820
ASUS43 KLOT 271611
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 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.
ILZ001-002-007-009-015-016-024-271700-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 64 55 72 CALM 30.13S TC 18
STERLING* PTSUNNY 68 52 56 SE5 30.15S TC 20
SAVANNA* MOSUNNY 66 56 70 W3 30.14S TC 19
ILZ003-004-008-010-011-017-018-271700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 68 50 52 E3 30.16R TC 20
FREEPORT* MOSUNNY 68 53 58 S3 30.17S TC 20
ROCHELLE* MOSUNNY 68 49 50 CALM 30.15S TC 20
DE KALB* MOSUNNY 66 50 55 CALM 30.16S TC 19
PERU* MOSUNNY 70 52 52 S3 30.14S TC 21
ILZ005-006-012>014-019>023-271700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 67 47 48 NE8 30.14S TC 19
CHICAGO-MIDWAY PTSUNNY 68 47 46 NW6 30.14S TC 20
AURORA MOSUNNY 66 51 58 SE3 30.14S TC 19
JOLIET* MOSUNNY 69 54 57 NE5 30.14F TC 21
WAUKEGAN MOSUNNY 67 52 58 E7 30.14S TC 19
DUPAGE AIRPORT MOSUNNY 67 51 56 CALM 30.15S TC 19
KANKAKEE* SUNNY 68 47 48 N5 30.14F TC 20
WHEELING MOSUNNY 67 50 54 N8 30.15F TC 19
ROMEOVILLE* SUNNY 68 50 52 N5 30.15S TC 20
LANSING* SUNNY 67 48 50 N6 30.14F TC 20
NORTHERLY ISL* N/A 68 56 65 N5 N/A TC 20
LMZ740>746-271700-
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 1019.7 1
WAUKEGAN HARBOR 63 64 350/ 6/ 8 1020.4 1
WILMETTE BUOY 63 360/ 6/ 8 1023.1R 1
CHICAGO BUOY 64 64 340/ 4/ 8 1019.4 1/ 3
HARRISON CRIB 63 350/ 5/ 6 N/A
NORTHERLY ISL 67 20/ 4/ 6 N/A
CALUMET HARBOR 65 350/ 5/ 6 1020.6S
MICHIGAN CITY 63 CALM / 4 N/A
MICH CITY BUOY 58 62 350/ 4/ 6 N/A 1
ST. JOSEPH BUOY 53 53 350/ 4/ 4 1021.3R 1
ILZ025>027-034>036-040-047-049-050-058-095>099-271700-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 61 54 77 CALM 30.13R TC 16
GALESBURG* PTSUNNY 65 55 72 S3 30.15S TC 18
MACOMB* PTSUNNY 66 58 74 N6 30.15S TC 19
JACKSONVILLE* CLOUDY 59 59 100 W3 30.13S TC 15
PITTSFIELD* PTSUNNY 67 52 58 CALM 30.13S TC 20
ILZ028>032-037-038-041>044-048-051>054-059>061-271700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOSUNNY 70 47 42 N3 30.14S TC 21
BLOOMINGTON MOSUNNY 68 51 54 CALM 30.15S TC 20
DECATUR MOSUNNY 69 49 48 CALM 30.13S TC 21
PEORIA PTSUNNY 66 52 60 CALM 30.13S TC 19
LACON* MOSUNNY 68 49 50 SE5 30.13S TC 20
LINCOLN* MOSUNNY 73 51 44 CALM 30.13S TC 23
SPRINGFIELD PTSUNNY 69 54 58 VRB3 30.13R TC 21
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-271700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 68 46 45 CALM 30.13S TC 20
RANTOUL* SUNNY 69 44 39 SW3 30.13F TC 21
MATTOON MOSUNNY 70 45 40 S3 30.11F TC 21
PARIS* SUNNY 69 42 37 E3 30.12F TC 21
ILZ079-100>102-271700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 64 52 63 N10 30.12S TC 18
BELLEVILLE DRIZZLE 66 61 84 CALM 30.09S TC 19
CAHOKIA* PTSUNNY 66 58 75 N6 30.11S TC 19
SPARTA* DRIZZLE 62 59 90 CALM 30.12S TC 17
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-271700-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE MOSUNNY 66 54 63 N3 30.10S TC 19
CAIRO* PTSUNNY 68 56 65 CALM 30.09S TC 20
EFFINGHAM* MOSUNNY 71 46 40 CALM 30.13S TC 22
MARION MOSUNNY 70 52 52 CALM 30.10S TC 21
MT. VERNON PTSUNNY 73 50 44 CALM 30.10S TC 23
CENTRALIA* PTSUNNY 71 52 50 E3 30.11R TC 22
SALEM* PTSUNNY 71 52 50 MISG 30.11S TC 22
METROPOLIS* PTSUNNY 73 50 44 SW3 30.09S TC 23
ILZ067-068-072-073-078-083-087-091-271700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 69 43 38 N3 30.11S TC 21
FLORA* MOSUNNY 72 50 46 CALM 30.11S TC 22
FAIRFIELD* MOSUNNY 72 47 40 CALM 30.10S TC 22
HARRISBURG* PTSUNNY 73 50 43 CALM 30.09S TC 23
ROBINSON* MOSUNNY 70 43 37 NE3 30.10F TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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