251
ASUS43 KLOT 182101
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 PM CDT MON MAY 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.
ILZ001-002-007-009-015-016-024-182200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 75 64 68 SW9 29.84R TC 24
STERLING* CLOUDY 78 63 59 SW16G23 29.84R HX 80 TC 26
SAVANNA* CLOUDY 78 64 60 W10 29.83R HX 80 TC 26
ILZ003-004-008-010-011-017-018-182200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 79 62 56 SW15G22 29.82F HX 80 TC 26
FREEPORT* CLOUDY 78 66 68 W14 29.84S TC 25
DE KALB* PTSUNNY 78 64 61 SW17G25 29.85S HX 80 TC 26
PERU* CLOUDY N/A N/A N/A S10 29.85F
ILZ005-006-012>014-019>023-182200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 77 63 61 SW15G29 29.82F TC 25
CHICAGO-MIDWAY CLOUDY 77 63 61 SW14G31 29.85S TC 25
AURORA CLOUDY 77 65 66 SW13G24 29.84F TC 25
JOLIET* CLOUDY 76 66 70 SW12G18 29.87S TC 25
WAUKEGAN PTSUNNY 80 63 55 SW17G33 29.78F HX 81 TC 27
DUPAGE AIRPORT PTSUNNY 78 66 66 SW18G25 29.83F HX 80 TC 26
KANKAKEE* CLOUDY 73 64 74 SW17 29.91S TC 23
WHEELING PTSUNNY 79 64 60 SW15G24 29.82F HX 81 TC 26
ROMEOVILLE* MOSUNNY 75 66 73 SW17G25 29.87F TC 24
LANSING* CLOUDY 75 64 68 SW14G24 29.88F TC 24
NORTHERLY ISL* N/A 77 60 55 S16 N/A TC 25
LMZ740>746-182200-
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 50 1023.3R 1/ 3
WAUKEGAN HARBOR 53 230/ 16/ 25 1010.0F 2/ 3
WILMETTE BUOY 70 220/ 14/ 21 1011.5F 2/ 2
CHICAGO BUOY 69 55 220/ 14/ 19 1009.3F 2/ 3
HARRISON CRIB 77 210/ 26/ 29 N/A
NORTHERLY ISL 78 200/ 14/ 16 N/A
CALUMET HARBOR 76 200/ 16/ 23 1010.9F
BURNS HARBOR 74 220/ 11/ 14 1011.9S
MICHIGAN CITY 75 190/ 20/ 25 1010.2R
ST. JOSEPH BUOY 64 190/ 12/ 16 1012.2F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-182200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTSUNNY 67 62 84 S15G29 29.84F TC 19
GALESBURG* PTSUNNY 72 63 74 SW5 29.88F TC 22
MACOMB* PTSUNNY 72 65 81 CALM 29.89F TC 22
JACKSONVILLE* CLOUDY 64 64 100 S16G24 29.90F TC 18
ILZ028>032-037-038-041>044-048-051>054-059>061-182200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTSUNNY 68 65 90 W10 29.94R TC 20
DECATUR LGT RAIN 67 63 87 SW26G35 29.95R TC 19
PEORIA NOT AVBL
SPRINGFIELD LGT RAIN 67 63 87 S15G31 29.93R TC 19
TAYLORVILLE CLOUDY 66 63 88 SW12 29.99R TC 19
ILZ033-039-045-046-055>057-062-063-182200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN LGT RAIN 69 66 90 S23G31 29.97R TC 21
DANVILLE* CLOUDY 69 66 89 S16 29.95R TC 21
MATTOON RAIN 68 66 93 S12 30.02R FOG TC 20
PARIS* RAIN 67 66 98 S13 30.00F TC 19
ILZ079-100>102-182200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON TSTM 66 63 88 NW7 30.03R TC 19
BELLEVILLE RAIN 68 66 94 SE6 30.03 FOG TC 20
CAHOKIA* CLOUDY 69 66 90 E7 30.02R TC 21
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* PTSUNNY 88 69 53 S9G20 29.99F HX 92 TC 31
EFFINGHAM* RAIN 65 65 100 SE3 30.06S TC 19
MARION CLOUDY 79 73 83 NW12 30.02R HX 82 TC 26
MT. VERNON LGT RAIN 68 67 96 N3 30.06F TC 20
CENTRALIA* LGT RAIN 66 66 98 CALM 30.07F TC 19
SALEM* HVY RAIN 67 66 97 CALM 30.06F TC 20
ILZ067-068-072-073-078-083-087-091-182200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 69 67 93 NE7 30.02 TC 21
FLORA* HVY RAIN 66 N/A N/A CALM 30.07S FOG TC 19
FAIRFIELD* LGT RAIN 69 66 91 N12 30.05R TC 20
HARRISBURG* CLOUDY 80 72 75 SW8 30.01R HX 84 TC 27
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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