075
ASUS43 KLOT 181201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 AM 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.
ILZ001-002-007-009-015-016-024-181300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 65 63 93 SE3 29.82R TC 18
6HR MIN TEMP: 63; 6HR MAX TEMP: 77; 6HR PCP: 0.62;
STERLING* CLOUDY 67 64 90 N6 29.82S TC 19
SAVANNA* CLOUDY 64 61 90 E5 29.79F TC 18
ILZ003-004-008-010-011-017-018-181300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 68 66 93 CALM 29.83S TC 20
6HR MIN TEMP: 68; 6HR MAX TEMP: 74; 6HR PCP: 0.04;
FREEPORT* CLOUDY 64 62 95 CALM 29.84R TC 18
DE KALB* PTSUNNY 72 64 75 SW13G18 29.85R TC 22
ILZ005-006-012>014-019>023-181300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 75 63 66 S16G25 29.83S TC 24
6HR MIN TEMP: 74; 6HR MAX TEMP: 77;
CHICAGO-MIDWAY PTSUNNY 75 62 64 S16G24 29.85S TC 24
6HR MIN TEMP: 74; 6HR MAX TEMP: 77;
AURORA CLOUDY 73 63 70 S12 29.83R TC 23
6HR MIN TEMP: 70; 6HR MAX TEMP: 74;
JOLIET* MOSUNNY 75 64 68 S13G20 29.85F TC 24
WAUKEGAN CLOUDY 74 63 68 SW18G25 29.82R TC 23
6HR MIN TEMP: 59; 6HR MAX TEMP: 77;
DUPAGE AIRPORT PTSUNNY 72 62 71 S14G24 29.83S TC 22
6HR MIN TEMP: 72; 6HR MAX TEMP: 75;
KANKAKEE* PTSUNNY 74 61 65 S14G20 29.90S TC 23
WHEELING PTSUNNY 76 63 64 SW15G25 29.85R TC 24
6HR MIN TEMP: 74; 6HR MAX TEMP: 78;
MORRIS* PTSUNNY 73 63 68 S14G22 29.83S TC 23
ROMEOVILLE* MOSUNNY 75 64 69 S21G32 29.86R TC 24
LANSING* MOSUNNY 73 61 65 S14G21 29.88S TC 23
NORTHERLY ISL* N/A 74 59 59 SW15 N/A TC 23
LMZ740>746-181300-
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 1016.3R 2/ 4
WAUKEGAN HARBOR 67 50 200/ 12/ 17 1011.1R 2/ 4
HARRISON CRIB 74 200/ 26/ 28 N/A
NORTHERLY ISL 74 190/ 13/ 24 N/A
CALUMET HARBOR 73 180/ 12/ 18 1011.2
BURNS HARBOR 73 180/ 9/ 12 1012.5S
MICHIGAN CITY 73 170/ 17/ 20 1010.7R
ST. JOSEPH BUOY 65 180/ 14/ 16 1013.3R 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY TSTM 64 62 93 NW20G31 29.90R FOG TC 18
GALESBURG* PTSUNNY 65 62 90 NE5 29.85R TC 18
MACOMB* LGT RAIN 67 65 94 CALM 29.86R TC 19
JACKSONVILLE* CLOUDY 74 67 79 S12 29.83S TC 23
ILZ028>032-037-038-041>044-048-051>054-059>061-181300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTSUNNY 73 65 75 S25 29.87S TC 23
DECATUR MOSUNNY 72 64 76 S16G30 29.89F TC 22
PEORIA CLOUDY 74 65 73 SW16G24 29.83R TC 23
6HR MIN TEMP: 73; 6HR MAX TEMP: 74;
SPRINGFIELD CLOUDY 75 66 73 S23G35 29.85F TC 24
6HR MIN TEMP: 73; 6HR MAX TEMP: 75;
TAYLORVILLE CLOUDY 73 64 73 S18 29.90S TC 23
ILZ033-039-045-046-055>057-062-063-181300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 72 63 73 S21 29.92S TC 22
DANVILLE* SUNNY 74 62 65 S16G24 29.96R TC 24
MATTOON PTSUNNY 73 63 70 S13G21 29.95R TC 23
PARIS* SUNNY 73 61 65 S15G22 29.97R TC 23
ILZ079-100>102-181300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTSUNNY 75 68 78 S18 29.88S TC 24
CAHOKIA* SUNNY 76 68 76 S8G17 29.89R TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 77 68 73 S13 29.96R TC 25
6HR MIN TEMP: 75; 6HR MAX TEMP: 77;
CAIRO* MOSUNNY 77 69 75 S12G18 29.99S TC 25
EFFINGHAM* MOSUNNY 72 64 78 SE8 29.98R TC 22
MARION SUNNY 75 66 73 S12 29.97S TC 24
MT. VERNON SUNNY 74 65 73 S7 29.97R TC 23
CENTRALIA* SUNNY 74 65 73 CALM 29.95R TC 23
SALEM* MOSUNNY 74 65 73 S7 29.95R TC 24
ILZ067-068-072-073-078-083-087-091-181300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 72 63 73 S15 29.99S TC 22
FLORA* MOSUNNY 73 63 68 S9 29.97R TC 23
FAIRFIELD* MOSUNNY 74 62 66 S8 29.97S TC 23
HARRISBURG* MOSUNNY 75 65 70 S10 29.99S TC 24
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