937
ASUS43 KLOT 180712
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 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.
ILZ001-002-007-009-015-016-024-180800-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 63 62 97 SW3 30.03F TC 17
STERLING* PTCLDY 63 63 100 CALM 30.04F TC 17
SAVANNA* PTCLDY 63 61 94 SE5 30.03F TC 17
ILZ003-004-008-010-011-017-018-180800-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 63 61 93 S5 30.03F TC 17
FREEPORT* PTCLDY 65 63 95 SW6 30.04F TC 18
ROCHELLE* PTCLDY 60 58 94 CALM 30.04F TC 16
DE KALB* PTCLDY 67 61 81 SW7 30.04F TC 19
PERU* PTCLDY 66 64 94 CALM 30.04F TC 19
ILZ005-006-012>014-019>023-180800-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 69 61 75 SW7 30.01F TC 21
CHICAGO-MIDWAY PTCLDY 67 59 75 SW7 30.01F TC 19
AURORA PTCLDY 64 63 96 CALM 30.02F TC 18
JOLIET* CLEAR 66 66 99 CALM 30.03F TC 19
WAUKEGAN CLEAR 63 61 93 SW6 30.00F TC 17
DUPAGE AIRPORT PTCLDY 65 62 90 CALM 30.03S TC 18
KANKAKEE* CLEAR 64 63 95 SW6 30.04F TC 18
WHEELING PTCLDY 67 61 81 S3 30.02F TC 19
ROMEOVILLE* CLEAR 64 64 100 S6 30.04F TC 18
LANSING* CLEAR 63 59 89 CALM 30.03F TC 17
NORTHERLY ISL* N/A 71 56 58 W5 N/A TC 22
LMZ740>746-180800-
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 71 74 230/ 10/ 12 1015.4 1/ 3
WAUKEGAN HARBOR 71 74 240/ 10/ 14 1016.3 1/ 3
WILMETTE BUOY 72 230/ 12/ 16 1018.9F 1/ 2
CHICAGO BUOY 73 73 1015.3 1/ 5
HARRISON CRIB 75 220/ 12/ 12 N/A
NORTHERLY ISL 71 240/ 5/ 7 N/A
CALUMET HARBOR 69 210/ 4/ 5 1016.9F
MICHIGAN CITY 69 200/ 4/ 5 1015.6
MICH CITY BUOY 72 74 230/ 10/ 14 N/A 1/ 4
ST. JOSEPH BUOY 73 74 240/ 10/ 12 1017.2F 1/ 2
ILZ025>027-034>036-040-047-049-050-058-095>099-180800-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 65 63 93 S3 30.06F TC 18
GALESBURG* MOCLDY 63 63 100 CALM 30.06F TC 17
MACOMB* PTCLDY 63 63 100 CALM 30.08F TC 17
JACKSONVILLE* CLEAR 63 63 100 CALM 30.06F TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-180800-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 63 63 100 S3 30.04F TC 17
BLOOMINGTON CLEAR 65 63 93 SW5 30.06F TC 18
DECATUR CLEAR 64 62 93 CALM 30.06F TC 18
PEORIA PTCLDY 66 64 93 CALM 30.04F TC 19
LACON* PTCLDY 65 63 93 CALM 30.03F TC 18
LINCOLN* CLEAR 64 64 100 CALM 30.05F TC 18
SPRINGFIELD CLEAR 64 63 96 CALM 30.06F TC 18
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-180800-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 63 62 97 W3 30.05F TC 17
RANTOUL* CLEAR 63 62 99 CALM 30.06F TC 17
MATTOON CLEAR 64 62 93 W3 30.05S TC 18
PARIS* CLEAR 64 63 97 CALM 30.05F TC 18
ILZ079-100>102-180800-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON FOG 67 66 98 CALM 30.06F VSB 1 TC 19
BELLEVILLE CLEAR 68 67 97 CALM 30.03F TC 20
CAHOKIA* CLEAR 67 66 97 CALM 30.05F TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180800-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 67 66 99 CALM 30.06S TC 19
EFFINGHAM* CLEAR 64 64 100 CALM 30.07F TC 18
MARION CLEAR 65 64 99 CALM 30.07S TC 18
MT. VERNON CLEAR 64 64 100 CALM 30.06F FOG TC 18
CENTRALIA* CLEAR 66 65 98 CALM 30.06F TC 19
SALEM* N/A 67 67 100 MISG 30.06S FOG TC 19
METROPOLIS* CLEAR 64 63 97 CALM 30.06S TC 18
ILZ067-068-072-073-078-083-087-091-180800-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 67 64 90 NW3 30.03F TC 19
FLORA* CLEAR 66 64 94 NW5 30.05F TC 19
FAIRFIELD* CLEAR 64 63 97 CALM 30.05S TC 18
HARRISBURG* CLEAR 65 65 99 CALM 30.06S TC 18
ROBINSON* CLEAR 64 64 100 NW1 30.03F TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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