431
ASUS43 KLOT 271001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM CDT SUN SEP 27 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.
ILZ001-002-007-009-015-016-024-271100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 58 53 84 E7 30.08S TC 14
STERLING* PTCLDY 49 49 100 E5 30.12R TC 9
SAVANNA* PTCLDY 51 49 95 CALM 30.11S TC 11
ILZ003-004-008-010-011-017-018-271100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 47 47 100 CALM 30.14R TC 8
FREEPORT* N/A 47 46 95 CALM 30.14S VSB 3/4 TC 9
DE KALB* FOG 47 47 100 CALM 30.13S VSB 1 TC 8
ILZ005-006-012>014-019>023-271100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 50 48 93 CALM 30.11R TC 10
CHICAGO-MIDWAY PTCLDY 51 50 96 CALM 30.11R TC 11
AURORA CLEAR 47 47 100 CALM 30.11S FOG TC 8
JOLIET* PTCLDY 48 48 100 CALM 30.11S FOG TC 9
WAUKEGAN CLEAR 45 45 100 CALM 30.11S FOG TC 7
DUPAGE AIRPORT CLEAR 46 45 96 N3 30.12R TC 8
WHEELING PTCLDY 48 48 100 CALM 30.13R TC 9
LANSING* PTCLDY 45 45 99 CALM 30.11S TC 7
NORTHERLY ISL* N/A 58 54 86 NE5 N/A TC 14
LMZ740>746-271100-
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 59 64 240/ 6/ 8 1018.4S 1/ 3
WAUKEGAN HARBOR 58 63 320/ 4/ 6 1019.2S 1/ 3
WILMETTE BUOY 63 80/ 10/ 14 1021.2S 2/ 3
CHICAGO BUOY 63 63 70/ 6/ 8 1018.2S 2/ 3
HARRISON CRIB 62 80/ 2/ 3 N/A
NORTHERLY ISL 59 50/ 5/ 6 N/A
CALUMET HARBOR 59 20/ 3/ 5 1019.5
MICHIGAN CITY 51 90/ 2/ 2 1019.1R
MICH CITY BUOY 58 62 90/ 4/ 6 N/A 1/ 3
ST. JOSEPH BUOY 52 53 20/ 4/ 4 1020.1R 1
ILZ025>027-034>036-040-047-049-050-058-095>099-271100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 58 54 86 CALM 30.07S TC 14
MACOMB* CLOUDY 57 57 100 CALM 30.10S TC 14
ILZ028>032-037-038-041>044-048-051>054-059>061-271100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTCLDY 49 49 100 NE8 30.10S TC 9
DECATUR PTCLDY 51 48 89 CALM 30.09R TC 11
PEORIA PTCLDY 54 50 86 E8 30.09R TC 12
SPRINGFIELD CLOUDY 60 51 72 E6 30.07R TC 16
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-271100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 52 47 83 E5 30.09R TC 11
MATTOON PTCLDY 51 47 86 CALM 30.07R TC 11
ILZ079-100>102-271100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAHOKIA* CLOUDY 59 58 96 CALM 30.05S TC 15
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-271100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
EFFINGHAM* MOCLDY 56 50 82 CALM 30.09R TC 13
MT. VERNON MOCLDY 59 55 87 N3 30.05R TC 15
CENTRALIA* MOCLDY 59 56 91 CALM 30.06R TC 15
SALEM* MOCLDY 64 53 69 MISG 30.05S TC 18
ILZ067-068-072-073-078-083-087-091-271100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 53 49 86 NE6 30.06R TC 12
FAIRFIELD* MOCLDY 61 51 70 NE3 30.05R TC 16
HARRISBURG* MOCLDY 58 55 91 CALM 30.04S TC 14
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