169
ASUS43 KLOT 190210
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 PM 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.
ILZ001-002-007-009-015-016-024-190300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 74 69 85 W5 29.92R TC 23
STERLING* CLOUDY 74 72 93 SW10 29.92S TC 23
SAVANNA* MOCLDY 69 66 91 S3 29.91F TC 21
ILZ003-004-008-010-011-017-018-190300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD LGT RAIN 70 64 81 N10 29.95R TC 21
FREEPORT* CLOUDY 70 67 90 CALM 29.95R TC 21
ROCHELLE* MOCLDY 70 68 94 CALM 29.93S TC 21
DE KALB* CLOUDY 71 70 96 SW3 29.94S TC 22
PERU* CLOUDY 75 70 83 SW5 29.93R TC 24
ILZ005-006-012>014-019>023-190300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 76 67 73 SW6 29.91R TC 24
CHICAGO-MIDWAY MOCLDY 76 67 73 SW9 29.92R TC 24
AURORA MOCLDY 73 69 87 CALM 29.92R TC 23
JOLIET* MOCLDY 75 70 83 SW3 29.92S TC 24
WAUKEGAN TSTM 64 63 96 W9 29.94R VSB 1 TC 18
DUPAGE AIRPORT CLOUDY 74 68 81 SW6 29.92R TC 23
KANKAKEE* MOCLDY 71 69 94 CALM 29.96R TC 22
WHEELING CLOUDY 76 68 76 W3 29.94R TC 24
ROMEOVILLE* PTCLDY 75 70 83 SW6 29.93R TC 24
LANSING* CLOUDY 72 67 86 CALM 29.93S TC 22
NORTHERLY ISL* N/A 76 65 68 S6 N/A TC 24
LMZ740>746-190300-
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 66 74 N/A 1/ 3
WAUKEGAN HARBOR 66 74 N/A 1
WILMETTE BUOY 76 270/ 6/ 8 1016.2R 1
CHICAGO BUOY 76 73 1012.0 1/ 2
NORTHERLY ISL 76 220/ 5/ 10 N/A
CALUMET HARBOR 76 200/ 7/ 10 1013.1
MICH CITY BUOY 74 74 190/ 8/ 10 N/A 1/ 3
ST. JOSEPH BUOY 75 74 200/ 10/ 12 1014.0F 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-190300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 75 69 81 CALM 29.95R TC 24
GALESBURG* CLEAR 72 70 95 SW5 29.96R TC 22
MACOMB* CLEAR 71 71 100 SW5 29.97S TC 22
JACKSONVILLE* CLEAR 71 71 100 CALM 29.95S TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-190300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOCLDY 73 71 92 CALM 29.96R TC 23
BLOOMINGTON CLEAR 73 70 90 SW6 29.97R TC 23
DECATUR CLEAR 74 68 81 SW6 29.96R TC 23
PEORIA CLEAR 75 69 81 SW7 29.95R TC 24
LACON* CLEAR 73 68 84 SW3 29.93S TC 23
LINCOLN* CLEAR 75 69 80 CALM 29.95S TC 24
SPRINGFIELD CLEAR 73 69 87 SW3 29.95S TC 23
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-190300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 71 69 93 S5 29.96S TC 22
RANTOUL* CLEAR 70 68 93 CALM 29.96S TC 21
MATTOON CLEAR 74 69 85 S3 29.96S TC 23
PARIS* PTCLDY 69 68 97 CALM 29.97S TC 21
ILZ079-100>102-190300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 73 70 88 SE6 29.95F TC 23
BELLEVILLE PTCLDY 77 74 91 CALM 29.93F TC 25
CAHOKIA* CLEAR 77 71 82 S5 29.94S TC 25
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-190300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 75 70 83 SE6 29.97R TC 24
CAIRO* CLEAR 75 72 89 CALM 29.98R TC 24
EFFINGHAM* CLEAR 72 72 100 CALM 29.99R TC 22
MARION CLEAR 76 67 73 CALM 29.98S TC 25
MT. VERNON CLEAR 72 69 90 CALM 29.97R TC 22
CENTRALIA* CLEAR 72 71 94 CALM 29.97S TC 22
SALEM* N/A 73 70 92 MISG 29.97S TC 23
METROPOLIS* CLEAR 72 69 91 CALM 29.99R TC 22
ILZ067-068-072-073-078-083-087-091-190300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 75 67 76 CALM 29.96S TC 24
FLORA* CLEAR 73 72 94 CALM 29.97R TC 23
FAIRFIELD* CLEAR 73 67 84 CALM 29.97R TC 23
HARRISBURG* CLEAR 74 71 87 CALM 29.98R TC 24
ROBINSON* CLEAR 70 70 100 SE2 29.96S TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page