922
ASUS43 KLOT 180912
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 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.
ILZ001-002-007-009-015-016-024-181000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 64 62 93 CALM 30.03R TC 18
STERLING* PTCLDY 63 63 100 SW3 30.04R TC 17
SAVANNA* PTCLDY 62 60 94 SE3 30.03S TC 17
ILZ003-004-008-010-011-017-018-181000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLEAR 62 61 96 SE3 30.04R TC 17
FREEPORT* PTCLDY 65 63 95 SW5 30.04R TC 18
ROCHELLE* PTCLDY 59 57 94 CALM 30.05R TC 15
DE KALB* PTCLDY 64 62 91 W7 30.04R TC 18
PERU* PTCLDY 64 64 100 CALM 30.04R FOG TC 18
ILZ005-006-012>014-019>023-181000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLEAR 67 62 84 SW7 30.00S TC 19
CHICAGO-MIDWAY PTCLDY 67 62 84 SW8 30.01S TC 19
AURORA PTCLDY 62 62 100 CALM 30.02S TC 17
JOLIET* PTCLDY 63 63 100 CALM 30.03R TC 17
WAUKEGAN CLEAR 63 61 93 SW7 29.99S TC 17
DUPAGE AIRPORT CLEAR 64 62 93 CALM 30.01S TC 18
KANKAKEE* PTCLDY 64 63 94 SW6 30.05S TC 18
WHEELING CLEAR 66 61 84 S3 30.02S TC 19
ROMEOVILLE* MOCLDY 64 64 100 S6 30.03S TC 18
LANSING* PTCLDY 61 59 93 CALM 30.03S TC 16
NORTHERLY ISL* N/A 69 59 70 SW3 N/A TC 21
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)
WINTHROP HARBOR 69 74 240/ 10/ 14 1015.3 1/ 3
WAUKEGAN HARBOR 70 74 250/ 10/ 14 1016.1 1/ 3
WILMETTE BUOY 71 250/ 14/ 17 1018.5F 1/ 2
CHICAGO BUOY 72 73 1015.1 1
HARRISON CRIB 73 240/ 14/ 15 N/A
NORTHERLY ISL 69 250/ 6/ 8 N/A
CALUMET HARBOR 67 200/ 5/ 7 1016.3F
MICHIGAN CITY 68 200/ 7/ 8 1015.1
MICH CITY BUOY 72 74 220/ 10/ 14 N/A 1/ 3
ST. JOSEPH BUOY 73 74 230/ 10/ 14 1016.8F 2/ 3
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 PTCLDY 65 63 93 S5 30.06F TC 18
GALESBURG* MOCLDY 64 64 100 CALM 30.06S TC 18
MACOMB* MOCLDY 62 62 100 SW3 30.08S TC 17
JACKSONVILLE* MOCLDY 62 62 100 CALM 30.08R TC 17
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 63 63 100 CALM 30.04S TC 17
BLOOMINGTON MOCLDY 64 64 100 SW5 30.07S TC 18
DECATUR PTCLDY 63 62 97 SW3 30.07R TC 17
PEORIA MOCLDY 66 64 93 SW3 30.05S TC 19
LACON* PTCLDY 64 63 94 CALM 30.03S TC 18
LINCOLN* PTCLDY 64 64 100 CALM 30.06R TC 18
SPRINGFIELD PTCLDY 63 63 100 SW3 30.07R TC 17
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 61 61 100 W3 30.06R TC 16
RANTOUL* PTCLDY 62 62 99 CALM 30.05S TC 17
MATTOON CLEAR 65 61 87 W3 30.06R TC 18
PARIS* CLEAR 62 61 97 CALM 30.06R TC 17
ILZ079-100>102-181000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 64 64 97 CALM 30.07S FOG TC 18
BELLEVILLE CLEAR 67 66 97 CALM 30.04S TC 20
CAHOKIA* CLEAR 66 65 96 CALM 30.06R TC 19
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 NOT AVBL
CAIRO* CLEAR 65 64 99 CALM 30.04F TC 18
EFFINGHAM* CLEAR 64 64 100 CALM 30.08R TC 18
MARION CLEAR 64 64 98 CALM 30.06S TC 18
MT. VERNON CLEAR 63 63 100 CALM 30.06S TC 17
CENTRALIA* N/A 64 64 97 CALM 30.06S FOG TC 18
SALEM* FOG 66 66 100 MISG 30.06S VSB 3/4 TC 19
METROPOLIS* PTCLDY 63 62 97 CALM 30.04F TC 17
ILZ067-068-072-073-078-083-087-091-181000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE N/A 65 64 97 NW6 30.04S TC 18
FLORA* CLEAR 66 64 94 NW5 30.06R TC 19
FAIRFIELD* CLEAR 63 63 99 CALM 30.06R TC 17
HARRISBURG* CLEAR 64 64 100 CALM 30.05S TC 18
ROBINSON* CLEAR 64 64 100 W3 30.04R TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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