257
ASUS43 KLOT 172110
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 PM CDT MON AUG 17 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.
ILZ001-002-007-009-015-016-024-172200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 82 63 52 NW12 30.04F HX 83 TC 28
STERLING* CLOUDY 82 60 47 NW5 30.05F HX 82 TC 28
SAVANNA* MOSUNNY 83 58 42 NW9 30.05F HX 82 TC 28
ILZ003-004-008-010-011-017-018-172200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOSUNNY 81 58 45 W10 30.04F HX 81 TC 27
FREEPORT* PTSUNNY 78 61 55 NW5 30.06F HX 80 TC 26
ROCHELLE* MOSUNNY 79 57 47 NW6 30.05F HX 80 TC 26
DE KALB* MOSUNNY 76 62 62 N6 30.05F TC 24
PERU* SUNNY 81 61 50 NW7 30.04F HX 81 TC 27
ILZ005-006-012>014-019>023-172200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 78 62 57 NE8 30.01F HX 80 TC 26
CHICAGO-MIDWAY PTSUNNY 77 62 59 NE9 30.01F TC 25
AURORA SUNNY 79 60 52 NW10 30.02F HX 80 TC 26
JOLIET* MOSUNNY 82 60 48 W7 30.02F HX 82 TC 28
WAUKEGAN PTSUNNY 74 63 68 SE7 30.02S TC 23
DUPAGE AIRPORT MOSUNNY 80 57 45 NW8 30.02F HX 80 TC 27
KANKAKEE* CLOUDY 79 65 62 N5 30.03F HX 80 TC 26
WHEELING PTSUNNY 77 62 59 CALM 30.03F TC 25
ROMEOVILLE* MOSUNNY 81 63 54 NW6G13 30.02F HX 82 TC 27
LANSING* MOSUNNY 76 61 58 N10 30.03F TC 25
NORTHERLY ISL* N/A 75 63 66 NE6 N/A TC 24
LMZ740>746-172200-
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 75 100/ 4/ 6 1016.3 2/ 7
WAUKEGAN HARBOR 73 75 80/ 6/ 8 1017.3 1/ 4
WILMETTE BUOY 73 90/ 6/ 8 1020.2F 2/ 5
CHICAGO BUOY 73 74 1015.8 2/ 5
HARRISON CRIB 72 30/ 6/ 7 N/A
NORTHERLY ISL 75 40/ 6/ 10 N/A
CALUMET HARBOR 74 10/ 6/ 9 1017.2
MICHIGAN CITY 75 10/ 6/ 8 1015.4F
MICH CITY BUOY 72 74 360/ 10/ 12 N/A 2/ 5
ST. JOSEPH BUOY 72 75 350/ 12/ 16 1017.4F 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-172200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY SUNNY 80 63 55 NW8 30.07F HX 81 TC 27
GALESBURG* MOSUNNY 80 65 61 NW7 30.07F HX 82 TC 27
MACOMB* PTSUNNY 80 65 59 N6 30.08F HX 82 TC 27
JACKSONVILLE* MOSUNNY 81 65 58 NW8 30.05F HX 83 TC 27
ILZ028>032-037-038-041>044-048-051>054-059>061-172200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOSUNNY 80 65 60 NW7 30.03F HX 82 TC 27
BLOOMINGTON MOSUNNY 80 61 52 NW16 30.06F HX 81 TC 27
DECATUR MOSUNNY 80 60 50 N9 30.05F HX 81 TC 27
PEORIA MOSUNNY 81 60 48 N7 30.05F HX 82 TC 27
LACON* SUNNY 80 60 50 NW8 30.04F HX 80 TC 26
LINCOLN* MOSUNNY 81 64 56 N6 30.05F HX 82 TC 27
SPRINGFIELD MOSUNNY 82 64 54 NW7 30.05F HX 83 TC 28
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-172200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 79 65 62 NW9 30.03F HX 81 TC 26
RANTOUL* PTSUNNY 78 66 65 NW9 30.03S HX 80 TC 26
MATTOON MOSUNNY 80 64 58 NW14G23 30.02F HX 82 TC 27
PARIS* MOSUNNY 81 65 58 NW8 30.01F HX 83 TC 27
ILZ079-100>102-172200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOSUNNY 82 64 54 NW13 30.05F HX 84 TC 28
BELLEVILLE MOSUNNY 82 68 63 NW7 30.03F HX 85 TC 28
CAHOKIA* MOSUNNY 81 65 58 N10 30.04F HX 83 TC 27
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-172200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE MOSUNNY 84 70 61 N15 30.03F HX 88 TC 29
CAIRO* SUNNY 88 73 61 N14 30.02F HX 96 TC 31
EFFINGHAM* PTSUNNY 79 66 64 NW9 30.04F HX 81 TC 26
MARION PTSUNNY 84 70 61 NW10 30.03F HX 88 TC 29
MT. VERNON PTSUNNY 84 66 54 VRB6 30.04F HX 86 TC 29
CENTRALIA* MOSUNNY 82 65 56 NW8 30.04F HX 84 TC 28
SALEM* N/A 81 68 65 MISG 30.04F HX 84 TC 27
METROPOLIS* MOSUNNY 87 71 58 NW12 30.01F HX 92 TC 31
ILZ067-068-072-073-078-083-087-091-172200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 81 65 58 NW17 30.00S HX 83 TC 27
FLORA* MOSUNNY 82 68 61 NW12 30.03F HX 85 TC 28
FAIRFIELD* PTSUNNY 81 65 59 NW7 30.03S HX 82 TC 27
HARRISBURG* SUNNY 84 71 65 N9 30.02S HX 89 TC 29
ROBINSON* MOSUNNY 81 68 65 NW7 30.00F HX 83 TC 27
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