999
ASUS43 KLOT 150910
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 AM CDT SAT AUG 15 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.
ILZ001-002-007-009-015-016-024-151000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 73 72 96 SE9 30.04R TC 23
STERLING* CLOUDY 72 72 100 E3 30.08R FOG TC 22
SAVANNA* CLOUDY 71 69 92 NE6 30.07S TC 22
ILZ003-004-008-010-011-017-018-151000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 70 65 84 CALM 30.10R TC 21
FREEPORT* CLOUDY 69 67 94 E3 30.11S TC 21
ROCHELLE* CLOUDY 70 67 91 E3 30.09S TC 21
DE KALB* CLOUDY 69 69 100 E5 30.10S TC 21
PERU* LGT RAIN 73 73 100 SE5 30.06F TC 23
ILZ005-006-012>014-019>023-151000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 73 69 87 CALM 30.09R TC 23
CHICAGO-MIDWAY CLOUDY 73 70 90 CALM 30.08S TC 23
AURORA CLOUDY 71 69 93 SE6 30.08F TC 22
JOLIET* CLOUDY 73 73 99 CALM 30.09F FOG TC 23
WAUKEGAN CLOUDY 73 68 84 E7 30.09R TC 23
DUPAGE AIRPORT CLOUDY 71 68 90 E5 30.08F TC 22
KANKAKEE* CLOUDY 72 70 95 SE3 30.09F TC 22
WHEELING CLOUDY 73 69 87 S3 30.10S TC 23
ROMEOVILLE* CLOUDY 72 72 100 NE3 30.10S TC 22
LANSING* N/A N/A N/A N/A MISG N/A
NORTHERLY ISL* N/A 73 69 87 S2 N/A TC 23
LMZ740>746-151000-
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 75 74 60/ 14/ 17 1017.9 3/ 5
WAUKEGAN HARBOR 75 74 60/ 12/ 16 1019.0 2/ 5
WILMETTE BUOY 74 140/ 8/ 14 1021.6F 3/ 5
CHICAGO BUOY 74 73 1018.0 2/ 5
HARRISON CRIB 74 190/ 7/ 8 N/A
NORTHERLY ISL 72 170/ 2/ 5 N/A
CALUMET HARBOR 73 170/ 2/ 3 1019.0
MICHIGAN CITY 74 200/ 4/ 5 1017.7R
MICH CITY BUOY 73 73 160/ 4/ 6 N/A 2/ 5
ST. JOSEPH BUOY 74 75 110/ 8/ 10 1019.7S 1/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-151000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY TSTM 73 72 96 NE5 30.04S FOG TC 23
GALESBURG* HVY RAIN 72 72 100 S7 30.08S TC 22
MACOMB* LGT RAIN 72 72 100 SE7 30.10R TC 22
JACKSONVILLE* CLOUDY 74 74 100 E17G26 30.01F THUNDER TC 23
ILZ028>032-037-038-041>044-048-051>054-059>061-151000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 72 72 100 S5 30.08F TC 22
BLOOMINGTON CLOUDY 71 N/A N/A S7 30.12R THUNDER TC 22
DECATUR MOCLDY 74 72 93 E7 30.06F TC 23
PEORIA LGT RAIN 71 71 100 S6 30.06S FOG TC 22
LACON* RAIN 73 70 92 SE5 30.06R TC 23
LINCOLN* CLOUDY 74 74 100 N13 30.07R TC 24
SPRINGFIELD CLOUDY 74 73 97 N9 30.05R TC 23
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-151000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN TSTM 73 71 93 NE14G23 30.10S TC 23
MATTOON MOCLDY 75 72 90 SE7 30.06S TC 24
PARIS* MOCLDY 72 72 98 E5 30.08R THUNDER TC 22
ILZ079-100>102-151000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 77 75 94 CALM 30.01F TC 25
BELLEVILLE CLEAR 78 77 97 S5 30.00R HX 80 TC 25
CAHOKIA* CLEAR 76 74 93 SE5 30.00S TC 24
SPARTA* CLEAR 81 73 78 S8 30.05 HX 85 TC 27
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-151000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 80 76 85 CALM 30.07S HX 86 TC 27
EFFINGHAM* PTCLDY 74 74 99 CALM 30.08R TC 24
MARION CLEAR 77 77 98 SW6 30.06S TC 25
MT. VERNON CLEAR 78 76 93 CALM 30.05F HX 81 TC 26
CENTRALIA* CLEAR 80 74 83 SE5 30.04S HX 84 TC 27
SALEM* N/A 78 78 98 MISG 30.05R HX 81 TC 26
METROPOLIS* CLEAR 77 76 98 CALM 30.08R TC 25
ILZ067-068-072-073-078-083-087-091-151000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 76 73 91 E3 30.06S TC 24
FLORA* CLEAR 75 N/A N/A CALM 30.06R TC 24
FAIRFIELD* CLEAR 76 75 95 S5 30.04F TC 25
HARRISBURG* CLEAR 74 74 99 CALM 30.07S TC 24
ROBINSON* MOCLDY 73 73 100 NE3 30.06S FOG TC 23
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