670
ASUS43 KLOT 181956
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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.
ILZ001-002-007-009-015-016-024-182100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 75 63 66 SW15 29.82F TC 24
ILZ003-004-008-010-011-017-018-182100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 79 62 56 SW15G29 29.83S HX 80 TC 26
PERU* CLOUDY 75 64 69 SW13 29.86F TC 24
ILZ005-006-012>014-019>023-182100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 79 63 57 SW18G31 29.83S HX 80 TC 26
CHICAGO-MIDWAY NOT AVBL
AURORA CLOUDY 78 66 66 SW13G24 29.85S HX 80 TC 26
WAUKEGAN PTSUNNY 80 63 55 SW24G33 29.81S HX 81 TC 27
DUPAGE AIRPORT PTSUNNY 78 66 66 SW18G25 29.84S HX 80 TC 26
WHEELING PTSUNNY 79 64 60 SW13G23 29.84S HX 81 TC 26
MORRIS* CLOUDY 75 64 69 SW14 29.87F TC 24
ROMEOVILLE* SUNNY 77 66 69 S18G28 29.88R TC 25
NORTHERLY ISL* N/A 79 60 52 S13 N/A HX 80 TC 26
LMZ740>746-182100-
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 1015.9F 1/ 3
WAUKEGAN HARBOR 58 53 160/ 8/ 10 1010.9S 1/ 3
WILMETTE BUOY 59 170/ 12/ 16 1011.9R 2/ 3
CHICAGO BUOY 63 56 180/ 8/ 12 1009.5S 1/ 3
HARRISON CRIB 72 180/ 13/ 15 N/A
NORTHERLY ISL 76 220/ 9/ 12 N/A
CALUMET HARBOR 200/ 10/ 16 1011.2
BURNS HARBOR 74 190/ 13/ 16 1011.9S
MICHIGAN CITY 75 190/ 19/ 22 1009.8R
ST. JOSEPH BUOY 61 180/ 8/ 10 1012.4R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-182100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ028>032-037-038-041>044-048-051>054-059>061-182100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PEORIA NOT AVBL
SPRINGFIELD LGT RAIN 67 64 90 S21G35 29.91F TC 19
TAYLORVILLE CLOUDY 66 64 94 SW8 29.95F TC 19
ILZ033-039-045-046-055>057-062-063-182100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ079-100>102-182100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON TSTM 66 64 94 N5 30.01F TC 19
CAHOKIA* LGT RAIN 67 65 93 E5 30.01F FOG TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MARION CLOUDY 77 72 83 SW7 30.00F TC 25
MT. VERNON TSTM 68 66 94 W8G24 30.04R TC 20
ILZ067-068-072-073-078-083-087-091-182100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE RAIN 69 67 93 N8 30.00F TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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