731
ASUS43 KLOT 271301
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 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.
ILZ001-002-007-009-015-016-024-271400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 56 52 86 E3 30.12R TC 13
STERLING* PTSUNNY 53 53 100 E5 30.14S TC 12
SAVANNA* PTSUNNY 53 52 95 NE3 30.14S TC 12
ILZ003-004-008-010-011-017-018-271400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 52 50 93 CALM 30.16S TC 11
FREEPORT* MOSUNNY 50 48 95 CALM 30.16S TC 10
DE KALB* FOG 50 50 100 CALM 30.16R VSB<1/4 TC 10
ILZ005-006-012>014-019>023-271400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE FOG 53 52 96 CALM 30.13S VSB 1/4 TC 12
CHICAGO-MIDWAY PTSUNNY 54 52 93 CALM 30.13S TC 12
AURORA MOSUNNY 52 52 100 CALM 30.14S FOG TC 11
JOLIET* MOSUNNY 53 53 100 CALM 30.14S TC 12
WAUKEGAN MOSUNNY 52 52 100 CALM 30.14R TC 11
DUPAGE AIRPORT FOG 49 49 100 N5 30.14S VSB 1/8 TC 9
WHEELING CLOUDY 52 50 93 NW3 30.15R TC 11
LANSING* FOG 48 48 100 CALM 30.14S VSB<1/4 TC 9
NORTHERLY ISL* N/A 61 55 81 W1 N/A TC 16
LMZ740>746-271400-
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 57 64 260/ 6/ 8 1019.1R 1/ 3
WAUKEGAN HARBOR 57 63 300/ 6/ 8 1019.9R 1/ 3
WILMETTE BUOY 64 80/ 4/ 6 1022.1R 1/ 3
CHICAGO BUOY 65 63 360/ 2/ 4 1019.1R 1/ 3
HARRISON CRIB 63 350/ 1/ 2 N/A
NORTHERLY ISL 59 CALM / 2 N/A
CALUMET HARBOR 56 210/ 1/ 1 1020.4
MICHIGAN CITY 52 130/ 2/ 2 1019.7R
MICH CITY BUOY 58 62 90/ 2/ 4 N/A 1/ 3
ST. JOSEPH BUOY 52 53 70/ 2/ 4 1020.9R 1
ILZ025>027-034>036-040-047-049-050-058-095>099-271400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY LGT RAIN 58 56 93 CALM 30.12S TC 14
MACOMB* CLOUDY 59 59 100 CALM 30.14R TC 15
ILZ028>032-037-038-041>044-048-051>054-059>061-271400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOSUNNY 52 51 97 NE6 30.14R TC 11
DECATUR N/A 53 49 86 CALM 30.12R TC 12
PEORIA PTSUNNY 54 51 90 E5 30.12R TC 12
SPRINGFIELD CLOUDY 62 52 69 E5 30.11R TC 17
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-271400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 53 47 79 E5 30.13R TC 12
MATTOON SUNNY 52 49 89 NE3 30.11R TC 11
ILZ079-100>102-271400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAHOKIA* CLOUDY 61 59 93 CALM 30.10R TC 16
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-271400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 57 55 94 CALM 30.08R TC 14
EFFINGHAM* MOSUNNY 55 51 85 CALM 30.12R TC 13
MARION PTSUNNY 57 54 88 CALM 30.08R TC 14
MT. VERNON CLOUDY 62 53 72 NE6 30.09R TC 17
CENTRALIA* PTSUNNY 60 56 85 CALM 30.10R TC 16
SALEM* PTSUNNY 63 53 67 MISG 30.10R TC 17
ILZ067-068-072-073-078-083-087-091-271400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 56 51 84 N3 30.10R TC 13
FAIRFIELD* MOSUNNY 60 50 68 NE3 30.09R TC 16
HARRISBURG* PTSUNNY 62 54 74 CALM 30.08S TC 17
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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