411
ASUS43 KLOT 171812
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 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.
ILZ001-002-007-009-015-016-024-171900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 80 61 52 NW8 30.07F HX 81 TC 27
6HR MIN TEMP: 64; 6HR MAX TEMP: 81;
STERLING* PTSUNNY 80 61 52 NW8 30.08S HX 81 TC 27
SAVANNA* SUNNY 80 58 46 W8 30.08S HX 81 TC 27
ILZ003-004-008-010-011-017-018-171900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOSUNNY 77 58 51 NW12 30.08R TC 25
6HR MIN TEMP: 64; 6HR MAX TEMP: 79;
FREEPORT* CLOUDY 77 61 57 N6 30.10S TC 25
ROCHELLE* MOSUNNY 76 59 55 N9 30.08S TC 25
DE KALB* MOSUNNY 77 61 57 N12 30.08S TC 25
PERU* PTSUNNY 79 61 53 NW6 30.07S HX 80 TC 26
ILZ005-006-012>014-019>023-171900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 74 63 68 NE7 30.03F TC 23
6HR MIN TEMP: 69; 6HR MAX TEMP: 76; 6HR PCP: TRACE;
CHICAGO-MIDWAY PTSUNNY 77 64 64 NE5 30.03F TC 25
6HR MIN TEMP: 67; 6HR MAX TEMP: 77;
AURORA MOSUNNY 78 63 59 NW8 30.04F HX 80 TC 26
6HR MIN TEMP: 63; 6HR MAX TEMP: 78;
JOLIET* PTSUNNY 78 67 66 N7 30.04F HX 80 TC 26
WAUKEGAN PTSUNNY 73 63 70 NE8 30.04F TC 23
6HR MIN TEMP: 67; 6HR MAX TEMP: 75;
DUPAGE AIRPORT MOSUNNY 78 61 55 NW10 30.04F HX 80 TC 26
6HR MIN TEMP: 67; 6HR MAX TEMP: 78;
KANKAKEE* PTSUNNY 78 66 67 NE12G17 30.04S HX 80 TC 25
WHEELING PTSUNNY 75 64 68 E8 30.05F TC 24
6HR MIN TEMP: 67; 6HR MAX TEMP: 76;
LANSING* CLOUDY 76 65 69 N12 30.05S TC 24
LMZ740>746-171900-
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 72 74 40/ 8/ 10 1017.0 2/ 4
WAUKEGAN HARBOR 72 74 20/ 8/ 12 1017.7 2/ 5
WILMETTE BUOY 72 70/ 8/ 14 1020.4F 3/ 5
CHICAGO BUOY 72 73 1016.3 3/ 5
HARRISON CRIB 72 30/ 11/ 12 N/A
CALUMET HARBOR 74 340/ 8/ 13 1017.7
MICHIGAN CITY 72 360/ 12/ 13 1016.0R
MICH CITY BUOY 71 74 360/ 10/ 16 N/A 3/ 4
ST. JOSEPH BUOY 71 75 350/ 12/ 16 1018.0R 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-171900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 79 65 62 N10 30.10F HX 81 TC 26
GALESBURG* PTSUNNY 78 67 67 NW9 30.10F HX 80 TC 26
MACOMB* MOSUNNY 79 67 65 N8 30.12S HX 81 TC 26
JACKSONVILLE* PTSUNNY 79 65 62 NW7 30.09F HX 80 TC 26
ILZ028>032-037-038-041>044-048-051>054-059>061-171900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTSUNNY 78 68 71 NW10 30.05F HX 80 TC 26
BLOOMINGTON MOSUNNY 79 64 60 N14 30.08S HX 81 TC 26
DECATUR MOSUNNY 79 63 57 N15G23 30.06F HX 80 TC 26
PEORIA MOSUNNY 77 60 55 VRB7 30.08S TC 25
6HR MIN TEMP: 66; 6HR MAX TEMP: 79;
LACON* MOSUNNY 78 59 52 N8 30.06F TC 26
LINCOLN* MOSUNNY 80 65 59 NW6 30.07F HX 82 TC 27
SPRINGFIELD SUNNY 80 62 54 N15 30.07F HX 81 TC 27
6HR MIN TEMP: 68; 6HR MAX TEMP: 80;
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-171900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 77 67 71 NW14 30.04F TC 25
MATTOON PTSUNNY 78 65 63 N14G21 30.04S HX 80 TC 26
PARIS* PTSUNNY 79 67 68 NW10 30.03F HX 81 TC 26
ILZ079-100>102-171900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOSUNNY 81 66 61 NW12 30.09S HX 83 TC 27
BELLEVILLE PTSUNNY 83 72 70 NW10 30.05S HX 88 TC 28
CAHOKIA* PTSUNNY 81 67 62 N13 30.07S HX 83 TC 27
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-171900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* MOSUNNY 86 75 68 NW8 30.03F HX 95 TC 30
MT. VERNON PTSUNNY 83 70 64 VRB7 30.04S HX 87 TC 28
CENTRALIA* PTSUNNY 81 68 65 NW12 30.05F HX 83 TC 27
SALEM* N/A 82 69 66 MISG 30.05F HX 85 TC 28
METROPOLIS* CLOUDY 85 71 62 NW6 30.03F HX 90 TC 30
ILZ067-068-072-073-078-083-087-091-171900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 84 72 67 NW13 30.00F HX 89 TC 29
FLORA* MOSUNNY 81 72 74 N12G17 30.03F HX 84 TC 27
FAIRFIELD* MOSUNNY 83 71 65 NW6 30.02F HX 88 TC 29
HARRISBURG* CLOUDY 85 74 69 N7 30.03F HX 92 TC 29
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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