432
ASUS43 KLOT 182203
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 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.
ILZ001-002-007-009-015-016-024-182300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 73 63 70 SW6 29.82F TC 23
STERLING* CLOUDY 77 63 61 SW13 29.85R TC 25
SAVANNA* CLOUDY 78 63 58 SW7 29.83S HX 80 TC 26
ILZ003-004-008-010-011-017-018-182300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 79 61 53 SW14G22 29.84R HX 80 TC 26
FREEPORT* CLOUDY 78 67 68 SW12G18 29.84S HX 80 TC 26
DE KALB* CLOUDY 76 64 66 SW18G24 29.87R TC 25
PERU* CLOUDY 73 64 73 SW8 29.87S TC 23
ILZ005-006-012>014-019>023-182300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 77 64 64 SW13G25 29.85R TC 25
CHICAGO-MIDWAY CLOUDY 76 63 64 SW17G26 29.87R TC 24
AURORA CLOUDY 76 65 68 S13G21 29.87R TC 24
JOLIET* CLOUDY 76 66 72 SW10G17 29.90R TC 24
WAUKEGAN PTSUNNY 80 64 58 SW17G30 29.81R HX 82 TC 27
DUPAGE AIRPORT PTSUNNY 75 63 66 SW21G28 29.86R TC 24
KANKAKEE* CLOUDY 72 64 75 SW17G25 29.95R TC 22
WHEELING CLOUDY 78 64 61 SW16G25 29.85R HX 80 TC 26
MORRIS* CLOUDY 73 64 73 SW16 29.89R TC 23
ROMEOVILLE* MOSUNNY 75 66 73 SW18G32 29.89R TC 24
LANSING* CLOUDY 73 64 72 SW17G25 29.91R TC 23
NORTHERLY ISL* N/A 75 60 59 S16 N/A TC 24
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 50 1025.0R 2/ 4
WAUKEGAN HARBOR 69 53 210/ 12/ 17 1010.9R 2/ 3
WILMETTE BUOY 70 220/ 17/ 23 1012.4R 1/ 2
CHICAGO BUOY 69 55 230/ 16/ 21 1010.3R 1/ 3
HARRISON CRIB 75 210/ 22/ 24 N/A
NORTHERLY ISL 76 200/ 16/ 17 N/A
CALUMET HARBOR 75 190/ 9/ 17 1011.7R
BURNS HARBOR 74 220/ 10/ 15 1012.5R
MICHIGAN CITY 75 190/ 20/ 23 1010.5R
ST. JOSEPH BUOY 63 210/ 12/ 14 1012.5R 2/ 3
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 PTSUNNY 67 62 84 S15G22 29.85R TC 19
GALESBURG* PTSUNNY 71 64 78 S5 29.86F TC 22
MACOMB* CLOUDY 70 67 88 CALM 29.89F TC 21
JACKSONVILLE* PTSUNNY 66 66 100 S21G28 29.87F TC 19
ILZ028>032-037-038-041>044-048-051>054-059>061-182300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTSUNNY 67 64 90 SW9 29.93F TC 19
DECATUR LGT RAIN 66 63 90 S16 29.96R TC 19
PEORIA NOT AVBL
SPRINGFIELD PTSUNNY 67 63 87 S16G29 29.91F TC 19
TAYLORVILLE CLOUDY 64 63 94 S16 29.98R TC 18
ILZ033-039-045-046-055>057-062-063-182300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN LGT RAIN 66 64 93 S20 29.96F TC 19
DANVILLE* CLOUDY 68 65 88 S25G33 29.99R TC 20
MATTOON LGT RAIN 67 65 93 S10 30.00F TC 19
PARIS* RAIN 66 65 97 S9 30.02R TC 19
ILZ079-100>102-182300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON TSTM 66 63 88 S7 30.00F TC 19
BELLEVILLE TSTM 70 66 88 E3 30.01S TC 21
CAHOKIA* TSTM 68 64 87 SE5 30.03R FOG TC 20
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 PTSUNNY 70 66 88 N9 30.05R TC 21
CAIRO* CLOUDY 82 71 69 NW5 30.00R HX 86 TC 28
EFFINGHAM* LGT RAIN 66 66 100 S9 30.07R TC 19
MARION PTSUNNY 73 66 78 N21 30.04R TC 23
MT. VERNON LGT RAIN 67 66 97 CALM 30.07R TC 19
CENTRALIA* CLOUDY 67 66 97 CALM 30.05F TC 19
SALEM* CLOUDY 68 68 100 MISG 30.04F TC 20
ILZ067-068-072-073-078-083-087-091-182300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE LGT RAIN 69 67 93 NW5 30.04R TC 21
FLORA* LGT RAIN 68 N/A N/A W7 30.07R TC 20
FAIRFIELD* PTSUNNY 69 65 88 NW6 30.06R TC 21
HARRISBURG* LGT RAIN 75 70 84 N16 30.04R TC 24
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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