123
ASUS43 KLOT 271701
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 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.
ILZ001-002-007-009-015-016-024-271800-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 66 55 67 CALM 30.13S TC 19
STERLING* SUNNY 72 49 44 CALM 30.14F TC 22
SAVANNA* MOSUNNY 69 53 55 W8 30.13F TC 21
ILZ003-004-008-010-011-017-018-271800-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 70 48 45 CALM 30.14F TC 21
FREEPORT* MOSUNNY 71 49 45 CALM 30.16F TC 22
DE KALB* MOSUNNY 70 49 48 NW7 30.15F TC 21
ILZ005-006-012>014-019>023-271800-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 69 47 45 VRB5 30.13F TC 21
CHICAGO-MIDWAY PTSUNNY 70 46 42 MISG 30.13F TC 21
AURORA SUNNY 69 47 45 VRB6 30.13F TC 21
JOLIET* MOSUNNY 72 48 43 N3 30.13F TC 22
WAUKEGAN MOSUNNY 67 52 58 NE6 30.13F TC 19
DUPAGE AIRPORT MOSUNNY 69 50 50 N6 30.14F TC 21
WHEELING MOSUNNY 69 49 48 NE9 30.15S TC 21
LANSING* SUNNY 69 45 41 N6 30.13F TC 21
NORTHERLY ISL* N/A 69 54 58 N5 N/A TC 21
LMZ740>746-271800-
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 63 65 360/ 6/ 8 1019.5F 1
WAUKEGAN HARBOR 63 64 360/ 6/ 10 1020.3F 1
WILMETTE BUOY 64 40/ 4/ 6 1023.1S 1
CHICAGO BUOY 64 64 20/ 6/ 8 1019.4S 1/ 3
HARRISON CRIB 63 20/ 6/ 7 N/A
NORTHERLY ISL 67 40/ 6/ 7 N/A
CALUMET HARBOR 66 10/ 6/ 10 1020.5
MICHIGAN CITY 64 10/ 5/ 6 1019.6
MICH CITY BUOY 59 62 10/ 6/ 8 N/A 1
ST. JOSEPH BUOY 53 53 360/ 2/ 4 1021.1F 0
ILZ025>027-034>036-040-047-049-050-058-095>099-271800-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 62 56 80 E3 30.12F TC 17
GALESBURG* PTSUNNY 69 54 59 CALM 30.14F TC 21
MACOMB* CLOUDY 69 57 65 N5 30.14F TC 21
ILZ028>032-037-038-041>044-048-051>054-059>061-271800-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOSUNNY 72 50 45 CALM 30.13F TC 22
DECATUR MOSUNNY 72 47 40 VRB5 30.11F TC 22
PEORIA PTSUNNY 69 52 54 SW3 30.12F TC 21
LACON* MOSUNNY 71 46 40 CALM 30.12F TC 22
SPRINGFIELD PTSUNNY 71 53 52 N5 30.12F TC 22
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-271800-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 71 43 36 CALM 30.12F TC 22
MATTOON MOSUNNY 71 43 36 CALM 30.10F TC 22
ILZ079-100>102-271800-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 66 54 63 N9 30.12S TC 19
CAHOKIA* PTSUNNY 72 57 59 NE6 30.10F TC 22
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-271800-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE MOSUNNY 72 46 40 NW5 30.09F TC 22
CAIRO* PTSUNNY 74 52 45 CALM 30.08F TC 24
EFFINGHAM* MOSUNNY 74 43 32 E3 30.11F TC 24
MARION MOSUNNY 73 48 40 CALM 30.09F TC 23
MT. VERNON PTSUNNY 73 51 46 VRB5 30.10S TC 23
CENTRALIA* CLOUDY 73 49 44 W3 30.10F TC 23
SALEM* PTSUNNY 74 51 44 MISG 30.10F TC 24
ILZ067-068-072-073-078-083-087-091-271800-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 73 41 31 N8 30.09F TC 23
FLORA* MOSUNNY 73 46 38 N5 30.10S HAZE TC 23
FAIRFIELD* PTSUNNY 73 45 36 CALM 30.09F TC 23
HARRISBURG* PTSUNNY 74 47 38 N3 30.09S TC 23
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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