450
ASUS43 KLOT 311901
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 PM CDT FRI JUL 31 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.
ILZ001-002-007-009-015-016-024-312000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE LGT RAIN 72 70 93 S9 29.79F FOG TC 22
STERLING* PTSUNNY 69 69 100 SE13G18 29.84F TC 21
SAVANNA* RAIN 68 67 94 SE10 29.83F TC 20
ILZ003-004-008-010-011-017-018-312000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 68 64 87 E7 29.90F TC 20
FREEPORT* CLOUDY 66 65 95 E13 29.90F TC 19
ILZ005-006-012>014-019>023-312000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE LGT RAIN 75 65 70 SE9 29.92F TC 24
CHICAGO-MIDWAY LGT RAIN 79 64 60 S13 29.93F HX 81 TC 26
AURORA LGT RAIN 71 67 87 SE9 29.92F FOG TC 22
JOLIET* LGT RAIN 74 70 86 SE5 29.93F TC 24
WAUKEGAN LGT RAIN 74 69 85 SE7 29.93F TC 23
DUPAGE AIRPORT LGT RAIN 73 68 84 SE7 29.92F TC 23
KANKAKEE* CLOUDY 76 64 67 SE7 29.95F TC 25
WHEELING LGT RAIN 76 65 68 S8 29.94F TC 24
LANSING* LGT RAIN 76 64 65 S8 29.95F TC 25
NORTHERLY ISL* N/A 78 62 57 S8 N/A HX 80 TC 26
LMZ740>746-312000-
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 72 100/ 10/ 12 1013.4F 1/ 3
WAUKEGAN HARBOR 73 70 150/ 10/ 14 1014.3F 1/ 3
WILMETTE BUOY 74 150/ 8/ 12 1017.1F 1/ 3
CHICAGO BUOY 77 72 1012.9F 1/ 2
HARRISON CRIB 78 180/ 15/ 16 N/A
NORTHERLY ISL 78 160/ 7/ 12 N/A
CALUMET HARBOR 79 150/ 10/ 13 1014.3
BURNS HARBOR 1014.9F
MICHIGAN CITY 79 190/ 8/ 9 1013.1F
MICH CITY BUOY 77 74 180/ 6/ 8 N/A 1
ST. JOSEPH BUOY 77 73 180/ 6/ 8 1015.6F 1
ILZ025>027-034>036-040-047-049-050-058-095>099-312000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTSUNNY 78 72 81 S10 29.82F HX 80 TC 26
MACOMB* CLOUDY 75 74 96 CALM 29.85F TC 24
ILZ028>032-037-038-041>044-048-051>054-059>061-312000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLOUDY 69 69 100 S13 29.94S FOG TC 21
DECATUR LGT RAIN 73 68 84 SW12 29.95S TC 23
PEORIA CLOUDY 71 69 93 S13G23 29.87F TC 22
LINCOLN* LGT RAIN 72 72 100 S10 29.91F TC 22
SPRINGFIELD RAIN 72 70 93 S10 29.89F FOG TC 22
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-312000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN LGT RAIN 72 67 84 SE7 29.96S TC 22
MATTOON LGT RAIN 76 65 68 S8 29.95F TC 24
ILZ079-100>102-312000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAHOKIA* PTSUNNY 75 73 93 SE8 29.89F TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-312000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE LGT RAIN 72 70 94 SE7 29.93F TC 22
EFFINGHAM* DRIZZLE 75 70 84 S5 29.97S TC 24
MT. VERNON LGT RAIN 72 70 93 SW9 29.95F TC 22
CENTRALIA* LGT RAIN 73 70 92 S9 29.94F TC 23
SALEM* LGT RAIN 74 70 87 MISG 29.95S TC 24
ILZ067-068-072-073-078-083-087-091-312000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTSUNNY 80 65 59 S9 29.95F HX 82 TC 27
FAIRFIELD* LGT RAIN 77 68 74 SE5 29.95F TC 25
HARRISBURG* RAIN 72 72 98 CALM 29.96F TC 22
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