401
ASUS43 KLOT 151808
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 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.
ILZ001-002-007-009-015-016-024-151900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 82 75 79 SW5 30.01F HX 89 TC 28
6HR MIN TEMP: 73; 6HR MAX TEMP: 82; 6HR PCP: 0.03;
STERLING* CLOUDY 80 75 84 SW3 30.04F HX 85 TC 27
SAVANNA* CLOUDY 77 74 89 CALM 30.03F TC 25
ILZ003-004-008-010-011-017-018-151900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 75 73 93 SE5 30.05F FOG TC 24
6HR MIN TEMP: 71; 6HR MAX TEMP: 75; 6HR PCP: TRACE;
FREEPORT* CLOUDY 75 73 95 E5 30.06F TC 24
ROCHELLE* CLOUDY 75 73 94 CALM 30.05F TC 24
DE KALB* LGT RAIN 73 73 100 S5 30.07F TC 23
PERU* CLOUDY 81 75 83 S8 30.04F HX 86 TC 27
ILZ005-006-012>014-019>023-151900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 75 72 90 SW6 30.05F TC 24
6HR MIN TEMP: 73; 6HR MAX TEMP: 75; 6HR PCP: 0.03;
CHICAGO-MIDWAY CLOUDY 77 73 87 S8 30.05F TC 25
6HR MIN TEMP: 72; 6HR MAX TEMP: 78; 6HR PCP: 0.39;
AURORA LGT RAIN 74 74 100 CALM 30.05F TC 23
6HR MIN TEMP: 71; 6HR MAX TEMP: 74; 6HR PCP: 1.16;
JOLIET* PTSUNNY 80 77 92 SW6 30.06F HX 85 TC 26
WAUKEGAN CLOUDY 74 71 91 SE9 30.05F TC 23
6HR MIN TEMP: 73; 6HR MAX TEMP: 77;
DUPAGE AIRPORT CLOUDY 76 73 91 S8 30.05F TC 24
6HR MIN TEMP: 72; 6HR MAX TEMP: 76; 6HR PCP: 0.15;
KANKAKEE* N/A 76 74 95 S10 30.09F TC 24
WHEELING LGT RAIN 75 73 93 SW5 30.07F FOG TC 24
6HR MIN TEMP: 73; 6HR MAX TEMP: 76; 6HR PCP: TRACE;
LANSING* N/A N/A N/A N/A MISG N/A
NORTHERLY ISL* N/A 76 71 85 S6 N/A TC 24
LMZ740>746-151900-
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 74 110/ 12/ 17 1019.2F 2/ 4
WAUKEGAN HARBOR 74 74 120/ 10/ 14 1018.0F 2/ 3
WILMETTE BUOY 74 150/ 10/ 17 1020.8F 2/ 5
CHICAGO BUOY 74 73 1016.8F 2/ 3
HARRISON CRIB 75 160/ 10/ 12 N/A
NORTHERLY ISL 76 170/ 7/ 10 N/A
CALUMET HARBOR 77 170/ 7/ 11 1018.1
MICHIGAN CITY 78 160/ 8/ 12 1016.5F
MICH CITY BUOY 76 74 170/ 6/ 10 N/A 1/ 5
ST. JOSEPH BUOY 75 74 140/ 8/ 10 1018.7F 1
ILZ025>027-034>036-040-047-049-050-058-095>099-151900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 86 75 69 S15 30.03F HX 95 TC 30
GALESBURG* CLOUDY 80 76 88 S6 30.05S HX 85 TC 27
MACOMB* MOSUNNY 78 78 99 S6 30.05S HX 82 TC 26
JACKSONVILLE* PTSUNNY 82 75 79 SW9 30.05F HX 88 TC 28
ILZ028>032-037-038-041>044-048-051>054-059>061-151900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTSUNNY 81 77 89 SE6 30.06F HX 88 TC 27
BLOOMINGTON MOSUNNY 79 76 90 S8 30.07F HX 83 TC 26
DECATUR PTSUNNY 82 73 74 S7 30.08F HX 87 TC 28
PEORIA MOSUNNY 79 75 87 S6 30.05F HX 83 TC 26
6HR MIN TEMP: 71; 6HR MAX TEMP: 79; 6HR PCP: 0.24;
LACON* PTSUNNY 80 74 82 SW7 30.04S HX 84 TC 27
LINCOLN* DRIZZLE 82 76 83 S7 30.05F HX 89 TC 28
SPRINGFIELD PTSUNNY 81 74 79 S6 30.06F HX 86 TC 27
6HR MIN TEMP: 72; 6HR MAX TEMP: 82;
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-151900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 82 75 79 SW6 30.10S HX 89 TC 28
RANTOUL* MOSUNNY 79 73 81 SW3 30.09F HX 83 TC 26
MATTOON PTSUNNY 82 75 79 SE7 30.10F HX 89 TC 28
PARIS* PTSUNNY 82 74 77 S3 30.11S HX 88 TC 28
ILZ079-100>102-151900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 86 75 70 S12 30.09F HX 95 TC 30
BELLEVILLE PTSUNNY 86 78 76 S9 30.07F HX 99 TC 30
CAHOKIA* PTSUNNY 87 75 67 SE10 30.07F HX 96 TC 31
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-151900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* SUNNY 93 75 56 CALM 30.12F HX 104 TC 34
EFFINGHAM* CLOUDY 82 78 89 SE3 30.11F HX 91 TC 28
MT. VERNON PTSUNNY 89 75 63 S8 30.11F HX 99 TC 32
CENTRALIA* CLOUDY 86 75 68 CALM 30.11S HX 94 TC 30
SALEM* N/A 84 75 73 MISG 30.11F HX 92 TC 29
METROPOLIS* SUNNY 93 73 51 S3 30.12F HX 101 TC 34
ILZ067-068-072-073-078-083-087-091-151900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTSUNNY 86 74 67 E12G20 30.10F HX 94 TC 30
FLORA* PTSUNNY 84 75 74 E3 30.11S HX 92 TC 29
FAIRFIELD* PTSUNNY 88 74 63 SE8 30.10F HX 97 TC 31
ROBINSON* PTSUNNY 84 77 79 SE7 30.10S HX 94 TC 29
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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