337
ASUS43 KLOT 182001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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.
ILZ001-002-007-009-015-016-024-182100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 80 70 71 SW10 29.94F HX 83 TC 27
STERLING* CLOUDY 75 68 78 VRB5 29.96F TC 24
SAVANNA* CLOUDY 77 67 70 S6 29.95S TC 25
ILZ003-004-008-010-011-017-018-182100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 77 68 73 SW8 29.97F TC 25
FREEPORT* CLOUDY 76 71 83 W6 29.98S TC 25
ILZ005-006-012>014-019>023-182100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 79 65 62 SW14G20 29.95F HX 81 TC 26
CHICAGO-MIDWAY CLOUDY 80 66 62 W13G21 29.96F HX 82 TC 27
AURORA CLOUDY 76 68 76 SW7 29.97F TC 24
WAUKEGAN CLOUDY 78 66 66 SW16 29.93F HX 80 TC 26
DUPAGE AIRPORT CLOUDY 77 67 71 SW13 29.97F TC 25
WHEELING PTSUNNY 79 65 62 W14G20 29.96F HX 81 TC 26
ROMEOVILLE* MOSUNNY 79 72 78 SW13 29.98F HX 82 TC 26
LANSING* PTSUNNY 79 65 62 SW13 29.99F HX 81 TC 26
NORTHERLY ISL* N/A 79 62 56 S7 N/A HX 80 TC 26
LMZ740>746-182100-
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 78 74 210/ 12/ 16 1013.6F 1
WAUKEGAN HARBOR 78 74 230/ 12/ 17 1014.6F 1
WILMETTE BUOY 77 230/ 10/ 14 1018.2S 1/ 2
CHICAGO BUOY 78 73 1013.8F 1
NORTHERLY ISL 79 180/ 8/ 12 N/A
CALUMET HARBOR 81 220/ 6/ 13 1015.1F
MICH CITY BUOY 77 75 210/ 2/ 4 N/A 1
ST. JOSEPH BUOY 75 74 230/ 6/ 8 1016.0F 1/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-182100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 80 69 69 S8 30.01F HX 83 TC 27
MACOMB* CLOUDY 79 73 81 SW9 30.02F HX 82 TC 26
ILZ028>032-037-038-041>044-048-051>054-059>061-182100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLOUDY 78 68 71 S9 30.02F HX 80 TC 26
DECATUR PTSUNNY 82 64 54 W9 30.02F HX 83 TC 28
PEORIA CLOUDY 79 67 66 SW14 29.99F HX 81 TC 26
SPRINGFIELD PTSUNNY 81 66 60 SW3 30.01F HX 83 TC 27
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-182100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 80 67 64 S8 30.02F HX 82 TC 27
MATTOON MOSUNNY 80 66 62 S7 30.02F HX 82 TC 27
ILZ079-100>102-182100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 84 66 54 W6 30.01F HX 86 TC 29
BELLEVILLE SUNNY 86 71 60 W7 29.99F HX 91 TC 30
CAHOKIA* MOSUNNY 86 65 49 SW3 30.00F HX 88 TC 30
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 86 66 51 S6 30.02F HX 88 TC 30
MT. VERNON SUNNY 87 66 49 SW5 30.03F HX 89 TC 31
SALEM* N/A 85 69 59 MISG 30.03F HX 88 TC 29
ILZ067-068-072-073-078-083-087-091-182100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 85 61 44 VRB5 30.03F HX 85 TC 29
FAIRFIELD* SUNNY 83 63 49 SE3 30.03F HX 84 TC 29
HARRISBURG* SUNNY 86 65 48 CALM 30.04F HX 87 TC 30
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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