018
ASUS43 KLOT 151709
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 PM 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.
ILZ001-002-007-009-015-016-024-151800-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 82 75 79 W8 30.02F HX 89 TC 28
STERLING* CLOUDY 76 76 100 VRB3 30.06F TC 24
SAVANNA* CLOUDY 75 74 95 S3 30.05F FOG TC 24
ILZ003-004-008-010-011-017-018-151800-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 74 73 97 S6 30.07S TC 23
FREEPORT* CLOUDY 74 72 95 SE3 30.08F TC 23
ROCHELLE* RAIN 73 71 94 CALM 30.08S TC 23
DE KALB* HVY RAIN 73 73 100 S8 30.09R TC 23
PERU* CLOUDY 79 75 89 S7 30.06F HX 82 TC 26
ILZ005-006-012>014-019>023-151800-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 75 71 87 S6 30.07R TC 24
CHICAGO-MIDWAY CLOUDY 76 72 87 S9 30.07R TC 24
AURORA LGT RAIN 74 73 97 SW5 30.07S FOG TC 23
JOLIET* LGT RAIN 77 76 98 SW3 30.08F TC 25
WAUKEGAN CLOUDY 76 72 87 SE10 30.06S TC 24
DUPAGE AIRPORT CLOUDY 74 72 93 S6 30.07R TC 23
KANKAKEE* CLOUDY 75 73 95 S8 30.11R TC 24
WHEELING CLOUDY 75 72 90 S10 30.08R TC 24
LANSING* N/A N/A N/A N/A MISG N/A
NORTHERLY ISL* N/A 74 71 91 SE8 N/A TC 23
LMZ740>746-151800-
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 74 74 100/ 10/ 16 1022.5R 2/ 4
WAUKEGAN HARBOR 74 74 100/ 12/ 16 1018.2F 2/ 3
WILMETTE BUOY 73 140/ 10/ 14 1021.1S 2/ 5
CHICAGO BUOY 74 73 1017.3R 2/ 3
HARRISON CRIB 75 150/ 13/ 16 N/A
NORTHERLY ISL 74 120/ 6/ 10 N/A
CALUMET HARBOR 74 130/ 5/ 9 1018.3
MICHIGAN CITY 75 110/ 6/ 8 1017.2F
MICH CITY BUOY 75 73 140/ 8/ 10 N/A 1/ 5
ST. JOSEPH BUOY 74 74 120/ 10/ 12 1019.4F 1/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-151800-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 83 75 77 S10 30.05S HX 90 TC 28
GALESBURG* PTSUNNY 81 76 85 S8 30.05F HX 87 TC 27
MACOMB* MOSUNNY 78 78 100 S6 30.06F HX 80 TC 26
JACKSONVILLE* PTSUNNY 80 76 87 SW10 30.07F HX 86 TC 27
ILZ028>032-037-038-041>044-048-051>054-059>061-151800-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTSUNNY 80 77 91 S6 30.09F HX 84 TC 26
BLOOMINGTON PTSUNNY 79 76 90 SW9 30.10F HX 83 TC 26
DECATUR PTSUNNY 80 72 76 SW7 30.10F HX 84 TC 27
PEORIA CLOUDY 78 76 93 S7 30.06F HX 81 TC 26
LACON* CLOUDY 78 73 86 S7 30.05F HX 80 TC 26
LINCOLN* MOSUNNY 82 75 79 S3 30.08F HX 89 TC 28
SPRINGFIELD PTSUNNY 82 74 76 S6 30.07F HX 88 TC 28
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-151800-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 80 73 79 SW8 30.10F HX 84 TC 27
RANTOUL* MOSUNNY 78 74 87 S5 30.11F HX 80 TC 25
MATTOON PTSUNNY 77 73 87 S7 30.11S TC 25
PARIS* PTSUNNY 78 75 90 S7 30.12S HX 81 TC 26
ILZ079-100>102-151800-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 82 73 74 SE9 30.10S HX 88 TC 28
CAHOKIA* CLOUDY 84 74 71 SE8 30.10S HX 91 TC 29
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-151800-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 90 73 58 E7 30.12F HX 98 TC 32
CAIRO* SUNNY 92 76 59 NW5 30.14S HX 104 TC 33
EFFINGHAM* PTSUNNY 81 77 88 SE3 30.12F HX 88 TC 27
MT. VERNON PTSUNNY 85 74 69 VRB6 30.12F HX 92 TC 29
CENTRALIA* PTSUNNY 86 74 66 SE9 30.11F HX 94 TC 30
SALEM* N/A 84 75 75 MISG 30.11F HX 92 TC 29
METROPOLIS* SUNNY 92 72 52 SW3 30.14S HX 100 TC 33
ILZ067-068-072-073-078-083-087-091-151800-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTSUNNY 84 74 71 SE8 30.12F HX 91 TC 29
FLORA* PTSUNNY 82 75 78 E3 30.12F HX 89 TC 28
FAIRFIELD* PTSUNNY 87 74 66 E7 30.12F HX 94 TC 30
HARRISBURG* PTSUNNY 86 77 74 NE3 30.14F HX 98 TC 30
ROBINSON* PTSUNNY 82 75 78 E8 30.11F HX 89 TC 28
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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