207
ASUS43 KLOT 181310
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 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.
ILZ001-002-007-009-015-016-024-181400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 69 65 86 W3 30.03R TC 21
STERLING* CLOUDY 66 66 100 W3 30.04S TC 19
SAVANNA* CLOUDY 65 64 94 CALM 30.03R TC 19
ILZ003-004-008-010-011-017-018-181400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 65 63 93 S5 30.03R TC 18
FREEPORT* CLOUDY 67 65 95 CALM 30.04S TC 19
ROCHELLE* CLOUDY 64 63 94 CALM 30.04S TC 18
DE KALB* PTSUNNY 68 63 84 W7 30.04R TC 20
PERU* CLOUDY 68 66 94 SW5 30.04S TC 20
ILZ005-006-012>014-019>023-181400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 70 62 76 SW7 30.01S TC 21
CHICAGO-MIDWAY PTSUNNY 70 63 78 W5 30.02S TC 21
AURORA PTSUNNY 66 64 93 W3 30.03R TC 19
JOLIET* PTSUNNY 68 66 94 CALM 30.04R TC 20
WAUKEGAN MOSUNNY 68 63 84 W6 29.99F TC 20
DUPAGE AIRPORT PTSUNNY 67 64 90 SW3 30.02S TC 19
KANKAKEE* MOSUNNY 66 64 91 CALM 30.05S TC 19
WHEELING MOSUNNY 71 62 73 W3 30.02F TC 22
LANSING* MOSUNNY 67 63 85 W3 30.03F TC 20
NORTHERLY ISL* N/A 73 61 65 W3 N/A TC 23
LMZ740>746-181400-
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 70 74 230/ 10/ 14 1015.4 1
WAUKEGAN HARBOR 71 74 270/ 8/ 12 1016.2 1
WILMETTE BUOY 71 280/ 10/ 14 1018.9S 1/ 2
CHICAGO BUOY 74 73 1015.0 1
HARRISON CRIB 72 260/ 11/ 12 N/A
NORTHERLY ISL 71 260/ 3/ 8 N/A
CALUMET HARBOR 70 220/ 4/ 6 1016.4
MICHIGAN CITY 69 210/ 7/ 8 1015.1F
MICH CITY BUOY 71 74 240/ 10/ 14 N/A 2/ 3
ST. JOSEPH BUOY 73 74 230/ 10/ 12 1016.8F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-181400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 68 65 90 SW5 30.06R TC 20
GALESBURG* PTSUNNY 67 65 96 SW7 30.06R TC 19
MACOMB* PTSUNNY 67 67 100 W3 30.09R TC 19
JACKSONVILLE* PTSUNNY 67 67 100 CALM 30.06R TC 19
ILZ028>032-037-038-041>044-048-051>054-059>061-181400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTSUNNY N/A N/A N/A CALM 30.04F
BLOOMINGTON MOSUNNY 70 67 90 SW3 30.07S TC 21
DECATUR MOSUNNY 70 66 87 S3 30.06F TC 21
PEORIA PTSUNNY 67 66 97 S3 30.05R TC 19
LACON* PTSUNNY 67 65 92 CALM 30.03S TC 20
LINCOLN* MOSUNNY 68 68 100 CALM 30.06S TC 20
SPRINGFIELD MOSUNNY 69 66 90 CALM 30.05F TC 21
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 67 65 93 W5 30.07S TC 19
RANTOUL* SUNNY 67 65 93 W5 30.06F TC 19
MATTOON MOSUNNY 67 64 90 CALM 30.07S TC 19
PARIS* MOSUNNY 65 64 96 CALM 30.07S TC 19
ILZ079-100>102-181400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 70 66 88 CALM 30.07R TC 21
BELLEVILLE SUNNY 71 70 97 CALM 30.05R TC 22
CAHOKIA* SUNNY 70 68 93 CALM 30.06S TC 21
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 68 66 94 CALM 30.08R TC 20
CAIRO* SUNNY 72 70 95 CALM 30.09S TC 22
EFFINGHAM* SUNNY 68 68 99 CALM 30.09S TC 20
MT. VERNON SUNNY 67 66 97 CALM 30.08S TC 19
CENTRALIA* SUNNY 70 69 98 CALM 30.08R TC 21
SALEM* N/A 69 69 100 MISG 30.08R TC 21
METROPOLIS* SUNNY 71 69 94 CALM 30.09S TC 22
ILZ067-068-072-073-078-083-087-091-181400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 69 66 90 CALM 30.07R TC 21
FLORA* SUNNY 70 66 88 CALM 30.08S TC 21
FAIRFIELD* SUNNY 68 65 89 CALM 30.08R TC 20
HARRISBURG* SUNNY 69 68 96 CALM 30.09R TC 21
ROBINSON* SUNNY 68 66 94 VRB1 30.06S TC 20
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