780
ASUS43 KLOT 181301
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 AM CDT TUE AUG 18 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.
ILZ001-002-007-009-015-016-024-181400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 69 65 86 W3 30.03R TC 21
STERLING* PTSUNNY 66 66 100 W3 30.04S TC 19
SAVANNA* CLOUDY 65 64 94 CALM 30.03R TC 19
ILZ003-004-008-010-011-017-018-181400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 65 63 93 S5 30.03R TC 18
FREEPORT* PTSUNNY 67 65 95 CALM 30.04S TC 19
ILZ005-006-012>014-019>023-181400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 70 62 76 SW7 30.01S TC 21
CHICAGO-MIDWAY PTSUNNY 70 63 78 W5 30.02S TC 21
AURORA PTSUNNY 66 64 93 W3 30.03R TC 19
JOLIET* PTSUNNY 68 66 94 CALM 30.04R TC 20
WAUKEGAN MOSUNNY 68 63 84 W6 29.99F TC 20
DUPAGE AIRPORT PTSUNNY 67 64 90 SW3 30.02S TC 19
WHEELING PTSUNNY 71 62 73 W3 30.02F TC 22
LANSING* PTSUNNY 67 63 85 W3 30.03F TC 20
NORTHERLY ISL* N/A 73 61 65 W3 N/A TC 23
LMZ740>746-181400-
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 69 74 240/ 12/ 14 1015.4S 1
WAUKEGAN HARBOR 70 74 250/ 12/ 14 1016.2F 1
WILMETTE BUOY 71 270/ 10/ 14 1018.8F 1/ 2
CHICAGO BUOY 73 73 1015.2F 1
HARRISON CRIB 71 260/ 12/ 14 N/A
NORTHERLY ISL 71 260/ 3/ 8 N/A
CALUMET HARBOR 70 220/ 4/ 6 1016.4
MICHIGAN CITY 69 220/ 8/ 9 1015.4S
MICH CITY BUOY 71 74 240/ 10/ 14 N/A 2/ 3
ST. JOSEPH BUOY 73 74 240/ 10/ 14 1017.1F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-181400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTSUNNY 68 65 90 SW5 30.06R TC 20
MACOMB* PTSUNNY 67 67 100 W3 30.09R TC 19
ILZ028>032-037-038-041>044-048-051>054-059>061-181400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOSUNNY 70 67 90 SW3 30.07S TC 21
DECATUR MOSUNNY 70 66 87 S3 30.06F TC 21
PEORIA PTSUNNY 67 66 97 S3 30.05R TC 19
LINCOLN* MOSUNNY 68 68 100 CALM 30.06S TC 20
SPRINGFIELD MOSUNNY 69 66 90 CALM 30.05F TC 21
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 67 65 93 W5 30.07S TC 19
MATTOON MOSUNNY 67 64 90 CALM 30.07S TC 19
ILZ079-100>102-181400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 70 66 88 CALM 30.07R TC 21
BELLEVILLE SUNNY 71 70 97 CALM 30.05R TC 22
CAHOKIA* SUNNY 70 68 93 CALM 30.06S TC 21
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 68 66 94 CALM 30.08R TC 20
MT. VERNON SUNNY 67 66 97 CALM 30.08S TC 19
CENTRALIA* SUNNY 70 69 98 CALM 30.08R TC 21
SALEM* N/A 69 69 100 MISG 30.08R TC 21
ILZ067-068-072-073-078-083-087-091-181400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 69 66 90 CALM 30.07R TC 21
FAIRFIELD* SUNNY 68 65 89 CALM 30.08R TC 20
HARRISBURG* SUNNY 69 68 96 CALM 30.09R TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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