617
FOUS53 KLSX 170831
AFMLSX
AREA FORECAST MATRICES
NATIONAL WEATHER SERVICE SAINT LOUIS MO
331 AM CDT SUN MAY 17 2026
ILZ100-101-MOZ061-063-064-172100-
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
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 71 88 70 86
TEMP 68 70 78 85 89 87 79 76 73 72 80 83 86 85 78 76 73 71 79 82 81 78
DEWPT 63 63 66 65 64 63 62 62 64 66 69 70 70 67 67 67 66 66 69 70 69 66
RH 84 78 67 51 44 45 56 62 73 81 69 65 59 55 69 74 79 84 72 67 67 67
WIND DIR S S S S S S S S S S S S S S S S S S SW SW SW W
WIND SPD 5 9 13 17 17 14 13 12 12 13 16 17 16 14 12 12 13 12 14 13 10 8
WIND GUST 20 25 27 28 26 25 24 25 25 27 28 27 26 24 25 27 24 26 24
CLOUDS SC SC SC FW FW FW FW SC SC SC B1 B1 B2 B1 SC SC SC SC B2 B1 B1 B2
POP 12HR 0 10 60 20 90
QPF 12HR 0 0 0.07-0.23 0.01 0.19-0.80
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C L L S S S S L L D D L
TSTMS S C C S S S S C C C C
HEAT INDEX 87 90 88 82 87 90 88 80 86 85
MAX HEAT 90 94 88 90 95 88 90 90
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 58 71 52 73 55 76 59 82
TEMP 66 58 68 69 58 53 69 71 61 57 73 74 64 61 78 80
DEWPT 60 52 51 49 49 46 50 52 54 53 57 59 60 58 62 63
PWIND DIR NW N NE NE E E E SE
WIND CHAR LT GN LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B1 B1 B1 B1 SC B1 B2 B2 B2 B2 B2 B1 B1
POP 12HR 70 10 20 10 20 30 20 20
RAIN SHWRS L C S S S S C S S S S S
TSTMS C S S S
MOZ042-049-050-172100-
AUDRAIN MO-OSAGE MO-CALLAWAY MO-
INCLUDING THE CITIES OF MEXICO AND FULTON
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 88 69 87 67 79
TEMP 68 69 77 85 87 86 77 74 71 70 77 82 85 84 76 74 71 68 74 75 75 72
DEWPT 62 62 65 65 65 65 64 64 64 66 68 69 69 67 65 65 64 65 66 65 63 59
RH 81 78 67 51 48 50 64 71 79 87 74 65 59 57 69 74 79 90 76 71 66 64
WIND DIR SE S S S S S S S S S S S S S S S S S SW W NW NW
WIND SPD 6 10 14 17 17 14 13 13 13 13 16 17 17 16 14 14 14 12 13 11 10 8
WIND GUST 23 27 31 32 32 28 28 28 27 31 32 32 32 29 32 31 27 28 24 20 19
CLOUDS SC SC SC FW FW FW FW FW SC B1 B1 B2 SC SC FW SC B1 B2 B2 B2 B2 B2
POP 12HR 0 20 70 60 70
QPF 12HR 0 0.00-0.11 0.07-0.48 0.00-0.14 0.05-0.23
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C C C S S L L L L D D C
TSTMS S S C C C S S S C S S C C S
HEAT INDEX 87 89 88 85 88 87
MAX HEAT 89 93 89 88 94 88
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 53 68 49 71 53 75 56 81
TEMP 60 53 65 66 55 51 68 69 58 55 72 73 61 58 77 79
DEWPT 53 47 48 47 46 46 50 52 52 52 57 58 57 56 61 62
PWIND DIR N NE NE E E E SE SE
WIND CHAR LT GN LT GN LT LT LT LT
AVG CLOUDS B2 B2 B1 B1 B1 B1 SC B1 B1 B2 B2 B2 B1 B2 B1 B1
POP 12HR 30 10 10 10 20 30 20 20
RAIN SHWRS C S S S C S S S S
TSTMS S S S
MOZ041-047-048-172100-
BOONE MO-MONITEAU MO-COLE MO-
INCLUDING THE CITIES OF COLUMBIA AND JEFFERSON CITY
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 70 89 68 79
TEMP 68 70 78 85 88 88 79 75 72 71 78 83 86 85 78 75 71 68 73 74 75 72
DEWPT 62 62 65 65 65 65 64 64 64 66 68 69 69 67 66 64 64 65 65 64 61 57
RH 81 76 64 51 47 47 60 69 76 84 71 63 57 55 67 69 79 90 76 71 62 59
WIND DIR SE S S S S S S S S S S S S S S S S SW SW W NW NW
WIND SPD 8 10 13 14 16 13 12 12 12 11 13 14 14 14 12 13 12 10 10 9 9 8
WIND GUST 23 27 31 32 31 28 28 27 26 31 31 32 32 29 31 29 26 26 21 20 19
CLOUDS SC B1 SC FW SC SC FW SC B1 B1 B1 B1 B1 FW SC SC B1 B2 B2 B2 B2 B2
POP 12HR 0 20 70 60 70
QPF 12HR 0 0.00-0.10 0.06-0.49 0.00-0.17 0.07-0.17
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C C C S S L L L L C C C
TSTMS S S C C C S S S C S S C C
HEAT INDEX 87 90 90 87 90 88
MAX HEAT 89 94 89 90 94 89
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 53 70 51 73 54 77 58 83
TEMP 60 53 66 67 56 52 69 70 59 56 73 75 62 59 78 81
DEWPT 52 46 47 46 46 46 50 51 52 53 58 58 57 57 62 63
PWIND DIR N NE NE E E E E SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B1 B1 B1 B1 SC SC B1 B2 B2 B2 B2 B2 B1 B1
POP 12HR 30 10 5 10 20 30 20 20
RAIN SHWRS C S S S C S S S S
TSTMS S S S S S
ILZ095>097-MOZ018-019-026-027-034>036-172100-
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
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 88 69 85 67 78
TEMP 67 69 76 84 87 86 79 76 72 71 76 80 83 83 76 74 71 68 73 75 75 71
DEWPT 63 63 66 66 65 65 63 63 64 66 68 69 69 68 65 64 64 65 65 64 61 56
RH 87 81 71 55 48 50 58 64 76 84 76 69 63 61 69 71 79 90 76 69 62 59
WIND DIR SE S S S S S S S S S S S S S S S S SW SW W NW NW
WIND SPD 6 10 13 16 17 14 14 13 13 13 16 16 16 16 14 16 16 14 14 12 11 9
WIND GUST 23 28 32 34 33 31 29 29 28 32 32 33 32 32 32 32 29 28 25 23 21
CLOUDS B1 B1 B1 SC FW SC FW SC SC B1 B2 B2 SC SC SC B1 B2 B2 B2 B2 B2 B2
POP 12HR 5 40 70 70 50
QPF 12HR 0 0.00-0.17 0.26-0.65 0.01-0.45 0.01-0.27
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S D L C C S S L L C C C C S
TSTMS S S C C C S S C C S S C S
HEAT INDEX 87 89 87 82 87 86
MAX HEAT 90 93 87 88 91 86 84 84
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 52 67 49 70 52 75 56 81
TEMP 59 52 64 66 55 51 67 68 58 54 72 73 61 58 77 79
DEWPT 50 45 47 46 45 44 49 50 50 50 55 57 55 55 60 61
PWIND DIR N N NE E E E E SE
WIND CHAR LT GN LT GN LT LT LT LT
AVG CLOUDS B2 B1 SC B1 B1 B1 SC SC B1 B2 B2 B2 B1 B2 B1 B1
POP 12HR 10 5 5 5 20 20 10 20
RAIN SHWRS S S S C S S S
TSTMS S S S
ILZ069-070-074-172100-
CLINTON IL-MARION IL-WASHINGTON IL-
INCLUDING THE CITIES OF CENTRALIA AND SALEM
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 70 87 71 86
TEMP 68 70 77 84 86 84 77 73 72 71 80 83 84 83 78 75 73 72 79 83 82 78
DEWPT 65 64 66 65 64 62 58 58 61 65 69 69 69 67 66 66 66 68 69 70 70 67
RH 90 81 69 53 48 48 52 59 68 81 69 63 61 59 67 74 79 87 72 65 67 69
WIND DIR S S S S S S S S S S S S S S S S S S SW SW SW W
WIND SPD 6 10 13 17 17 13 13 12 13 14 19 19 17 13 13 13 14 16 18 17 12 8
WIND GUST 20 24 27 24 24 23 24 25 24 24 25
CLOUDS SC SC FW SC FW CL FW FW SC SC SC B1 B2 B1 SC SC SC SC B1 B1 B1 B1
POP 12HR 0 10 60 30 90
QPF 12HR 0 0 0.06-0.18 0.05 0.22-0.59
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C L L C C L L D D D
TSTMS S L L S S S C C C C
HEAT INDEX 85 87 85 81 86 88 85 81 87 86
MAX HEAT 88 91 86 90 92 87 89 89
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 60 71 52 72 55 75 60 80
TEMP 68 60 68 69 58 54 69 70 61 57 71 73 64 62 77 78
DEWPT 63 55 53 51 49 46 52 54 54 54 58 60 60 60 63 63
PWIND DIR NW N NE NE NE E NE E
WIND CHAR LT GN LT GN LT LT LT LT
AVG CLOUDS B2 B2 B2 B1 B1 B1 B1 SC B1 B2 B2 B2 B1 B2 B2 B1
POP 12HR 80 20 20 10 20 30 30 20
RAIN SHWRS D L S S S S S C C C C S S
TSTMS C S S S
MOZ074-084-085-099-172100-
SAINT FRANCOIS MO-IRON MO-MADISON MO-REYNOLDS MO-
INCLUDING THE CITY OF FARMINGTON
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 87 69 86
TEMP 68 69 77 85 88 86 78 74 71 70 78 82 85 84 78 75 71 70 79 83 83 78
DEWPT 62 62 64 63 63 63 64 65 66 67 69 69 68 67 67 66 66 66 68 70 71 68
RH 81 78 64 48 43 46 62 74 84 90 74 65 57 57 69 74 84 87 69 65 67 71
WIND DIR S S S S S S S S S S S S S S S S S S SW SW SW W
WIND SPD 5 8 11 11 11 10 9 9 10 10 11 11 11 11 9 10 10 9 10 9 8 4
WIND GUST 19 25 26 27 27 27 28 28 28 29 29 28 28 28 28 29 29 28 27 24 21 17
CLOUDS SC FW SC FW FW FW SC SC B1 B2 B1 B2 B1 SC SC SC SC B1 B1 B1 B1 B1
POP 12HR 0 10 40 20 80
QPF 12HR 0 0 0.01 0.00-0.11 0.07-0.24
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C C C S S C C D D D
TSTMS S S C C S S C C C C
HEAT INDEX 86 89 87 86 89 87 87 87
MAX HEAT 89 93 87 90 94 87 90 92
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 58 72 52 74 55 78 58 82
TEMP 66 58 70 69 58 54 71 72 61 57 74 75 63 60 79 79
DEWPT 64 56 52 49 49 49 50 53 54 55 58 59 59 59 61 63
PWIND DIR NW N NE NE NE E E SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B2 B2 B2 B1 B1 B1 B2 B2 B2 B1 B2 B2 B1
POP 12HR 80 30 20 20 30 40 30 30
RAIN SHWRS D L C C S S S S C C C C S S C
TSTMS C C S S
MOZ051-052-060-172100-
MONTGOMERY MO-LINCOLN MO-WARREN MO-
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 87 67 82
TEMP 68 69 77 85 88 87 78 75 71 70 77 81 84 85 76 75 71 68 75 78 77 74
DEWPT 63 63 66 66 66 65 64 64 65 66 69 70 70 67 66 66 64 66 68 68 66 62
RH 84 81 69 53 48 48 62 69 81 87 76 69 63 55 71 74 79 93 79 71 69 66
WIND DIR SE S S S S S S S S S S S S S S S S S SW SW W NW
WIND SPD 4 8 12 13 14 11 11 11 11 11 13 13 13 13 11 12 13 11 12 11 9 6
WIND GUST 20 26 28 29 26 27 26 26 26 28 29 28 28 27 28 29 26 27 24 20 18
CLOUDS SC SC SC FW FW FW SC SC SC B1 B2 B2 SC SC SC SC SC B1 B2 B2 B2 B2
POP 12HR 0 20 70 40 80
QPF 12HR 0 0 0.13-0.33 0.01 0.09-0.27
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C L L S S C C L L D D C
TSTMS C C C S S S C S C C C S
HEAT INDEX 87 90 88 85 88 88
MAX HEAT 89 94 89 88 92 88 85 85
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 53 68 49 71 52 75 56 81
TEMP 61 53 65 66 55 51 67 69 59 55 71 73 62 58 77 79
DEWPT 55 48 50 49 47 46 51 53 53 52 58 59 58 57 62 63
PWIND DIR N N NE NE E E E SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B1 B1 B1 B1 SC B1 B1 B2 B2 B2 B2 B2 B1 B1
POP 12HR 40 10 10 10 20 30 20 20
RAIN SHWRS C S S C S S S S S
TSTMS S S S
ILZ058-059-098-099-172100-
GREENE IL-MACOUPIN IL-CALHOUN IL-JERSEY IL-
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 67 85 67 83
TEMP 66 68 76 85 87 85 77 75 70 71 79 81 83 82 76 74 71 69 78 80 79 75
DEWPT 62 63 65 64 62 62 61 61 62 65 68 68 67 66 65 65 64 65 68 67 64 62
RH 87 84 69 50 43 46 58 62 76 81 69 65 59 58 69 74 79 87 71 65 60 64
WIND DIR SE S S S S S S S S S S S S S S S S S S SW W NW
WIND SPD 6 10 14 17 18 16 14 13 14 14 17 17 16 16 13 13 16 13 16 14 11 9
WIND GUST 20 25 27 31 27 28 26 27 27 29 28 27 27 26 26 28 26 28 27 21
CLOUDS SC SC SC SC FW FW FW SC SC SC B1 B2 B2 B1 SC SC SC B1 B2 B2 B2 B2
POP 12HR 0 10 70 40 90
QPF 12HR 0 0 0.15-0.42 0.01 0.23-0.80
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C L L S S C C L L D D C
TSTMS S C C S S S S S C C C S
HEAT INDEX 86 88 86 84 86 84 82
MAX HEAT 90 93 89 87 92 88 85 85
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 54 68 48 70 51 74 55 80
TEMP 63 54 65 66 56 50 68 69 59 55 71 73 62 59 77 78
DEWPT 55 48 47 47 45 43 48 50 51 50 54 57 57 56 59 61
PWIND DIR NW N NE NE E E E SE
WIND CHAR GN GN LT GN LT LT LT LT
AVG CLOUDS B2 B2 B1 B1 B1 B1 SC SC B1 B2 B2 B2 B2 B2 B1 B1
POP 12HR 50 10 10 5 10 20 20 20
RAIN SHWRS C S S S S S S S S S
TSTMS S S S
ILZ060-064-065-172100-
MONTGOMERY IL-BOND IL-FAYETTE IL-
INCLUDING THE CITIES OF LITCHFIELD AND VANDALIA
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 68 85 68 84
TEMP 66 68 76 83 85 84 75 73 70 70 79 81 83 81 75 74 71 69 78 81 80 76
DEWPT 63 63 66 65 63 62 58 57 60 63 68 68 68 66 65 65 65 66 68 68 67 65
RH 90 84 71 55 48 48 55 57 71 78 69 65 61 60 71 74 81 90 71 65 65 69
WIND DIR SE S S S S S S S S S S S S S S S S S S SW SW W
WIND SPD 6 10 14 18 18 14 14 13 13 14 19 18 17 14 13 13 16 16 18 17 12 8
WIND GUST 20 25 31 27 27 26 27 27 29 28 27 27 26 25 28 26 28 27
CLOUDS B1 SC SC SC FW FW CL SC SC SC B1 B1 B2 B1 SC SC SC SC B2 B1 B2 B2
POP 12HR 0 10 60 30 90
QPF 12HR 0 0 0.12-0.25 0.03 0.22-0.80
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C L L C C S S L L D D D
TSTMS S L L S S S S C C C C
HEAT INDEX 85 86 84 84 86 83 84 82
MAX HEAT 87 89 84 87 90 85 87 87
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 57 69 49 70 52 73 57 79
TEMP 65 57 66 67 56 51 67 68 59 55 70 72 62 59 76 77
DEWPT 60 51 51 49 46 43 50 52 52 51 56 58 58 57 61 62
PWIND DIR NW N NE NE E E E E
WIND CHAR GN GN LT GN LT LT LT LT
AVG CLOUDS B2 B2 B1 B1 B1 B2 SC SC B1 B2 B1 B2 B2 B2 B1 B1
POP 12HR 70 10 10 5 20 20 20 20
RAIN SHWRS D C S S S S S S S S S
TSTMS C S S S
ILZ079-MOZ075-172100-
RANDOLPH IL-SAINTE GENEVIEVE MO-
INCLUDING THE CITIES OF CHESTER AND SPARTA
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 88 70 87
TEMP 70 71 77 85 88 87 79 75 72 71 79 84 86 85 79 76 73 71 79 84 83 79
DEWPT 63 63 65 64 64 62 61 62 64 67 69 69 69 66 67 66 66 67 69 70 71 68
RH 78 76 67 50 45 43 54 64 76 87 72 61 57 53 67 71 79 87 72 63 67 69
WIND DIR S S S S S S S S S S S S S S S S S S S SW SW W
WIND SPD 6 10 12 14 16 13 13 12 12 13 16 16 14 14 12 13 14 13 13 13 10 8
WIND GUST 19 23 23 26 27 25 25 26 27 28 29 28 27 27 25 26 28 27 27 25 21 18
CLOUDS SC SC FW FW CL CL FW SC SC B1 B1 B1 B2 B1 SC SC SC SC B1 B1 B1 B1
POP 12HR 0 10 50 20 90
QPF 12HR 0 0 0.00-0.07 0.00-0.05 0.10-0.38
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C S S L L D D D
TSTMS C C C S S S C C C C
HEAT INDEX 87 89 87 80 88 90 88 80 80 89 88 81
MAX HEAT 90 93 88 91 94 89 92 92
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 59 72 52 73 55 77 59 81
TEMP 67 59 69 70 59 54 70 71 61 57 73 75 64 61 79 79
DEWPT 64 55 53 51 50 48 52 53 55 55 59 59 60 60 63 63
PWIND DIR NW N NE NE NE NE NE E
WIND CHAR LT GN LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B1 B1 B2 B1 SC B1 B2 B2 B2 B1 B2 B1 B1
POP 12HR 90 20 20 10 20 30 30 30
RAIN SHWRS D L S S S S S C C C S S C
TSTMS C C S S
MOZ059-062-072-073-172100-
GASCONADE MO-FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-
INCLUDING THE CITIES OF WASHINGTON, UNION, AND SULLIVAN
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 88 69 84
TEMP 69 70 77 85 89 87 79 76 72 71 79 83 86 85 78 76 73 70 78 80 80 75
DEWPT 62 62 65 64 64 64 64 65 66 66 69 69 69 67 66 66 65 66 68 69 69 65
RH 78 76 67 50 44 46 60 69 81 84 72 63 57 55 67 71 76 87 71 69 69 71
WIND DIR S S S S S S S S S S S S S S S S S S SW SW SW W
WIND SPD 4 8 12 12 13 11 10 10 11 11 13 13 13 12 10 11 11 10 11 9 8 4
WIND GUST 19 24 25 27 28 27 28 27 28 28 31 29 31 28 28 28 29 27 27 23 20 17
CLOUDS SC SC SC FW FW FW SC SC SC B1 B1 B2 B1 SC SC SC SC SC B2 B2 B2 B2
POP 12HR 0 10 50 20 90
QPF 12HR 0 0 0.00-0.17 0 0.16-0.26
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C S S L L D D L
TSTMS C C C S S C C C C
HEAT INDEX 86 90 88 86 90 87 82 82
MAX HEAT 90 94 88 90 93 87 90 90
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 55 70 51 73 54 77 57 82
TEMP 64 55 67 67 56 52 69 71 60 56 73 74 63 59 78 79
DEWPT 60 52 50 49 49 47 50 52 54 54 58 59 59 58 61 63
PWIND DIR NW N NE NE E E E SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1
POP 12HR 70 20 20 10 20 40 30 20
RAIN SHWRS L C S S S S S C C C S S
TSTMS C S S S S
ILZ102-MOZ065-172100-
MONROE IL-JEFFERSON MO-
331 AM CDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 70 88 70 87
TEMP 70 71 78 86 89 88 80 75 72 71 80 84 86 86 79 76 73 71 80 83 82 78
DEWPT 63 63 66 66 65 64 63 64 65 67 70 71 71 68 67 67 66 66 69 71 72 68
RH 78 76 67 51 45 45 56 69 79 87 72 65 61 55 67 74 79 84 69 67 72 71
WIND DIR S S S S S S S S S S S S S S S S S S SW SW SW W
WIND SPD 4 8 11 12 12 10 10 9 10 11 12 12 11 11 10 10 11 10 11 10 8 5
WIND GUST 16 20 23 26 27 24 23 23 24 24 26 27 26 25 24 24 25 24 24 21 18
CLOUDS SC SC SC FW FW FW SC B1 SC SC B1 B2 B1 SC FW SC SC SC B2 B2 B1 B2
POP 12HR 0 10 50 10 90
QPF 12HR 0 0 0.04-0.15 0 0.21-0.43
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C L L D D D
TSTMS C C C S C C C C
HEAT INDEX 88 91 89 80 82 89 92 89 80 82 88 87
MAX HEAT 91 94 88 92 95 88 92 93
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 57 71 51 73 54 77 58 82
TEMP 66 57 68 69 58 53 70 71 61 56 73 75 64 60 79 80
DEWPT 62 53 53 51 50 47 52 54 55 54 59 60 60 59 63 64
PWIND DIR NW N NE NE NE E E E
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1
POP 12HR 80 20 20 10 20 30 30 30
RAIN SHWRS D L S S S S C C C S S C
TSTMS C S S S
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