406
ASUS43 KLOT 302001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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.
ILZ001-002-007-009-015-016-024-302100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 66 64 93 SW5 29.83S TC 19
STERLING* CLOUDY 65 65 100 CALM 29.85F FOG TC 18
SAVANNA* DRIZZLE 65 65 98 S6 29.84S TC 18
ILZ003-004-008-010-011-017-018-302100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD LGT RAIN 64 63 96 S12 29.87F FOG TC 18
FREEPORT* CLOUDY 65 64 94 SW6 29.86F TC 19
DE KALB* CLOUDY 64 64 100 S12 29.88S TC 18
ILZ005-006-012>014-019>023-302100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE LGT RAIN 64 62 93 S10 29.86F TC 18
CHICAGO-MIDWAY LGT RAIN 64 62 93 S12G18 29.88F TC 18
AURORA LGT RAIN 63 63 100 S6 29.88F FOG TC 17
JOLIET* LGT RAIN 65 65 100 S12 29.90F TC 18
WAUKEGAN CLOUDY 64 62 93 SW13 29.85F TC 18
DUPAGE AIRPORT LGT RAIN 63 62 97 S14 29.87F TC 17
WHEELING CLOUDY 65 63 93 SW9 29.88F TC 18
LANSING* LGT RAIN 63 62 95 S8 29.91F TC 17
NORTHERLY ISL* N/A 63 60 90 SW8 N/A TC 17
LMZ740>746-302100-
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 65 65 170/ 14/ 17 1012.7R 2/ 4
WAUKEGAN HARBOR 65 64 210/ 14/ 17 1011.9F 2/ 4
WILMETTE BUOY 63 170/ 14/ 17 1013.5F 2/ 4
CHICAGO BUOY 64 64 210/ 10/ 16 1011.0F 2/ 3
HARRISON CRIB 64 200/ 14/ 15 N/A
NORTHERLY ISL 62 190/ 8/ 15 N/A
CALUMET HARBOR 63 190/ 8/ 11 1012.3F
MICHIGAN CITY 63 160/ 12/ 14 1011.9F
MICH CITY BUOY 63 63 180/ 14/ 17 N/A 1/ 2
ST. JOSEPH BUOY 63 61 180/ 16/ 19 1013.7F 2/ 2
ILZ025>027-034>036-040-047-049-050-058-095>099-302100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTSUNNY 78 61 55 E3 29.85F HX 80 TC 26
MACOMB* CLOUDY 71 67 87 SE7 29.88F TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-302100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON LGT RAIN 66 62 87 SE7 29.92F TC 19
DECATUR CLOUDY 84 59 42 NW6 29.89F HX 84 TC 29
PEORIA LGT RAIN 67 62 84 SE5 29.88F TC 19
SPRINGFIELD CLOUDY 78 60 53 NE8 29.88F TC 26
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-302100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 75 58 55 NE6 29.92F TC 24
MATTOON PTSUNNY 87 56 34 S8G22 29.90F HX 85 TC 31
ILZ079-100>102-302100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 91 59 33 S13 29.87F HX 90 TC 33
CAHOKIA* MOSUNNY 94 60 32 SW8 29.85F HX 94 TC 34
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-302100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
EFFINGHAM* MOSUNNY 90 53 29 S5 29.91F HX 87 TC 32
MT. VERNON MOSUNNY 92 58 31 SW12 29.91F HX 91 TC 33
CENTRALIA* MOSUNNY 92 55 27 S10G18 29.90F HX 90 TC 34
SALEM* MOSUNNY 94 58 30 MISG 29.90S HX 92 TC 34
ILZ067-068-072-073-078-083-087-091-302100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 88 55 32 S8G21 29.93F HX 86 TC 31
FAIRFIELD* SUNNY 91 52 26 SW13 29.92F HX 89 TC 33
HARRISBURG* MOSUNNY 91 56 31 SW10 29.93F HX 89 TC 33
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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