064-102100-
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
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 97 78 95
TEMP 82 91 94 91 84 81 80 78 88 94 97 93 84 82 80 78 86 92 95 90
DEWPT 73 73 74 75 73 71 70 70 74 76 75 75 72 71 70 71 75 76 76 76
RH 74 56 53 60 70 72 72 76 63 56 50 56 67 69 72 79 70 60 54 64
WIND DIR SW SW S S S SW SW SW SW SW SW SW SW SW SW SW SW SW W W
WIND SPD 4 8 6 4 6 6 6 5 8 8 6 4 5 5 5 5 8 6 5 3
CLOUDS B2 B1 SC FW FW SC SC FW FW FW FW FW FW SC SC SC SC SC SC SC
POP 12HR 20 5 5 20 20
QPF 12HR 0.00-0.08 0 0 0.00-0.07 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S S S S S C
TSTMS IS S S S S
HEAT INDEX 87101105103 90 86 81 97107109105 90 86 81 95105108102
MAX HEAT 105 109 103 90 111 114 105 88 110 112
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 91 73 88 73 91 73 90
TEMP 79 75 88 86 77 74 86 85 76 74 89 88 77 74 87 85
DEWPT 73 72 77 76 73 71 75 75 71 69 74 74 72 70 75 74
PWIND DIR S SE E E SE SW S W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC
POP 12HR 40 30 50 20 20 20 20 20
RAIN SHWRS C C C S C C S S S S S S S S S
TSTMS S C C S C S S S S S S S S S
MOZ049-050-102100-
OSAGE MO-CALLAWAY MO-
INCLUDING THE CITY OF FULTON
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 96 77 96
TEMP 81 91 94 90 82 81 79 77 85 93 95 91 83 80 78 77 85 92 95 90
DEWPT 71 74 72 75 71 70 69 69 73 74 73 75 71 70 70 70 74 74 73 75
RH 72 58 49 62 69 69 72 76 67 54 49 60 67 72 76 79 70 56 49 62
WIND DIR SW SW SW S SW SW SW SW SW SW SW SW S SW SW SW SW SW SW S
WIND SPD 8 8 8 4 5 6 6 6 8 8 8 3 4 5 5 5 8 6 5 3
WIND GUST 24 19 18 16 18 19 19 20 19 18 16 16 16 18 17
CLOUDS B2 SC SC FW FW FW SC SC SC FW CL SC FW SC SC SC SC SC SC SC
POP 12HR 20 0 0 5 5
QPF 12HR 0.00-0.08 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S
TSTMS IS S
HEAT INDEX 83100103100 87 84 80 92103104101 88 83 92102104101
MAX HEAT 102 107 102 87 107 110 101 86 106 109
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 92 73 90 73 91 72 88
TEMP 79 74 89 86 77 73 87 85 77 74 88 86 76 73 85 83
DEWPT 71 71 75 75 72 71 73 74 71 69 72 73 70 69 73 73
PWIND DIR S S E SE SE SW SW W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 30 20 50 20 20 20 20 10
RAIN SHWRS S C S S C C S S S S S S S S S
TSTMS S C S S C S S S S S S S S
MOZ042-102100-
AUDRAIN MO-
INCLUDING THE CITY OF MEXICO
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 76 93 76 91
TEMP 79 88 91 87 81 80 78 76 84 90 92 90 82 80 78 76 83 89 91 88
DEWPT 70 75 75 77 72 69 68 68 73 75 75 76 72 69 68 69 73 75 75 76
RH 74 66 60 72 74 69 71 76 70 62 58 64 72 69 71 79 72 64 60 68
WIND DIR SW SW SW SW S SW SW SW SW SW SW SW S SW SW SW SW SW SW S
WIND SPD 6 11 10 5 8 8 9 10 11 11 11 4 6 6 8 8 9 9 6 3
WIND GUST 21 18 20 20 23 21 17 19
CLOUDS OV B2 SC SC SC FW SC SC FW FW FW SC SC SC SC SC SC SC SC SC
POP 12HR 20 5 0 10 20
QPF 12HR 0.00-0.06 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S
TSTMS IS S S
HEAT INDEX 81 97102 99 86 82 90101103102 86 81 90 98101 99
MAX HEAT 98 102 99 84 103 106 99 83 101 103
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 86 70 85 70 87 70 84
TEMP 77 72 84 83 73 71 83 82 74 72 85 84 74 71 82 81
DEWPT 72 71 75 75 71 69 73 74 70 68 73 74 70 69 73 73
PWIND DIR SE SE E SE SE SW SW NW
WIND CHAR LT LT GN GN GN GN LT LT
AVG CLOUDS SC B1 B1 B1 SC B1 B2 B1 SC SC SC SC SC SC SC SC
POP 12HR 40 30 60 30 30 20 20 20
RAIN SHWRS C C S C L C S S C S S S S
TSTMS C S S C S S S S C S S S S
MOZ041-047-048-102100-
BOONE MO-MONITEAU MO-COLE MO-
INCLUDING THE CITIES OF COLUMBIA AND JEFFERSON CITY
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 97 78 97
TEMP 81 91 95 91 83 81 80 78 85 93 96 92 84 81 80 78 85 92 95 91
DEWPT 71 74 73 75 71 70 69 69 73 74 74 75 71 70 70 70 73 74 74 75
RH 72 58 49 60 67 69 69 74 67 54 49 58 65 69 72 76 67 56 51 60
WIND DIR SW SW SW SW S SW SW SW SW SW SW SW S SW SW SW SW SW SW S
WIND SPD 10 8 8 4 5 5 6 6 8 8 6 3 4 4 5 5 6 6 5 3
WIND GUST 24 20 19 16 18 20 20 21 20 19 14 16 16 17 18 17
CLOUDS B2 SC SC FW FW FW SC SC SC FW CL SC FW SC SC SC SC SC SC SC
POP 12HR 20 0 0 5 5
QPF 12HR 0.00-0.07 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS
TSTMS IS
HEAT INDEX 84100104102 88 85 82 92104107103 89 85 81 93103106102
MAX HEAT 103 107 102 87 109 111 102 86 107 111
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 93 74 91 74 92 73 88
TEMP 80 76 89 87 77 74 87 86 77 75 88 87 77 74 85 83
DEWPT 71 72 75 75 72 71 73 74 71 69 73 74 71 70 73 74
PWIND DIR S S E SE SE SW S NW
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 20 20 50 20 20 20 20 10
RAIN SHWRS S S C C S S S S S S S
TSTMS S S C S S S S S S S S
ILZ095>097-MOZ018-019-026-027-034>036-102100-
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
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 94 76 92
TEMP 81 89 91 89 81 79 78 77 84 90 93 91 82 79 77 76 82 88 91 87
DEWPT 71 73 75 77 74 71 69 69 74 76 76 76 73 71 70 70 74 76 76 76
RH 72 59 60 68 79 77 74 76 72 64 58 62 74 77 79 82 77 68 62 70
WIND DIR S SW SW SW S SW SW SW SW SW SW SW SW SW SW SW SW SW S SE
WIND SPD 5 9 8 4 4 5 8 8 9 10 9 4 4 4 5 5 6 6 5 2
WIND GUST 20 20 19 16 18 21 21 23 21 19 17 17 17 17 19 17
CLOUDS B2 B2 SC SC SC FW SC FW SC FW SC FW SC SC SC SC SC SC SC SC
POP 12HR 20 5 5 20 40
QPF 12HR 0.00-0.06 0.00-0.14 0 0.00-0.06 0.00-0.11
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S C C C C S
TSTMS IS S S S S C C S
HEAT INDEX 85 97101101 86 81 91102106104 87 81 89 99103 99
MAX HEAT 100 107 103 90 109 112 105 88 105 110
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 85 69 84 70 87 71 84
TEMP 76 72 82 81 72 70 81 81 73 71 84 84 74 71 82 80
DEWPT 73 72 76 75 71 69 74 74 70 69 75 75 71 69 74 74
PWIND DIR E SE NE E SE SW SW NW
WIND CHAR LT LT LT LT GN LT LT LT
AVG CLOUDS SC B1 B2 B1 B1 B2 B2 B1 SC B1 SC SC SC SC SC B1
POP 12HR 60 60 70 30 40 20 20 20
RAIN SHWRS S L L C L L C S S C S S S S S
TSTMS S C C C C C C S S C S S S S S
ILZ069-074-102100-
CLINTON IL-WASHINGTON IL-
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 97 77 95
TEMP 84 91 94 90 83 81 79 77 87 94 96 91 83 81 79 77 86 92 94 89
DEWPT 75 75 76 76 74 73 72 72 76 77 77 77 73 72 72 72 76 77 77 77
RH 74 60 56 64 74 77 79 85 70 58 55 64 72 74 79 85 72 62 58 68
WIND DIR SW SW SW S S S SW SW S SW SW S S SW SW SW SW SW SW SW
WIND SPD 8 8 6 4 8 8 6 5 8 8 6 4 6 6 5 4 6 5 4 3
CLOUDS SC B1 SC SC SC SC SC FW FW FW FW FW FW FW SC SC SC SC SC SC
POP 12HR 10 5 5 10 20
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S S S C
TSTMS IS S S C
HEAT INDEX 93103106102 89 85 97108111105 89 85 95106109101
MAX HEAT 106 109 102 93 110 116 103 90 109 112
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 91 73 88 72 91 73 90
TEMP 78 75 88 86 76 73 86 84 75 73 89 86 77 74 88 84
DEWPT 73 72 78 77 74 72 76 75 72 70 75 75 72 70 76 75
PWIND DIR SW S SE E SE S S W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B1 B1 B1 SC B1 B1 SC SC SC SC SC FW SC SC
POP 12HR 50 30 50 20 20 20 20 20
RAIN SHWRS C C C S C C S S S S S S S S S
TSTMS C S C S C S S S S S S S S S S
ILZ070-102100-
MARION IL-
INCLUDING THE CITIES OF CENTRALIA AND SALEM
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 95 77 93
TEMP 84 91 92 89 82 80 79 77 86 92 95 89 82 80 78 77 84 90 92 87
DEWPT 75 75 75 75 72 72 70 71 74 76 76 75 72 71 71 71 75 76 76 75
RH 74 60 58 64 72 77 74 82 68 60 54 64 72 74 79 82 74 64 60 68
WIND DIR SW SW SW S S SW SW SW SW SW SW SW SW SW SW SW W SW SW SW
WIND SPD 10 8 6 4 6 6 6 6 8 8 6 4 6 5 5 4 6 6 5 2
WIND GUST 17 16
CLOUDS SC B1 SC SC FW SC SC FW FW FW FW FW FW SC SC SC SC B1 SC SC
POP 12HR 10 10 20 10 20
QPF 12HR 0 0 0.00-0.25 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S S S S C
TSTMS IS S S S C
HEAT INDEX 93102104 99 86 83 94105108 99 87 83 92101105 96
MAX HEAT 105 106 98 85 109 113 98 84 106 109
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 89 72 86 71 89 72 88
TEMP 77 74 86 84 75 73 84 82 74 72 87 85 76 73 86 83
DEWPT 72 72 76 74 72 71 74 73 70 69 74 73 70 70 74 73
PWIND DIR SW S E E SE S S W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B1 B1 B1 B1 B1 B1 SC SC SC SC FW FW SC SC
POP 12HR 50 50 50 30 30 20 20 20
RAIN SHWRS C C C S C C C S S C S S S S S
TSTMS C S C S C S S S S S S S S S S
MOZ074-084-085-099-102100-
SAINT FRANCOIS MO-IRON MO-MADISON MO-REYNOLDS MO-
INCLUDING THE CITY OF FARMINGTON
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 96 76 95
TEMP 84 91 93 90 81 78 76 75 85 93 95 90 82 79 77 76 85 93 95 89
DEWPT 74 73 72 73 72 70 69 70 73 72 71 72 71 71 70 70 73 73 73 73
RH 72 56 51 58 74 76 79 84 67 51 46 56 69 77 79 82 67 52 49 59
WIND DIR S S S S S SW SW SW SW SW SW SW S SW SW SW SW SW SW SW
WIND SPD 3 4 5 3 4 4 4 3 4 5 5 3 4 3 3 3 4 4 4 2
WIND GUST 14 16 13 17 18 18 17 17 16 13 17 17 17 16 17 14 16 13
CLOUDS CL FW FW FW FW CL FW FW CL FW CL CL FW FW SC SC SC SC FW SC
POP 12HR 0 0 0 0 10
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S
TSTMS S S
HEAT INDEX 90100101 98 84 92102104 98 86 81 92102104 97
MAX HEAT 103 106 98 83 107 111 99 85 109 110
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 74 93 73 93 73 92
TEMP 79 75 92 88 78 74 90 87 77 74 91 88 77 74 90 87
DEWPT 70 70 73 74 71 70 72 73 70 68 71 71 69 68 71 72
PWIND DIR SW SW S SW S SW SW W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC SC SC SC SC FW FW FW SC FW FW FW SC SC
POP 12HR 10 10 20 10 20 10 10 20
RAIN SHWRS S S S S S S S S
TSTMS S S S S S S S
MOZ051-060-102100-
MONTGOMERY MO-WARREN MO-
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 76 96 75 94
TEMP 80 89 93 89 82 80 78 76 84 92 95 92 82 80 77 75 83 91 93 90
DEWPT 71 74 74 76 73 70 69 70 74 76 75 77 72 70 70 70 75 76 76 77
RH 74 61 54 66 74 72 74 82 72 60 53 62 72 72 79 84 77 62 58 66
WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW S SW SW SW SW SW SW SW
WIND SPD 4 6 6 2 4 5 5 5 6 6 5 2 3 4 4 4 5 5 3 1
WIND GUST 17 18 18 16 18 18 19 19 18 14 14 16 17 16
CLOUDS OV B1 SC SC FW FW FW SC SC FW FW SC SC SC SC SC SC SC SC SC
POP 12HR 20 0 0 5 20
QPF 12HR 0.01-0.08 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S S
TSTMS IS S S S
HEAT INDEX 82 98103100 87 83 92105107106 87 82 91104106103
MAX HEAT 103 107 103 86 110 113 103 85 109 112
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 73 90 70 88 71 90 71 88
TEMP 77 73 87 85 75 72 85 84 75 72 87 86 76 72 85 83
DEWPT 72 72 77 77 73 71 75 75 71 69 75 75 71 69 75 75
PWIND DIR S S E SE SE SW SW NW
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 30 20 50 20 20 20 20 10
RAIN SHWRS S C S S C C S S S S S S S S S
TSTMS S C S S C S S S S S S S S S
MOZ052-102100-
LINCOLN MO-
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 95 77 94
TEMP 80 90 93 90 83 81 79 77 86 93 95 93 83 81 79 77 85 91 93 90
DEWPT 71 74 74 76 73 71 70 70 75 76 75 77 73 71 70 70 75 77 76 77
RH 74 60 54 64 72 72 74 79 70 58 53 60 72 72 74 79 72 64 58 66
WIND DIR W SW SW SW S SW SW SW SW SW SW SW SW SW SW SW SW W SW SW
WIND SPD 4 6 5 2 4 4 5 5 6 6 6 2 3 4 4 4 5 5 4 1
WIND GUST 17 16 14 16 17 19 18 16 14 17
CLOUDS OV B2 SC SC SC SC FW SC SC FW FW SC SC SC SC SC SC SC SC SC
POP 12HR 20 5 5 20 30
QPF 12HR 0.04 0 0 0.01 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S C C S
TSTMS IS S S S S
HEAT INDEX 83 99103103 89 85 95106108107 90 85 93104107103
MAX HEAT 101 107 105 89 110 112 105 86 107 110
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 89 71 87 71 90 72 88
TEMP 78 74 86 85 75 72 84 84 75 73 87 87 76 73 86 84
DEWPT 73 72 77 77 73 70 75 75 71 69 75 75 72 70 75 74
PWIND DIR S SE E E SE SW SW NW
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B1 B1 B1 B1 B2 B1 SC SC SC SC SC SC SC SC
POP 12HR 50 30 50 20 20 20 20 10
RAIN SHWRS S C C S C C S S S S S S S S S
TSTMS S C C S C S S S S S S S S S S
ILZ058-059-098-099-102100-
GREENE IL-MACOUPIN IL-CALHOUN IL-JERSEY IL-
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 94 75 92
TEMP 80 89 92 88 81 79 78 76 85 91 94 90 81 79 77 75 84 89 91 87
DEWPT 72 74 74 76 73 71 70 70 74 76 76 76 73 71 70 70 74 76 76 76
RH 77 61 56 68 77 77 76 82 70 62 56 64 77 77 79 84 72 66 62 70
WIND DIR SW SW SW S S SW SW SW SW SW SW SW SW SW SW SW SW W SW NE
WIND SPD 6 8 6 3 4 5 6 6 9 9 8 4 4 5 5 5 6 6 5 3
WIND GUST 17
CLOUDS OV B2 B1 SC FW FW FW SC FW FW FW SC SC SC SC SC SC SC SC SC
POP 12HR 30 5 5 20 40
QPF 12HR 0.00-0.06 0 0 0.00-0.08 0.00-0.15
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS S S C C C C C
TSTMS IS S S C C S
HEAT INDEX 82 98102 99 86 81 93104107102 86 81 91100104 98
MAX HEAT 101 106 103 87 109 111 103 86 107 109
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 87 69 85 69 88 70 87
TEMP 76 73 84 83 73 71 83 82 73 71 86 85 75 72 84 83
DEWPT 73 72 76 75 72 70 74 73 70 68 74 74 71 69 74 73
PWIND DIR SE SE E E SE SW S W
WIND CHAR LT LT LT LT GN LT LT LT
AVG CLOUDS SC B1 B1 B1 B1 B1 B2 B1 SC SC SC SC SC SC SC SC
POP 12HR 50 40 60 30 30 20 20 20
RAIN SHWRS C L C S C L C S S C S S S S S
TSTMS S C C S C S S S S C S S S S
ILZ060-064-065-102100-
MONTGOMERY IL-BOND IL-FAYETTE IL-
INCLUDING THE CITIES OF LITCHFIELD AND VANDALIA
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 76 94 75 91
TEMP 81 88 91 87 81 79 78 76 84 91 93 89 81 79 77 75 83 88 90 86
DEWPT 74 75 75 77 73 71 70 70 75 77 77 77 73 71 70 71 75 77 77 76
RH 79 66 60 72 77 77 76 82 74 64 60 68 77 77 79 87 77 70 66 72
WIND DIR SW SW SW S S SW SW SW SW SW SW SW SW SW SW SW SW SW SW NW
WIND SPD 8 8 6 3 5 6 6 6 9 9 8 4 4 5 5 5 6 6 5 2
CLOUDS OV B2 B1 FW SC SC SC FW FW FW FW FW SC SC SC SC SC SC SC SC
POP 12HR 30 10 20 10 30
QPF 12HR 0.01 0 0.00-0.37 0 0.00-0.17
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS IS C S S C C C C C
TSTMS IS C S S C C C
HEAT INDEX 86 97102 99 85 80 92104108101 86 80 91100104 97
MAX HEAT 102 106 102 93 109 113 102 90 105 110
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 87 70 84 69 87 71 86
TEMP 76 73 84 82 73 71 82 81 73 71 85 84 75 72 84 82
DEWPT 73 72 77 75 72 70 74 73 70 68 74 75 71 69 75 73
PWIND DIR SE S E E SE S S W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC
POP 12HR 50 50 60 30 30 20 20 20
RAIN SHWRS C C L C L L C S S C S S S S S
TSTMS S C C C C S S S S S S S S S S
ILZ079-102100-
RANDOLPH IL-
INCLUDING THE CITIES OF CHESTER AND SPARTA
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 98 77 97
TEMP 84 93 95 92 83 81 78 76 87 95 98 93 84 81 79 77 86 93 96 91
DEWPT 75 75 74 76 74 72 71 71 75 75 74 75 73 72 71 71 75 76 75 76
RH 74 56 51 60 74 74 79 85 68 53 47 56 70 74 77 82 70 58 51 62
WIND DIR S S SW S S S SW SW SW SW SW S S SW SW SW SW SW SW S
WIND SPD 5 6 6 4 8 8 6 5 8 6 6 4 8 6 5 4 6 5 5 3
CLOUDS CL SC SC FW FW FW SC FW CL FW FW FW FW FW SC SC SC SC SC SC
POP 12HR 5 0 0 5 20
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S S C
TSTMS S S S S
HEAT INDEX 93104106104 90 85 97107110105 91 86 96106109102
MAX HEAT 105 109 102 87 111 114 103 87 111 113
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 73 91 72 94 73 92
TEMP 79 75 91 89 78 74 89 87 77 74 91 89 78 74 90 87
DEWPT 72 71 76 77 73 71 75 75 72 70 74 74 71 70 74 74
PWIND DIR SW S S E SE SW S W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC B1 SC SC SC SC SC FW FW SC FW SC FW SC SC
POP 12HR 30 20 40 20 20 20 20 20
RAIN SHWRS C S S S C C S S S S S S S S S
TSTMS S S S S S S S S S S S S S
MOZ075-102100-
SAINTE GENEVIEVE MO-
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 98 77 96
TEMP 85 93 95 91 83 81 78 77 86 95 98 93 84 81 79 77 85 93 96 90
DEWPT 74 73 73 74 72 71 70 70 73 74 72 73 72 71 70 70 74 75 74 74
RH 70 52 49 58 70 72 76 79 65 51 43 52 67 72 74 79 70 56 49 60
WIND DIR SW S SW S S SW SW SW SW SW SW S S SW SW SW SW SW SW SW
WIND SPD 4 6 6 4 8 8 8 6 8 6 6 4 8 8 8 6 6 5 5 4
WIND GUST 18 18 18
CLOUDS CL SC FW CL FW FW SC FW CL FW FW CL FW FW SC SC SC SC SC SC
POP 12HR 0 0 0 5 20
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S
TSTMS S S S
HEAT INDEX 93102104101 89 84 93105108102 90 85 80 93105107100
MAX HEAT 105 107 103 87 111 112 105 87 110 113
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 74 92 73 94 73 92
TEMP 80 76 91 89 78 75 90 87 77 74 91 89 78 75 90 87
DEWPT 71 70 75 76 72 70 74 74 70 68 72 72 70 68 72 73
PWIND DIR SW SW S SW S SW SW W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC SC SC SC SC SC FW FW SC FW FW SC SC SC
POP 12HR 10 20 30 20 20 10 10 20
RAIN SHWRS S S S S C C S S S S S S S
TSTMS S S S S S S S S S S
MOZ059-062-102100-
GASCONADE MO-FRANKLIN MO-
INCLUDING THE CITIES OF WASHINGTON, UNION, AND SULLIVAN
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 98 77 97
TEMP 83 92 95 91 82 81 79 77 86 94 97 93 83 81 79 77 86 93 96 91
DEWPT 72 73 72 74 71 70 69 69 74 74 72 74 71 70 69 70 74 75 74 75
RH 70 54 48 58 69 69 72 76 68 53 45 54 67 69 72 79 68 56 49 60
WIND DIR SW S SW SW SW SW SW SW SW SW SW SW S SW SW SW SW SW SW SW
WIND SPD 3 5 5 3 4 5 5 5 6 5 5 2 3 4 4 4 5 4 4 1
WIND GUST 19 16 16 17 18 17 17 13 16 16 14 17 14
CLOUDS SC SC FW FW FW FW SC FW SC FW CL FW FW SC SC SC SC SC SC SC
POP 12HR 10 0 0 5 10
QPF 12HR 0.01 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS
TSTMS
HEAT INDEX 88101104101 87 84 94105106104 88 84 94105107102
MAX HEAT 103 107 103 85 110 113 103 85 109 112
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 94 73 91 72 93 72 90
TEMP 79 74 90 87 77 73 88 86 77 74 90 88 77 73 88 85
DEWPT 71 71 76 76 72 70 74 75 71 69 73 74 70 69 74 74
PWIND DIR S S SE SE SE SW SW W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 20 20 40 20 20 20 20 10
RAIN SHWRS S S S C C S S S S S S S S S
TSTMS S S S C S S S S S S S
MOZ072-073-102100-
CRAWFORD MO-WASHINGTON MO-
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 96 77 96
TEMP 84 92 94 90 82 80 78 77 87 94 96 91 83 80 79 77 87 93 95 90
DEWPT 74 72 72 72 70 69 68 69 73 72 71 71 70 69 69 70 73 73 72 73
RH 72 52 49 56 67 69 71 76 63 49 45 52 65 69 72 79 63 52 48 58
WIND DIR SW S S S SW SW SW SW SW SW SW SW S SW SW SW SW SW SW SW
WIND SPD 3 5 6 3 4 5 5 5 6 5 5 3 4 4 4 4 6 5 5 3
WIND GUST 18 16 19 18 18 17 16 16 17 17 16 18 16 13
CLOUDS CL SC FW FW FW FW FW FW CL FW CL FW FW FW SC SC SC SC SC SC
POP 12HR 0 0 0 5 10
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S
TSTMS S S
HEAT INDEX 91100102 98 86 82 94102104 98 87 83 94103105 98
MAX HEAT 103 106 99 84 109 111 99 84 109 110
HEAT Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 94 74 92 73 93 73 91
TEMP 79 76 91 88 78 74 90 86 77 74 91 88 77 74 89 85
DEWPT 69 70 74 74 71 69 73 73 69 68 72 71 69 68 72 72
PWIND DIR SW SW S SW S SW SW W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC SC SC SC SC SC SC FW FW FW SC SC SC SC
POP 12HR 10 20 30 20 20 10 10 20
RAIN SHWRS S S C C S S S S S S S S
TSTMS S S S S S S S S S S
ILZ102-MOZ065-102100-
MONROE IL-JEFFERSON MO-
921 AM CDT MON AUG 10 2026
DATE MON 08/10/26 TUE 08/11/26 WED 08/12/26
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 77 99 77 97
TEMP 84 93 95 92 83 81 79 77 88 95 98 93 84 81 79 77 87 94 96 91
DEWPT 73 73 73 75 72 71 69 70 75 75 74 75 71 70 70 70 76 76 75 75
RH 70 52 49 58 70 72 72 79 66 53 47 56 65 69 74 79 70 56 51 60
WIND DIR W SW SW S S SW SW SW SW SW SW SW SW SW SW SW SW W SW SW
WIND SPD 2 5 5 3 5 6 5 4 5 5 4 3 5 5 5 4 5 4 4 3
WIND GUST 16 18 17 16 16 16 16 16 14 16
CLOUDS SC SC SC FW FW SC SC FW FW FW CL SC SC SC SC SC SC SC SC SC
POP 12HR 5 0 0 5 20
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S S C
TSTMS S S S S
HEAT INDEX 91103105103 88 84 98108110105 89 85 80 97107109102
MAX HEAT 106 109 103 86 113 114 103 86 112 113
EXTREME HEAT W W W W W W W W W W W W W W W W W W W W
DATE THU 08/13/26 FRI 08/14/26 SAT 08/15/26 SUN 08/16/26
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 73 91 72 93 73 92
TEMP 79 75 91 88 77 74 88 86 76 74 91 88 77 74 89 86
DEWPT 71 71 77 76 73 70 75 75 71 69 74 74 70 69 74 74
PWIND DIR SW S S SE SE SW SW W
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B1 SC SC B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 20 20 40 20 20 20 20 10
RAIN SHWRS C S S S C C S S S S S S S S
TSTMS S S S S S S S S S S S
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