359
ASUS43 KLOT 171403
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 AM 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.
ILZ001-002-007-009-015-016-024-171500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE SUNNY 72 66 81 W5 30.08R TC 22
STERLING* SUNNY 72 64 76 N8 30.08R TC 22
SAVANNA* SUNNY 71 64 79 NW6 30.08R TC 21
ILZ003-004-008-010-011-017-018-171500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOSUNNY 69 63 81 NW8 30.07S TC 21
FREEPORT* SUNNY 69 67 95 CALM 30.09S TC 20
ILZ005-006-012>014-019>023-171500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 73 64 73 NE13 30.01S TC 23
CHICAGO-MIDWAY PTSUNNY 74 63 68 N12 30.00S TC 23
AURORA CLOUDY 70 66 87 N9 30.03S TC 21
JOLIET* SUNNY 74 70 86 N6 30.02S TC 23
WAUKEGAN PTSUNNY 72 64 76 NE6 30.02S TC 22
DUPAGE AIRPORT PTSUNNY 71 66 84 N10 30.02S TC 22
WHEELING PTSUNNY 72 66 81 N6 30.03F TC 22
LANSING* MOSUNNY 73 66 78 N6 30.01S TC 23
NORTHERLY ISL* N/A 72 62 71 N9 N/A TC 22
LMZ740>746-171500-
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 72 74 360/ 12/ 16 1016.3R 2/ 4
WAUKEGAN HARBOR 72 74 340/ 14/ 19 1017.1R 2/ 4
WILMETTE BUOY 72 50/ 12/ 17 1019.3R 3/ 5
CHICAGO BUOY 73 73 1015.0R 3/ 4
HARRISON CRIB 73 30/ 16/ 17 N/A
NORTHERLY ISL 72 20/ 8/ 12 N/A
CALUMET HARBOR 75 10/ 7/ 11 1016.0
MICHIGAN CITY 74 30/ 12/ 14 1014.0R
MICH CITY BUOY 73 74 30/ 12/ 16 N/A 2/ 4
ST. JOSEPH BUOY 72 75 20/ 12/ 14 1016.6R 2/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-171500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY SUNNY 72 67 84 N5 30.09S TC 22
MACOMB* SUNNY 72 70 92 NW5 30.10F TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-171500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON SUNNY 72 65 78 MISG 30.06R TC 22
DECATUR SUNNY 73 65 75 N12 30.05R TC 23
PEORIA SUNNY 72 64 76 NW8 30.06R TC 22
LINCOLN* SUNNY 73 68 85 N6 30.06R TC 23
SPRINGFIELD SUNNY 73 64 73 N9 30.05S TC 23
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-171500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 73 66 78 NW9 30.02S TC 23
MATTOON CLOUDY 73 69 87 N8 30.02R TC 23
ILZ079-100>102-171500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOSUNNY 75 70 83 N7 30.06R TC 24
CAHOKIA* PTSUNNY 75 70 84 NW9 30.05R TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-171500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MT. VERNON PTSUNNY 76 74 93 VRB6 30.03R TC 24
CENTRALIA* CLOUDY 75 75 98 CALM 30.03S TC 24
SALEM* N/A 76 76 100 MISG 30.03S TC 24
ILZ067-068-072-073-078-083-087-091-171500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTSUNNY 76 73 91 W10 30.00R TC 24
FAIRFIELD* CLOUDY 74 74 98 NW5 30.02S TC 24
HARRISBURG* CLOUDY 75 75 100 NW6 30.03R TC 24
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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