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ASUS43 KLOT 180912
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 AM CDT MON AUG 18 2025
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.
ILZ001-002-007-009-015-016-024-181000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 73 72 96 E12 30.00S TC 23
ILZ003-004-008-010-011-017-018-181000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 69 68 96 SE3 30.05R TC 21
ROCHELLE* MOCLDY 69 67 94 SE3 30.05F TC 21
DE KALB* MOCLDY 69 69 99 E6 30.06F TC 21
PERU* PTCLDY 70 69 98 E7 30.05S TC 21
ILZ005-006-012>014-019>023-181000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 74 70 87 E5 30.05F TC 23
CHICAGO-MIDWAY CLOUDY 76 69 79 SE12 30.05F TC 24
AURORA MOCLDY 71 68 90 NW3 30.05F TC 22
JOLIET* PTCLDY 74 72 92 CALM 30.05F TC 23
WAUKEGAN CLOUDY 75 69 81 SE9G20 30.06F TC 24
DUPAGE AIRPORT MOCLDY 73 69 87 E3 30.04F TC 23
KANKAKEE* MOCLDY 70 68 94 E3 30.07S TC 21
WHEELING CLOUDY 73 70 90 MISG 30.06F TC 23
MORRIS* PTCLDY 69 69 100 CALM 30.04F TC 21
ROMEOVILLE* CLOUDY 73 73 100 E9 30.06F TC 23
LANSING* MOCLDY 72 69 92 SE7 30.07S TC 22
NORTHERLY ISL* N/A 74 69 85 E13 N/A TC 23
LMZ740>746-181000-
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)
S. MID LAKE BUOY 71 76 110/ 19/ 23 1018.8S 5/ 5
WINTHROP HARBOR 75 75 120/ 16/ 21 N/A 3/ 4
WAUKEGAN HARBOR 75 76 120/ 16/ 19 N/A 3/ 5
WILMETTE BUOY 74 130/ 17/ 21 1020.0F 3/ 5
NORTHERLY ISL 74 110/ 13 N/A
CALUMET HARBOR 75 100/ 6/ 8 1017.2
BURNS HARBOR 73 130/ 9/ 13 1018.6R
MICHIGAN CITY 72 120/ 13/ 16 1016.6R
MICH CITY BUOY 73 77 120/ 16/ 19 1016.7R 3/ 5
ST. JOSEPH BUOY 71 78 80/ 19/ 25 1019.4R 2/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-181000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 74 71 91 SE3 29.98F TC 23
GALESBURG* CLOUDY 76 76 100 E6 30.01F FOG TC 24
MACOMB* FOG 73 73 100 CALM 30.01F VSB 1/4 TC 23
JACKSONVILLE* CLEAR 76 75 98 E6 30.00S TC 24
PITTSFIELD* CLEAR 74 74 98 CALM 30.00F TC 23
ILZ028>032-037-038-041>044-048-051>054-059>061-181000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 71 70 97 E6 30.05F TC 22
BLOOMINGTON PTCLDY 72 72 100 E6 30.06R FOG TC 22
DECATUR PTCLDY 77 73 87 S3 30.03F TC 25
PEORIA PTCLDY 77 74 90 E7 30.02S TC 25
LACON* CLOUDY 71 69 92 CALM 30.03S TC 22
LINCOLN* CLEAR 76 76 100 CALM 30.02S TC 24
SPRINGFIELD CLEAR 77 74 90 S7 30.00F TC 25
TAYLORVILLE CLEAR 75 73 94 SE6 30.02F TC 24
ILZ033-039-045-046-055>057-062-063-181000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 74 73 97 E6 30.05R FOG TC 23
DANVILLE* MOCLDY 74 73 96 E5 30.06S TC 23
RANTOUL* PTCLDY 74 73 98 NE3 30.06R TC 23
MATTOON CLEAR 74 72 93 SE5 30.03S TC 23
ILZ079-100>102-181000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 74 73 96 SW3 30.01S FOG TC 24
BELLEVILLE CLEAR 77 75 93 CALM 29.99S TC 25
CAHOKIA* CLEAR 76 74 93 S3 30.00S TC 24
SPARTA* CLEAR 77 76 95 CALM 30.03S TC 25
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 73 72 96 E3 30.01S FOG TC 23
CAIRO* PTCLDY 76 75 97 CALM 30.01S TC 25
EFFINGHAM* CLEAR 73 73 100 CALM 30.05S TC 23
MARION CLEAR 74 73 96 CALM 30.03S TC 24
MT. VERNON CLEAR 74 73 97 CALM 30.03S FOG TC 23
CENTRALIA* CLEAR 74 73 96 E3 30.03R TC 23
SALEM* CLEAR 77 73 86 CALM 30.03S TC 25
METROPOLIS* CLEAR 73 72 96 CALM 30.02R TC 23
ILZ067-068-072-073-078-083-087-091-181000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 73 72 96 CALM 30.04R TC 23
FLORA* CLEAR 73 N/A N/A CALM 30.04S TC 23
FAIRFIELD* PTCLDY 73 71 94 CALM 30.03S TC 23
HARRISBURG* CLEAR 72 70 92 CALM 30.03S TC 22
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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