405
ASUS43 KLOT 180801
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 AM CDT THU JUN 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.
ILZ001-002-007-009-015-016-024-180900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 65 55 70 W15 29.55R TC 18
STERLING* CLEAR 63 58 83 W15 29.52R TC 17
SAVANNA* CLEAR 64 55 72 W13G18 29.53R TC 18
ILZ003-004-008-010-011-017-018-180900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 63 58 83 W12 29.49R TC 17
FREEPORT* CLEAR 62 59 88 W12G17 29.51R TC 17
DE KALB* CLEAR 64 59 85 W14G22 29.49R TC 18
PERU* CLEAR 66 57 72 W16 29.51S TC 19
ILZ005-006-012>014-019>023-180900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 66 59 78 W13G21 29.44R TC 19
CHICAGO-MIDWAY PTCLDY 67 60 78 W12G22 29.45R TC 19
AURORA PTCLDY 64 59 83 W13 29.47R TC 18
JOLIET* CLEAR 67 61 80 W6 29.48R TC 20
WAUKEGAN CLEAR 62 59 90 W12 29.43R TC 17
DUPAGE AIRPORT PTCLDY 65 59 81 W9 29.46R TC 18
KANKAKEE* CLEAR 66 58 73 W17G23 29.50R TC 19
WHEELING MOCLDY 65 60 84 W9 29.46R TC 18
LANSING* CLEAR 67 59 76 W13G20 29.46R TC 19
NORTHERLY ISL* N/A 68 57 68 SW6 N/A TC 20
LMZ740>746-180900-
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 60 50 999.6F 1/ 4
WAUKEGAN HARBOR 62 50 260/ 12/ 17 999.4R 1
WILMETTE BUOY 62 310/ 14/ 19 998.5R 1/ 3
CHICAGO BUOY 68 58 280/ 12/ 17 996.1R 1
HARRISON CRIB 69 280/ 15/ 17 N/A
NORTHERLY ISL 68 230/ 7/ 10 N/A
CALUMET HARBOR 67 230/ 5/ 8 997.0
BURNS HARBOR 250/ 8/ 10 997.6R
MICHIGAN CITY 67 240/ 16/ 18 995.0R
MICH CITY BUOY 64 61 260/ 12/ 16 975.5R 2/ 4
ST. JOSEPH BUOY 65 64 270/ 16/ 19 997.6R 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-180900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 67 53 61 W13 29.65R TC 19
MACOMB* CLEAR 64 56 75 W13 29.63R TC 18
ILZ028>032-037-038-041>044-048-051>054-059>061-180900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 66 58 75 W10 29.56R TC 19
DECATUR CLEAR 67 64 90 W8 29.58R TC 19
PEORIA CLEAR 67 55 65 W12 29.57R TC 19
SPRINGFIELD CLEAR 65 63 93 W9 29.60R TC 18
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-180900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 67 66 97 SW8 29.56S TC 19
DANVILLE* CLEAR 67 65 94 W8 29.55S TC 19
MATTOON CLEAR 68 66 93 SW6 29.58S TC 20
PARIS* CLEAR 67 67 98 W9 29.57R TC 20
ILZ079-100>102-180900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BELLEVILLE CLEAR 75 74 97 SW6 29.63R TC 24
CAHOKIA* PTCLDY 74 73 97 SW5 29.65R TC 23
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 81 74 79 W12 29.65R HX 86 TC 27
CAIRO* MOCLDY 81 76 85 SW9G22 29.69F HX 87 TC 27
MARION CLOUDY 80 74 80 SW8 29.66R HX 85 TC 27
CENTRALIA* CLOUDY 75 73 94 CALM 29.64S TC 24
SALEM* MOCLDY 74 74 98 MISG 29.63S TC 24
ILZ067-068-072-073-078-083-087-091-180900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 72 69 90 W9 N/A TC 22
FLORA* MOCLDY 73 N/A N/A W9 29.62S TC 23
FAIRFIELD* CLOUDY 80 71 74 NW6 29.62R HX 83 TC 27
HARRISBURG* MOCLDY 81 75 84 SW15G24 29.64R HX 86 TC 27
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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