217
ASUS43 KLOT 181410
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 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.
ILZ001-002-007-009-015-016-024-181500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 73 66 78 W3 30.01F TC 23
STERLING* PTSUNNY 70 67 90 SW7 30.03F TC 21
SAVANNA* CLOUDY 69 66 91 CALM 30.02S TC 21
ILZ003-004-008-010-011-017-018-181500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 68 64 87 S5 30.01F TC 20
FREEPORT* CLOUDY 69 67 95 SW7 30.02F TC 20
ROCHELLE* PTSUNNY 68 64 88 SW3 30.03F TC 20
DE KALB* CLOUDY 71 65 80 W7 30.03F TC 22
PERU* PTSUNNY 72 66 83 SW3 30.02F TC 22
ILZ005-006-012>014-019>023-181500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 71 63 75 SW6 30.00F TC 22
CHICAGO-MIDWAY CLOUDY 71 64 78 SW7 30.01F TC 22
AURORA CLOUDY 69 65 86 W3 30.03S TC 21
JOLIET* CLOUDY 72 67 85 CALM 30.03F TC 22
WAUKEGAN MOSUNNY 69 63 81 W6 29.99S TC 21
DUPAGE AIRPORT PTSUNNY 69 64 84 SW7 30.02S TC 21
KANKAKEE* PTSUNNY 71 67 87 CALM 30.04F TC 22
WHEELING PTSUNNY 73 62 68 W7 30.02S TC 23
LANSING* CLOUDY 69 64 83 SW6 30.03F TC 21
NORTHERLY ISL* N/A 72 60 66 SW6 N/A TC 22
LMZ740>746-181500-
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 74 240/ 6/ 8 1015.2 0
WAUKEGAN HARBOR 73 74 260/ 6/ 8 1016.1 0
WILMETTE BUOY 73 270/ 8/ 10 1018.8F 1
CHICAGO BUOY 74 73 1014.9 1
HARRISON CRIB 74 260/ 9/ 11 N/A
NORTHERLY ISL 72 250/ 4/ 6 N/A
CALUMET HARBOR 71 210/ 5/ 6 1016.6
MICHIGAN CITY 71 230/ 10/ 12 1015.1S
MICH CITY BUOY 72 74 240/ 10/ 14 N/A 2/ 3
ST. JOSEPH BUOY 73 74 240/ 10/ 14 1017.0R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-181500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 71 66 84 SW8 30.04F TC 22
GALESBURG* PTSUNNY 71 67 89 S7 30.04F TC 22
MACOMB* PTSUNNY 71 69 95 W3 30.06F TC 22
JACKSONVILLE* PTSUNNY 72 69 90 CALM 30.06F TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-181500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOSUNNY 70 69 96 CALM 30.05R TC 21
BLOOMINGTON MOSUNNY 73 67 81 W7 30.07S TC 23
DECATUR MOSUNNY 73 65 75 SW3 30.06S TC 23
PEORIA PTSUNNY 70 67 90 SW6 30.04F TC 21
LACON* PTSUNNY 70 65 85 S3 30.03F TC 21
LINCOLN* PTSUNNY 73 70 91 CALM 30.06S TC 23
SPRINGFIELD PTSUNNY 73 67 81 W6 30.06R TC 23
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 72 66 81 SW5 30.06F TC 22
RANTOUL* SUNNY 72 68 87 SW7 30.06S TC 22
MATTOON SUNNY 74 64 71 CALM 30.06F TC 23
PARIS* MOSUNNY 71 66 82 CALM 30.07S TC 22
ILZ079-100>102-181500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 72 68 88 CALM 30.07S TC 22
BELLEVILLE SUNNY 75 73 92 CALM 30.04F TC 24
CAHOKIA* SUNNY 75 69 81 CALM 30.06S TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 73 68 83 CALM 30.08S TC 23
CAIRO* SUNNY 77 70 80 CALM 30.09S TC 25
EFFINGHAM* SUNNY 74 67 80 CALM 30.08F TC 23
MT. VERNON SUNNY 75 67 76 CALM 30.08S TC 24
CENTRALIA* SUNNY 75 69 82 CALM 30.08S TC 24
SALEM* N/A 73 71 91 MISG 30.07F TC 23
METROPOLIS* SUNNY 75 67 76 CALM 30.09S TC 24
ILZ067-068-072-073-078-083-087-091-181500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 74 66 76 CALM 30.07S TC 23
FLORA* SUNNY 73 64 73 CALM 30.08S TC 23
FAIRFIELD* SUNNY 73 65 74 CALM 30.08S TC 23
HARRISBURG* SUNNY 75 68 80 CALM 30.09S TC 24
ROBINSON* SUNNY 73 68 83 VRB2 30.06S TC 23
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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