Regional Weather Roundup
Issued by NWS
Issued by NWS
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811
ASUS43 KLOT 210156
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 PM CDT MON JUL 20 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-210300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 75 72 90 SW8 29.75S TC 24
$$
ILZ003-004-008-010-011-017-018-210300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD NOT AVBL
$$
ILZ005-006-012>014-019>023-210300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 78 68 71 SW12G24 29.70F HAZE HX 80
CHICAGO-MIDWAY NOT AVBL
AURORA CLOUDY N/A N/A N/A SW7 29.72F SMOKE
WAUKEGAN PTCLDY 75 69 81 SW12 29.68F TC 24
DUPAGE AIRPORT CLOUDY 74 70 87 SW10 29.71F TC 23
WHEELING MOCLDY 78 69 73 SW9 29.72F HX 80 TC 26
NORTHERLY ISL* N/A 78 66 66 S9 N/A HX 80 TC 26
$$
LMZ740>746-210300-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 78 75 1006.6R 2/ 4
WAUKEGAN HARBOR 78 74 1007.3F 2/ 4
WILMETTE BUOY 79 210/ 16/ 21 1009.1F 2/ 4
CHICAGO BUOY 79 75 220/ 12/ 17 1005.4F 1/ 3
HARRISON CRIB 80 220/ 16/ 20 N/A
NORTHERLY ISL 79 220/ 8/ 18 N/A
CALUMET HARBOR 200/ 12/ 18 1006.9
BURNS HARBOR 1007.8F
MICHIGAN CITY 78 190/ 9/ 12 1005.6S
MICH CITY BUOY 77 76 210/ 14/ 17 N/A 1/ 3
ST. JOSEPH BUOY 76 74 190/ 12/ 14 1008.1F 2/ 3
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-210300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-210300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PEORIA NOT AVBL
SPRINGFIELD CLOUDY 79 75 87 CALM 29.87R HX 83 TC 26
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-210300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
$$
ILZ079-100>102-210300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 82 75 78 S6 29.84R HX 89 TC 28
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
$$
ILZ067-068-072-073-078-083-087-091-210300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$