155
ASUS43 KLOT 181656
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 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.
ILZ001-002-007-009-015-016-024-181800-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 74 63 68 SW15 29.81R TC 23
ILZ003-004-008-010-011-017-018-181800-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD NOT AVBL
PERU* PTSUNNY 73 66 78 S14 29.81R TC 23
ILZ005-006-012>014-019>023-181800-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 70 68 93 SE8 29.79F TC 21
CHICAGO-MIDWAY LGT RAIN 70 67 90 S10 29.82F TC 21
AURORA CLOUDY 69 66 90 CALM 29.82R TC 21
WAUKEGAN RAIN 70 68 93 S10 29.77F FOG TC 21
DUPAGE AIRPORT PTSUNNY 70 68 93 CALM 29.80R TC 21
WHEELING MOSUNNY 68 66 93 VRB3 29.80F TC 20
MORRIS* MOSUNNY 70 66 88 SE14 29.79F TC 21
ROMEOVILLE* PTSUNNY 70 70 100 SE14 29.81F TC 21
NORTHERLY ISL* N/A 65 63 93 SE5 N/A TC 18
LMZ740>746-181800-
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 49 1015.3F 2/ 4
WAUKEGAN HARBOR 61 50 160/ 14/ 17 1010.3F 2/ 3
WILMETTE BUOY 65 220/ 12/ 21 1012.4R 1/ 3
CHICAGO BUOY 62 54 1009.7R 1/ 2
HARRISON CRIB 66 210/ 11/ 12 N/A
NORTHERLY ISL 66 290/ 10/ 16 N/A
CALUMET HARBOR 230/ 17/ 30 1011.9
BURNS HARBOR 74 260/ 25/ 29 1012.9R
MICHIGAN CITY 81 190/ 23/ 29 1009.1F
ST. JOSEPH BUOY 67 190/ 12/ 14 1012.1F 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181800-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ028>032-037-038-041>044-048-051>054-059>061-181800-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PEORIA NOT AVBL
SPRINGFIELD LGT RAIN 67 65 93 S12 29.96R TC 19
TAYLORVILLE CLOUDY 66 64 94 SE5 30.00R TC 19
ILZ033-039-045-046-055>057-062-063-181800-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MATTOON RAIN 67 65 93 N7 30.01 FOG TC 19
ILZ079-100>102-181800-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON TSTM 66 64 94 E3 29.98S TC 19
CAHOKIA* CLOUDY 67 65 93 NE7G17 29.99S THUNDER TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181800-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MARION CLOUDY 81 72 74 SW12 30.01R HX 84 TC 27
ILZ067-068-072-073-078-083-087-091-181800-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page