203
ASUS43 KLOT 180312
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 PM CDT MON AUG 17 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.
ILZ001-002-007-009-015-016-024-180400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 67 65 93 CALM 30.02S TC 19
STERLING* CLEAR 69 65 86 SW3 30.03S TC 21
SAVANNA* CLEAR 67 62 85 CALM 30.02S TC 20
ILZ003-004-008-010-011-017-018-180400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLEAR 66 63 90 CALM 30.02R TC 19
FREEPORT* CLEAR 68 65 92 W3 30.04R TC 20
ROCHELLE* CLEAR 64 62 94 CALM 30.03S FOG TC 18
DE KALB* CLEAR 69 62 76 SW5 30.03F TC 21
PERU* PTCLDY 70 64 83 SW3 30.03S TC 21
ILZ005-006-012>014-019>023-180400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 71 57 61 S7 30.00S TC 22
CHICAGO-MIDWAY PTCLDY 72 58 61 S5 30.01R TC 22
AURORA PTCLDY 67 64 90 CALM 30.02R TC 19
JOLIET* PTCLDY 68 67 97 CALM 30.02S TC 20
WAUKEGAN CLEAR 66 59 78 SW3 29.99S TC 19
DUPAGE AIRPORT PTCLDY 68 62 81 SW3 30.01R TC 20
KANKAKEE* PTCLDY 66 64 94 CALM 30.04S TC 19
WHEELING PTCLDY 69 60 73 S3 30.01S TC 21
ROMEOVILLE* PTCLDY 68 66 94 SE7 30.03S TC 20
LANSING* PTCLDY 64 61 89 S3 30.03R TC 18
NORTHERLY ISL* N/A 71 58 63 S5 N/A TC 22
LMZ740>746-180400-
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 73 74 190/ 6/ 10 1015.4 1/ 5
WAUKEGAN HARBOR 74 75 200/ 8/ 10 1016.3 1/ 5
WILMETTE BUOY 74 210/ 8/ 10 1018.9S 1/ 5
CHICAGO BUOY 74 74 1015.2 1/ 4
HARRISON CRIB 74 200/ 7/ 8 N/A
NORTHERLY ISL 70 190/ 2/ 4 N/A
CALUMET HARBOR 71 180/ 1/ 1 1016.4
MICHIGAN CITY 70 150/ 4/ 4 1014.8R
MICH CITY BUOY 73 74 210/ 4/ 6 N/A 2/ 5
ST. JOSEPH BUOY 73 75 CALM / 2 1016.7S 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-180400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 71 66 84 CALM 30.06R TC 22
GALESBURG* CLEAR 67 67 100 CALM 30.05S TC 19
MACOMB* PTCLDY 65 65 100 W3 30.07R TC 19
JACKSONVILLE* PTCLDY 67 67 100 CALM 30.06R TC 20
ILZ028>032-037-038-041>044-048-051>054-059>061-180400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 66 66 99 CALM 30.04R TC 19
BLOOMINGTON PTCLDY 71 63 75 NW5 30.06R TC 22
DECATUR PTCLDY 69 62 78 CALM 30.06R TC 21
PEORIA PTCLDY 70 66 87 CALM 30.04R TC 21
LACON* PTCLDY 66 63 89 CALM 30.03R TC 19
LINCOLN* PTCLDY 70 68 93 CALM 30.05R TC 21
SPRINGFIELD PTCLDY 67 66 97 S3 30.05R TC 19
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-180400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 68 64 87 N3 30.05R TC 20
RANTOUL* PTCLDY 66 65 95 CALM 30.05R TC 19
MATTOON PTCLDY 68 64 87 W5 30.05R TC 20
PARIS* MOCLDY 69 68 95 CALM 30.05R TC 21
ILZ079-100>102-180400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 70 68 94 CALM 30.07R TC 21
BELLEVILLE PTCLDY 72 71 97 NW3 30.04R TC 22
CAHOKIA* PTCLDY 70 68 93 CALM 30.06R TC 21
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* PTCLDY 72 71 96 CALM 30.06R TC 22
EFFINGHAM* PTCLDY 67 67 100 CALM 30.06S TC 20
MARION PTCLDY 69 68 96 CALM 30.07R TC 21
MT. VERNON MOCLDY 69 67 93 CALM 30.07R TC 21
CENTRALIA* PTCLDY 69 68 97 CALM 30.07R TC 21
SALEM* N/A 70 69 97 MISG 30.06R TC 21
METROPOLIS* PTCLDY 70 69 97 CALM 30.07R TC 21
ILZ067-068-072-073-078-083-087-091-180400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 71 66 84 W5 30.03R TC 22
FLORA* MOCLDY 70 66 88 CALM 30.05R TC 21
FAIRFIELD* MOCLDY 69 66 92 CALM 30.05R TC 20
HARRISBURG* PTCLDY 69 67 96 CALM 30.06R TC 20
ROBINSON* PTCLDY 68 66 94 NW5 30.03R TC 20
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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