084
ASUS43 KLOT 271201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 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.
ILZ001-002-007-009-015-016-024-271300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 56 52 86 E6 30.11R TC 13
6HR MIN TEMP: 56; 6HR MAX TEMP: 61;
STERLING* MOCLDY 50 50 100 E3 30.14R TC 10
SAVANNA* MOCLDY 51 49 96 NE3 30.13S TC 10
ILZ003-004-008-010-011-017-018-271300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 47 46 97 CALM 30.16R TC 8
6HR MIN TEMP: 46; 6HR MAX TEMP: 53;
FREEPORT* MOCLDY 47 46 95 CALM 30.16R TC 8
DE KALB* FOG 46 46 100 CALM 30.15R VSB<1/4 TC 8
ILZ005-006-012>014-019>023-271300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE FOG 50 48 93 W3 30.12R VSB 1/2 TC 10
6HR MIN TEMP: 49; 6HR MAX TEMP: 54;
CHICAGO-MIDWAY MOCLDY 50 49 96 CALM 30.13R TC 10
6HR MIN TEMP: 49; 6HR MAX TEMP: 57;
AURORA FOG 46 46 100 CALM 30.13R VSB 1/4 TC 8
6HR MIN TEMP: 46; 6HR MAX TEMP: 50;
JOLIET* PTCLDY 47 47 100 CALM 30.14R TC 9
WAUKEGAN FOG 46 46 100 CALM 30.13R VSB 1/4 TC 8
6HR MIN TEMP: 44; 6HR MAX TEMP: 49;
DUPAGE AIRPORT FOG 47 45 93 N3 30.14R VSB 1/2 TC 8
6HR MIN TEMP: 45; 6HR MAX TEMP: 51;
WHEELING CLOUDY 48 48 100 CALM 30.14R TC 9
6HR MIN TEMP: 47; 6HR MAX TEMP: 50;
ROMEOVILLE* CLEAR 52 52 100 N3 30.13R FOG TC 11
LANSING* FOG 44 44 100 CALM 30.13S VSB<1/4 TC 7
NORTHERLY ISL* N/A 57 54 89 NW1 N/A TC 14
LMZ740>746-271300-
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 1018.7R 1/ 3
WAUKEGAN HARBOR 56 63 300/ 6/ 8 1019.5R 1/ 3
WILMETTE BUOY 63 80/ 6/ 8 1021.5R 1/ 3
CHICAGO BUOY 62 63 60/ 2/ 8 1018.5S 1/ 4
NORTHERLY ISL 58 CALM / 5 N/A
CALUMET HARBOR 55 CALM / 1 1019.9
MICH CITY BUOY 57 62 80/ 6/ 8 N/A 1/ 3
ST. JOSEPH BUOY 52 53 50/ 4/ 4 1020.5R 1/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-271300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 58 54 86 W3 30.12R TC 14
MACOMB* CLOUDY 57 57 100 N3 30.12S TC 14
ILZ028>032-037-038-041>044-048-051>054-059>061-271300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTCLDY 49 49 100 E7 30.13R TC 9
DECATUR PTCLDY 48 46 93 E3 30.11R TC 9
PEORIA MOCLDY 53 50 89 NE5 30.11R TC 12
6HR MIN TEMP: 53; 6HR MAX TEMP: 61;
SPRINGFIELD CLOUDY 59 52 77 E5 30.09R TC 15
6HR MIN TEMP: 59; 6HR MAX TEMP: 61;
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-271300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 51 46 83 NE3 30.11R TC 11
MATTOON PTCLDY 47 45 93 N5 30.10R TC 8
ILZ079-100>102-271300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOCLDY 59 55 88 CALM 30.09R TC 15
CAHOKIA* CLOUDY 60 58 92 W5 30.09R TC 16
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-271300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 55 54 94 CALM 30.06 TC 13
EFFINGHAM* PTCLDY 51 49 95 CALM 30.11R TC 10
MARION MOCLDY 54 52 94 CALM 30.07R TC 12
MT. VERNON PTCLDY 59 54 83 N5 30.08R TC 15
CENTRALIA* MOCLDY 57 56 96 CALM 30.08R TC 14
SALEM* MOCLDY 61 52 73 MISG 30.08R TC 16
ILZ067-068-072-073-078-083-087-091-271300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 51 48 89 N3 30.08R TC 11
FAIRFIELD* PTCLDY 57 50 77 CALM 30.08R TC 14
HARRISBURG* MOCLDY 58 55 88 CALM 30.07R TC 15
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