345
ASUS43 KLOT 181101
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 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.
ILZ001-002-007-009-015-016-024-181200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 66 63 90 CALM 30.02F TC 19
STERLING* MOCLDY 62 62 100 CALM 30.03F TC 17
SAVANNA* MOCLDY 63 62 95 S3 30.01F TC 17
ILZ003-004-008-010-011-017-018-181200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 62 61 96 SE6 30.03S TC 17
FREEPORT* MOCLDY 64 63 94 SW7 30.03F TC 18
ROCHELLE* MOCLDY 59 57 94 S5 30.04F TC 15
DE KALB* PTCLDY 64 62 94 W7 30.04S TC 18
ILZ005-006-012>014-019>023-181200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 66 62 87 SW6 30.01S TC 19
CHICAGO-MIDWAY PTCLDY 66 62 87 W7 30.01F TC 19
AURORA PTCLDY 61 61 100 SW3 30.03S TC 16
JOLIET* PTCLDY 64 64 100 CALM 30.04S TC 18
WAUKEGAN PTCLDY 64 61 90 W5 30.00R TC 18
DUPAGE AIRPORT PTCLDY 63 62 97 CALM 30.02S TC 17
KANKAKEE* PTCLDY 63 62 96 CALM 30.05F TC 17
WHEELING PTCLDY 63 61 93 CALM 30.02F TC 17
ROMEOVILLE* CLEAR 66 66 100 SW5 30.04S TC 19
LANSING* PTCLDY 62 59 91 SW3 30.04R TC 17
NORTHERLY ISL* N/A 68 61 78 W5 N/A TC 20
LMZ740>746-181200-
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 68 74 260/ 10/ 14 1015.2S 1
WAUKEGAN HARBOR 69 74 260/ 10/ 12 1016.2S 1
WILMETTE BUOY 71 260/ 12/ 16 1018.7F 1/ 2
CHICAGO BUOY 71 73 1015.2S 1
HARRISON CRIB 73 240/ 11/ 13 N/A
NORTHERLY ISL 69 260/ 4/ 9 N/A
CALUMET HARBOR 67 230/ 3/ 5 1016.9
MICHIGAN CITY 68 220/ 9/ 10 1015.4R
MICH CITY BUOY 72 74 240/ 12/ 16 N/A 2/ 3
ST. JOSEPH BUOY 73 74 250/ 12/ 16 1017.2R 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOCLDY 66 63 90 S6 30.05F TC 19
GALESBURG* MOCLDY 63 63 100 CALM 30.06S TC 17
MACOMB* MOCLDY 63 63 100 SW3 30.06F TC 17
JACKSONVILLE* PTCLDY 63 63 100 CALM 30.06S TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-181200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 62 62 100 CALM 30.05S TC 17
BLOOMINGTON MOCLDY 63 63 100 SW5 30.07S TC 17
DECATUR PTCLDY 63 61 93 CALM 30.07S TC 17
PEORIA MOCLDY 65 64 97 SW3 30.05S TC 18
LACON* MOCLDY 64 63 94 CALM 30.04S TC 18
LINCOLN* MOCLDY 62 62 100 CALM 30.06S TC 17
SPRINGFIELD PTCLDY 63 62 97 CALM 30.06S TC 17
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 60 60 100 W3 30.06S TC 16
RANTOUL* PTCLDY 61 61 99 W6 30.06S TC 16
MATTOON PTCLDY 63 61 93 MISG 30.05F TC 17
PARIS* PTCLDY 60 60 97 CALM 30.06R TC 16
ILZ079-100>102-181200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 63 63 97 CALM 30.07F FOG TC 17
BELLEVILLE CLEAR 66 65 97 CALM 30.04S TC 19
CAHOKIA* CLEAR 64 64 100 CALM 30.06S TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 64 64 100 CALM 30.07R TC 18
MARION CLEAR 65 64 98 CALM 30.08R FOG TC 18
MT. VERNON CLEAR 62 62 100 CALM 30.07S FOG TC 17
CENTRALIA* FOG 63 62 98 CALM 30.07S VSB 3/4 TC 17
SALEM* FOG 64 64 100 MISG 30.07R VSB 1/2 TC 18
METROPOLIS* CLEAR 62 61 97 CALM 30.07R TC 17
ILZ067-068-072-073-078-083-087-091-181200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 65 63 93 NW6 30.05S TC 18
FLORA* CLEAR 64 N/A N/A CALM 30.07R TC 18
FAIRFIELD* CLEAR 63 62 98 CALM 30.06S TC 17
HARRISBURG* CLEAR 63 63 100 CALM 30.07R TC 17
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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