456
ASUS43 KLOT 280301
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 PM 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.
ILZ001-002-007-009-015-016-024-280400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 57 56 96 CALM 30.09R TC 14
STERLING* PTCLDY 59 51 75 E3 30.10R TC 15
SAVANNA* PTCLDY 58 56 92 CALM 30.10R TC 15
ILZ003-004-008-010-011-017-018-280400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 54 52 93 CALM 30.11S TC 12
FREEPORT* PTCLDY 54 53 95 CALM 30.12S TC 12
DE KALB* CLEAR 55 50 85 E3 30.11S TC 13
ILZ005-006-012>014-019>023-280400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 59 54 83 N6 30.09R TC 15
CHICAGO-MIDWAY PTCLDY 58 54 86 NW3 30.09S TC 14
AURORA CLEAR 55 50 83 NE3 30.09S TC 13
JOLIET* CLEAR 53 53 100 CALM 30.10S TC 12
WAUKEGAN PTCLDY 49 49 100 CALM 30.09S FOG TC 9
DUPAGE AIRPORT CLEAR 54 50 86 CALM 30.10S TC 12
WHEELING CLEAR 56 54 93 CALM 30.11R TC 13
LANSING* CLEAR 55 53 90 CALM 30.10R TC 13
NORTHERLY ISL* N/A 61 55 81 N5 N/A TC 16
LMZ740>746-280400-
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 65 310/ 4/ 6 1018.0R 1
WAUKEGAN HARBOR 62 64 300/ 4/ 6 1018.7R 1
WILMETTE BUOY 64 20/ 8/ 10 1020.8R 1/ 3
CHICAGO BUOY 65 64 360/ 8/ 10 1017.7F 1/ 3
HARRISON CRIB 64 360/ 9/ 9 N/A
NORTHERLY ISL 61 350/ 4/ 7 N/A
CALUMET HARBOR 62 340/ 5/ 6 1018.9S
MICHIGAN CITY 61 20/ 6/ 7 1017.7R
MICH CITY BUOY 62 63 20/ 6/ 8 N/A 1/ 3
ST. JOSEPH BUOY 56 58 330/ 2/ 2 1019.2R 1
ILZ025>027-034>036-040-047-049-050-058-095>099-280400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 61 55 81 N5 30.09R TC 16
GALESBURG* PTCLDY 58 56 94 N5 30.10R TC 14
MACOMB* MOCLDY 58 57 94 NW6 30.11R TC 15
ILZ028>032-037-038-041>044-048-051>054-059>061-280400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTCLDY 56 48 74 E8 30.10R TC 13
DECATUR PTCLDY 56 48 74 NE9 30.07R TC 13
PEORIA PTCLDY 58 52 80 CALM 30.08S TC 14
LACON* PTCLDY 53 50 88 CALM 30.08S TC 12
LINCOLN* PTCLDY 59 52 76 N3 30.07S TC 15
SPRINGFIELD PTCLDY 58 52 80 N5 30.06S TC 14
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-280400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 61 47 59 NE9 30.07R TC 16
MATTOON PTCLDY 58 48 69 CALM 30.05R TC 14
ILZ079-100>102-280400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 66 55 68 VRB3 30.05S TC 19
CAHOKIA* MOCLDY 62 59 90 CALM 30.04S TC 17
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-280400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* PTCLDY 60 55 83 CALM 30.02S TC 16
EFFINGHAM* PTCLDY 55 51 87 CALM 30.06S TC 13
MT. VERNON PTCLDY 51 51 100 CALM 30.04S TC 11
CENTRALIA* PTCLDY 53 49 88 E3 30.04S TC 12
SALEM* CLEAR 55 50 85 MISG 30.04S TC 13
ILZ067-068-072-073-078-083-087-091-280400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 58 50 75 CALM 30.03S TC 14
FLORA* PTCLDY 55 52 88 CALM 30.04S TC 13
FAIRFIELD* PTCLDY 56 47 73 CALM 30.03S TC 13
HARRISBURG* PTCLDY 54 50 86 CALM 30.03S TC 12
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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