787
ASUS43 KLOT 290801
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 AM CDT TUE SEP 29 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.
ILZ001-002-007-009-015-016-024-290900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 46 45 96 CALM 30.02S TC 8
STERLING* CLEAR 52 52 100 CALM 30.05S TC 11
SAVANNA* CLEAR 52 51 96 E3 30.04F TC 11
ILZ003-004-008-010-011-017-018-290900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLEAR 51 50 96 CALM 30.07R TC 11
FREEPORT* CLEAR 51 50 95 CALM 30.06F TC 11
DE KALB* CLEAR 52 51 98 S3 30.06S TC 11
ILZ005-006-012>014-019>023-290900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLEAR 56 54 93 CALM 30.03F TC 13
CHICAGO-MIDWAY CLEAR 58 57 97 CALM 30.04F TC 14
AURORA CLEAR 48 47 96 CALM 30.04F TC 9
JOLIET* CLEAR 51 51 100 CALM 30.05F FOG TC 10
WAUKEGAN FOG 52 52 100 W3 30.04F VSB 1 TC 11
DUPAGE AIRPORT CLEAR 52 49 89 CALM 30.05S TC 11
WHEELING CLEAR 54 53 97 CALM 30.06F TC 12
LANSING* CLEAR 51 51 100 CALM 30.05F TC 11
NORTHERLY ISL* N/A 60 58 92 E3 N/A TC 16
LMZ740>746-290900-
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 61 65 330/ 2/ 4 1016.4F 0
WAUKEGAN HARBOR 61 65 220/ 2/ 4 1017.1F 0
WILMETTE BUOY 64 110/ 6/ 6 1019.0F 0
CHICAGO BUOY 64 64 150/ 2/ 4 1016.5R 1
HARRISON CRIB 63 130/ 5/ 5 N/A
NORTHERLY ISL 60 CALM / 4 N/A
CALUMET HARBOR 59 CALM / 3 1017.6R
MICHIGAN CITY 57 150/ 2/ 2 1016.6R
MICH CITY BUOY 61 62 130/ 4/ 4 N/A 1
ST. JOSEPH BUOY 60 61 160/ 2/ 4 1018.2R 1
ILZ025>027-034>036-040-047-049-050-058-095>099-290900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 58 44 60 SE8 30.01F TC 14
GALESBURG* CLEAR 47 47 100 CALM 30.03F TC 8
MACOMB* CLEAR 46 46 100 E5 30.04F TC 8
ILZ028>032-037-038-041>044-048-051>054-059>061-290900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 55 49 80 SE3 30.06R TC 13
DECATUR CLEAR 51 46 83 CALM 30.04F TC 11
PEORIA CLEAR 54 51 90 CALM 30.03F TC 12
LACON* CLEAR 50 47 92 CALM 30.04S TC 10
SPRINGFIELD CLEAR 48 46 93 CALM 30.03F TC 9
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-290900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 50 48 93 E5 30.04S TC 10
MATTOON CLEAR 51 48 89 CALM 30.03S TC 11
ILZ079-100>102-290900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BELLEVILLE CLEAR 54 53 97 CALM 30.00F TC 12
CAHOKIA* CLEAR 51 50 96 CALM 30.01F TC 11
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-290900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 54 53 97 CALM 30.02F TC 12
EFFINGHAM* CLEAR 51 49 94 CALM 30.05S TC 10
MT. VERNON CLEAR 46 46 100 CALM 30.04S TC 8
CENTRALIA* CLEAR 49 46 89 CALM 30.03F TC 10
SALEM* CLEAR 53 50 89 MISG 30.03S TC 12
ILZ067-068-072-073-078-083-087-091-290900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 52 50 93 N3 30.03S TC 11
FLORA* CLEAR 52 50 93 CALM 30.03F TC 11
FAIRFIELD* CLEAR 53 48 82 CALM 30.03S TC 12
HARRISBURG* CLEAR 49 48 95 CALM 30.03S TC 10
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page