201
ASUS43 KLOT 270508
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 AM CDT MON JUL 27 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.
ILZ001-002-007-009-015-016-024-270600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 79 78 97 CALM 29.82S HX 83 TC 26
STERLING* CLEAR 80 80 100 CALM 29.85R HX 89 TC 27
SAVANNA* CLOUDY 81 80 96 CALM 29.84R FOG HX 90
ILZ003-004-008-010-011-017-018-270600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLEAR 79 78 97 E3 29.85S HX 83 TC 26
FREEPORT* CLEAR 78 77 96 S3 29.86R HX 81 TC 26
ROCHELLE* MOCLDY 76 74 94 SE5 29.85S FOG TC 25
DE KALB* CLOUDY 78 78 100 S7 29.87S FOG TC 25
PERU* CLOUDY 79 79 100 S5 29.86R FOG HX 83
ILZ005-006-012>014-019>023-270600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 81 77 88 S8 29.84F HX 88 TC 27
CHICAGO-MIDWAY PTCLDY 80 77 90 S10 29.85F HX 87 TC 27
AURORA CLEAR N/A N/A N/A S3 29.85F FOG
JOLIET* CLEAR 79 79 100 CALM 29.86F FOG HX 83
WAUKEGAN CLEAR 78 76 93 SW6 29.83F HX 81 TC 26
DUPAGE AIRPORT CLEAR 78 77 96 S7 29.85F HX 81 TC 26
KANKAKEE* CLEAR 74 73 95 SE5 29.89S FOG TC 24
WHEELING CLEAR 82 78 88 SW6 29.85F HX 91 TC 28
ROMEOVILLE* PTCLDY 77 77 100 S8 29.86F FOG TC 25
LANSING* PTCLDY 76 75 96 SW5 29.87F FOG TC 25
NORTHERLY ISL* N/A 81 75 82 SW8 N/A HX 87 TC 27
LMZ740>746-270600-
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 73 70 1010.6 0
WAUKEGAN HARBOR 77 73 1011.5 0
WILMETTE BUOY 79 220/ 6/ 8 1013.7F 0
CHICAGO BUOY 79 75 220/ 6 1009.9 1
HARRISON CRIB 83 220/ 10/ 12 N/A
NORTHERLY ISL 82 220/ 6/ 9 N/A
CALUMET HARBOR 81 200/ 9/ 12 1011.1
BURNS HARBOR 1011.9F
MICHIGAN CITY 80 180/ 9/ 12 1009.2F
MICH CITY BUOY 77 75 200/ 8/ 10 N/A 1
ST. JOSEPH BUOY 77 76 180/ 6/ 8 1011.9F 0
ILZ025>027-034>036-040-047-049-050-058-095>099-270600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 83 79 88 SE5 29.87F HX 94 TC 28
GALESBURG* PTCLDY 81 78 92 S6 29.85S HX 90 TC 27
MACOMB* PTCLDY 82 82 100 CALM 29.87S HX 97 TC 28
JACKSONVILLE* PTCLDY 84 84 100 SW5 29.86F HX 104 TC 29
ILZ028>032-037-038-041>044-048-051>054-059>061-270600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 75 75 100 MISG 29.87S FOG TC 24
BLOOMINGTON PTCLDY 77 32 19 S8 29.89F FOG TC 25
DECATUR CLOUDY 79 78 97 S6 29.88F FOG HX 83
PEORIA PTCLDY 82 80 94 S6 29.85S HX 94 TC 28
LACON* PTCLDY 79 77 94 S3 29.85R FOG HX 84
LINCOLN* PTCLDY 81 81 100 S5 29.86F FOG HX 91
SPRINGFIELD PTCLDY 82 80 94 S5 29.86F HX 94 TC 28
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-270600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 75 75 100 SE6 29.89F FOG TC 24
DANVILLE* PTCLDY 74 73 98 CALM 29.91S TC 23
MATTOON PTCLDY 78 77 96 SE5 29.89S FOG HX 81
PARIS* FOG 72 71 98 CALM 29.90F VSB 1/2 TC 22
ILZ079-100>102-270600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 82 79 93 CALM 29.89S HX 92 TC 28
CAHOKIA* PTCLDY 82 79 90 CALM 29.87S HX 92 TC 28
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-270600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 80 75 84 S3 29.90F HX 85 TC 27
EFFINGHAM* CLOUDY 78 78 99 CALM 29.90F FOG HX 81
MARION CLEAR 82 81 98 SW7 29.89S HX 93 TC 28
MT. VERNON PTCLDY 75 74 96 CALM 29.89R TC 24
CENTRALIA* MOCLDY 79 76 91 CALM 29.89S HX 82 TC 26
SALEM* MOCLDY 78 74 86 MISG 29.88F HX 81 TC 26
METROPOLIS* CLEAR 77 70 78 SW5 29.89F TC 25
ILZ067-068-072-073-078-083-087-091-270600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
FLORA* MOCLDY 75 75 100 SE7 29.90R TC 24
FAIRFIELD* CLOUDY 75 71 87 E8 29.91R TC 24
HARRISBURG* PTCLDY 74 74 100 CALM 29.90R TC 24
ROBINSON* CLOUDY 75 75 100 SE5 29.90R FOG TC 24
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