700
ASUS43 KLOT 182201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT SUN OCT 18 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.
ILZ001-002-007-009-015-016-024-182300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE SUNNY 65 39 38 S9 30.31S TC 18
STERLING* SUNNY 64 37 36 VRB6 30.34S TC 18
SAVANNA* SUNNY 65 42 43 S12 30.31S TC 19
ILZ003-004-008-010-011-017-018-182300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD SUNNY 62 38 40 S15 30.34S TC 17
FREEPORT* SUNNY 64 39 40 S13 30.33S TC 18
DE KALB* SUNNY 60 38 43 S14 30.36R TC 16
ILZ005-006-012>014-019>023-182300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE SUNNY 63 33 32 S9G21 30.34S TC 17
CHICAGO-MIDWAY SUNNY 64 31 28 SW14 30.36S TC 18
AURORA SUNNY 62 35 36 S10 30.35S TC 17
JOLIET* SUNNY 65 34 31 S9 30.37S TC 18
WAUKEGAN SUNNY 62 36 37 SW13G22 30.33S TC 17
DUPAGE AIRPORT SUNNY 62 36 37 S13G23 30.35S TC 17
WHEELING MOSUNNY 63 34 33 SW12 30.35F TC 17
LANSING* SUNNY 62 31 31 S10G17 30.38S TC 17
NORTHERLY ISL* N/A 63 29 27 S12 N/A TC 17
LMZ740>746-182300-
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 61 56 1024.5F
WAUKEGAN HARBOR 60 55 200/ 12/ 17 1025.8R 2/ 3
WILMETTE BUOY 62 170/ 16/ 19 1032.0F 2/ 3
CHICAGO BUOY 63 58 210/ 14/ 19 1026.6F 1/ 3
HARRISON CRIB 63 190/ 21/ 23 N/A
NORTHERLY ISL 64 200/ 10/ 18 N/A
CALUMET HARBOR 64 170/ 13/ 17 1028.1
MICHIGAN CITY 63 170/ 10/ 12 1027.8F
MICH CITY BUOY 62 60 190/ 12/ 16 N/A 1/ 3
ST. JOSEPH BUOY 61 59 190/ 10/ 12 1029.4F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-182300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY SUNNY 65 38 36 S10 30.33F TC 18
GALESBURG* SUNNY 63 42 46 S10 30.34F TC 17
MACOMB* SUNNY 65 38 37 S9 30.35F TC 18
ILZ028>032-037-038-041>044-048-051>054-059>061-182300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON SUNNY 62 37 39 S9 30.38F TC 17
DECATUR SUNNY 63 37 38 S8 30.39S TC 17
PEORIA SUNNY 63 37 38 S13 30.36S TC 17
LACON* SUNNY 63 36 36 S8 30.35F TC 17
SPRINGFIELD SUNNY 64 35 34 SE12 30.37S TC 18
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-182300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 63 36 36 S9 30.40S TC 17
MATTOON SUNNY 63 35 35 S9 30.39F TC 17
ILZ079-100>102-182300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 64 37 36 SE6 30.37F TC 18
CAHOKIA* SUNNY 66 37 34 SE8 30.37S TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 66 37 34 S5 30.38F TC 19
CAIRO* SUNNY 68 41 37 CALM 30.38S TC 20
EFFINGHAM* SUNNY 63 32 31 SE3 30.41F TC 17
MT. VERNON SUNNY 66 35 31 SE6 30.39F TC 19
CENTRALIA* SUNNY 66 34 30 SE6 30.39S TC 19
SALEM* SUNNY 66 38 35 MISG 30.39F TC 19
ILZ067-068-072-073-078-083-087-091-182300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE N/A N/A N/A N/A MISG 30.40F
FLORA* SUNNY 64 37 36 SE5 30.40F TC 18
FAIRFIELD* SUNNY 65 34 31 E3 30.40S TC 18
HARRISBURG* HAZE 65 36 33 E5 30.40S VSB 1/2 TC 19
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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