399
ASUS43 KLOT 302201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT WED SEP 30 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR S TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-302300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE LGT RAIN 67 64 90 S5 29.84S TC 19
STERLING* CLOUDY 65 65 100 VRB5 29.87R TC 18
SAVANNA* DRIZZLE 66 65 99 S7 29.84S TC 19
ILZ003-004-008-010-011-017-018-302300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD LGT RAIN 65 64 97 S9 29.86S FOG TC 18
FREEPORT* CLOUDY 65 64 95 SW10 29.86S TC 19
DE KALB* RAIN 64 64 100 S14 29.87S TC 18
ILZ005-006-012>014-019>023-302300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE LGT RAIN 65 63 93 S12G18 29.85F TC 18
CHICAGO-MIDWAY LGT RAIN 65 63 93 SW12 29.88S TC 18
AURORA LGT RAIN 65 64 97 S8 29.87S FOG TC 18
JOLIET* RAIN 64 64 100 S7 29.89S TC 18
WAUKEGAN CLOUDY 65 63 93 SW8 29.84S TC 18
DUPAGE AIRPORT LGT RAIN 64 63 96 S13 29.87S TC 18
KANKAKEE* LGT RAIN 65 64 96 S5 29.93R TC 18
WHEELING CLOUDY 66 63 90 SW12 29.87S TC 19
LANSING* RAIN 64 63 96 S9 29.91S TC 18
NORTHERLY ISL* N/A 64 61 90 S7 N/A TC 18
LMZ740>746-302300-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 66 64 160/ 12/ 16 1013.0R 2/ 4
WAUKEGAN HARBOR 65 64 200/ 10/ 12 1011.5F 1/ 4
WILMETTE BUOY 65 180/ 12/ 16 1013.0F 2/ 3
CHICAGO BUOY 65 64 210/ 10/ 14 1010.7F 1/ 3
HARRISON CRIB 65 190/ 20/ 21 N/A
NORTHERLY ISL 64 210/ 7/ 12 N/A
CALUMET HARBOR 65 190/ 6/ 9 1012.0F
MICHIGAN CITY 64 160/ 13/ 16 1011.4F
MICH CITY BUOY 64 63 190/ 12/ 16 N/A 1/ 2
ST. JOSEPH BUOY 63 61 180/ 16/ 17 1012.9F 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-302300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTSUNNY 79 64 60 E5 29.84S HX 81 TC 26
MACOMB* PTSUNNY 76 64 65 S6 29.88S TC 25
ILZ028>032-037-038-041>044-048-051>054-059>061-302300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTSUNNY 70 61 73 SE3 29.91S TC 21
DECATUR PTSUNNY 76 59 55 NE7 29.89S TC 24
PEORIA PTSUNNY 69 63 81 CALM 29.87F TC 21
LACON* PTSUNNY 66 63 87 S3 29.87S TC 19
SPRINGFIELD PTSUNNY 79 63 57 E5 29.86F HX 80 TC 26
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-302300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 74 59 59 E5 29.90F TC 23
MATTOON PTSUNNY 87 56 34 S7 29.89S HX 85 TC 31
ILZ079-100>102-302300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTSUNNY 90 59 35 SW6 29.86S HX 89 TC 32
CAHOKIA* PTSUNNY 92 59 33 S7 29.84F HX 91 TC 33
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-302300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
EFFINGHAM* MOSUNNY 85 55 34 SE6 29.91R HX 84 TC 30
MARION SUNNY 90 57 33 S9 29.91S HX 88 TC 32
MT. VERNON MOSUNNY 90 58 33 SW15 29.90S HX 89 TC 32
CENTRALIA* MOSUNNY 90 56 31 S9 29.89S HX 88 TC 32
SALEM* MOSUNNY 91 59 34 MISG 29.89S HX 90 TC 33
ILZ067-068-072-073-078-083-087-091-302300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 87 56 34 S14 29.91F HX 85 TC 31
FAIRFIELD* MOSUNNY 90 54 28 SW8 29.90F HX 88 TC 32
HARRISBURG* MOSUNNY 90 56 31 SW10 29.91F HX 88 TC 32
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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