631
ASUS43 KLOT 180101
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 PM CDT MON AUG 17 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.
ILZ001-002-007-009-015-016-024-180200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 72 64 76 CALM 30.01S TC 22
STERLING* PTCLDY 71 65 81 CALM 30.02S TC 22
SAVANNA* PTCLDY 77 62 59 W6 30.01S TC 25
ILZ003-004-008-010-011-017-018-180200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 74 61 63 SW3 30.01S TC 23
FREEPORT* CLEAR 73 66 77 CALM 30.02F TC 23
ILZ005-006-012>014-019>023-180200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 75 59 57 SE3 29.99S TC 24
CHICAGO-MIDWAY MOCLDY 73 59 61 SE6 29.99S TC 23
AURORA PTCLDY 72 66 81 CALM 30.00S TC 22
JOLIET* PTCLDY 73 64 73 CALM 30.00S TC 23
WAUKEGAN CLEAR 70 60 70 S3 29.98F TC 21
DUPAGE AIRPORT PTCLDY 73 59 61 W5 29.99F TC 23
WHEELING PTCLDY 74 59 59 SE3 30.01S TC 23
LANSING* PTCLDY 71 57 61 NE3 30.01R TC 22
NORTHERLY ISL* N/A 70 62 76 S1 N/A TC 21
LMZ740>746-180200-
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 74 74 170/ 6/ 10 1015.1F 1/ 6
WAUKEGAN HARBOR 74 75 190/ 6/ 10 1016.1F 1/ 5
WILMETTE BUOY 73 190/ 4/ 8 1019.1F 1/ 6
CHICAGO BUOY 74 74 1014.7S 2/ 4
HARRISON CRIB 74 170/ 3/ 4 N/A
NORTHERLY ISL 72 CALM / 5 N/A
CALUMET HARBOR 72 100/ 2/ 3 1015.9F
MICHIGAN CITY 74 10/ 3/ 3 1014.3F
MICH CITY BUOY 73 74 330/ 2/ 4 N/A 2/ 4
ST. JOSEPH BUOY 73 75 320/ 6/ 8 1016.3F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-180200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 74 66 76 CALM 30.04S TC 23
ILZ028>032-037-038-041>044-048-051>054-059>061-180200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTCLDY 73 62 68 NW7 30.04S TC 23
DECATUR PTCLDY 72 62 71 N5 30.02F TC 22
PEORIA PTCLDY 74 65 73 CALM 30.02F TC 23
LINCOLN* PTCLDY 75 65 70 CALM 30.02S TC 24
SPRINGFIELD PTCLDY 73 68 84 CALM 30.02F TC 23
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-180200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 69 65 86 NW6 30.02S TC 21
MATTOON PTCLDY 71 64 78 NW6 30.00F TC 22
ILZ079-100>102-180200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 75 66 73 N5 30.02S TC 24
BELLEVILLE MOCLDY 77 70 78 N5 29.99S TC 25
CAHOKIA* MOCLDY 78 65 63 N8 30.01S HX 80 TC 26
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MT. VERNON PTCLDY 72 67 84 CALM 30.01F TC 22
CENTRALIA* MOCLDY 74 69 84 CALM 30.01S TC 23
ILZ067-068-072-073-078-083-087-091-180200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 74 65 73 NW7 29.99S TC 23
FAIRFIELD* PTCLDY 73 65 76 CALM 30.00F TC 23
HARRISBURG* PTCLDY 75 66 75 N5 30.01R TC 24
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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