850
ASUS43 KLOT 270810
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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.
ILZ001-002-007-009-015-016-024-270900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 80 78 94 CALM 29.80F HX 88 TC 27
STERLING* CLOUDY 78 78 100 VRB3 29.83F HX 81 TC 26
SAVANNA* FOG 77 76 98 CALM 29.82S VSB 1/4 TC 25
ILZ003-004-008-010-011-017-018-270900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD FOG 79 78 97 S5 29.84F VSB 1/8 HX 83
FREEPORT* CLOUDY 79 77 95 S3 29.85R VSB 3/4 HX 83
ROCHELLE* FOG 78 76 94 S5 29.85S VSB 1/4 HX 81
DE KALB* FOG 78 78 100 S6 29.87S VSB 1/4 HX 80
PERU* FOG 79 79 100 S3 29.84F VSB 1/4 HX 83
ILZ005-006-012>014-019>023-270900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 79 77 94 SW9 29.83R FOG HX 83
CHICAGO-MIDWAY MOCLDY 78 76 93 SW10 29.84S HX 81 TC 26
AURORA FOG N/A N/A N/A SW6 29.85S VSB 1/4
JOLIET* CLOUDY 78 78 100 SW3 29.86S FOG HX 81
WAUKEGAN CLOUDY 78 78 100 SW7 29.82S FOG HX 81
DUPAGE AIRPORT CLOUDY 78 78 100 SW8 29.85R FOG HX 81
KANKAKEE* CLEAR 74 73 95 CALM 29.87R FOG TC 24
WHEELING CLOUDY 80 78 94 SW6 29.85R HX 88 TC 27
ROMEOVILLE* CLOUDY 77 77 100 S6 29.86S FOG TC 25
LANSING* PTCLDY 74 74 100 SW6 29.86R FOG TC 24
NORTHERLY ISL* N/A 78 74 87 SW6 N/A HX 81 TC 26
LMZ740>746-270900-
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 76 70 1010.2 0
WAUKEGAN HARBOR 78 72 1011.1 1
WILMETTE BUOY 78 220/ 8/ 12 1013.3R 1
CHICAGO BUOY 78 74 240/ 8 1009.5 1
HARRISON CRIB 80 210/ 13/ 14 N/A
NORTHERLY ISL 79 200/ 7 N/A
CALUMET HARBOR 78 200/ 6/ 9 1010.3
BURNS HARBOR 1010.8F
MICHIGAN CITY 77 170/ 9/ 13 1008.4F
MICH CITY BUOY 76 75 200/ 6/ 8 N/A 1
ST. JOSEPH BUOY 75 74 170/ 6/ 6 1011.2S 1
ILZ025>027-034>036-040-047-049-050-058-095>099-270900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 79 77 94 S5 29.84F HX 83 TC 26
GALESBURG* PTCLDY 78 78 100 CALM 29.84F FOG HX 80
MACOMB* CLEAR 79 79 100 CALM 29.85S HX 83 TC 26
JACKSONVILLE* CLEAR 82 82 100 SW6 29.83S HX 94 TC 28
ILZ028>032-037-038-041>044-048-051>054-059>061-270900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 75 75 100 MISG 29.86S FOG TC 24
BLOOMINGTON FOG 77 77 100 SE7 29.87F VSB 1/4 TC 25
DECATUR CLOUDY 78 77 96 SE5 29.86 FOG HX 81
PEORIA MOCLDY 80 79 96 SE3 29.84S FOG HX 88
LACON* PTCLDY 78 76 94 CALM 29.83S FOG HX 80
LINCOLN* PTCLDY 79 79 100 SE3 29.85S FOG HX 84
SPRINGFIELD CLEAR 77 75 93 SE3 29.84S TC 25
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-270900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 74 74 100 S5 29.87R FOG TC 23
DANVILLE* CLOUDY 71 70 98 CALM 29.88R VSB<1/4 TC 22
MATTOON PTCLDY 77 76 96 SE5 29.86S FOG TC 25
PARIS* FOG 71 70 98 SE5 29.87S THUNDER VSB 1/2
ILZ079-100>102-270900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 82 79 89 W3 29.85R HX 93 TC 28
BELLEVILLE CLOUDY 84 82 93 SW6 29.83S FOG HX 100
CAHOKIA* MOCLDY 82 78 88 SW3 29.84F HX 91 TC 28
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-270900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* MOCLDY 78 73 84 SE10 29.95R HX 81 TC 26
EFFINGHAM* HVY RAIN 76 71 86 N18G29 29.90R TC 24
MARION MOCLDY 76 72 85 E20 29.99R TC 25
MT. VERNON CLOUDY 73 70 88 S13G21 29.93F TC 23
CENTRALIA* MOCLDY 77 72 86 SE15G29 29.91R TC 25
SALEM* CLOUDY 77 73 87 MISG 29.91R TC 25
METROPOLIS* MOCLDY 74 70 88 CALM 29.97R TC 23
ILZ067-068-072-073-078-083-087-091-270900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
FAIRFIELD* CLOUDY 71 68 90 CALM 29.93F TC 22
HARRISBURG* CLOUDY 69 69 100 E13G20 30.01R TC 21
ROBINSON* CLOUDY 72 72 100 CALM 29.88S 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