345
ASUS43 KLOT 181603
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 AM CST THU DEC 18 2025
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.
ILZ001-002-007-009-015-016-024-181700-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE HVY RAIN 47 45 93 W26G41 29.34R FOG TC 8
STERLING* CLOUDY 49 49 100 S13G23 29.33F TC 9
SAVANNA* RAIN 43 42 96 S13 29.29F VSB 1/4 TC 6
ILZ003-004-008-010-011-017-018-181700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD FOG 42 42 100 S15G33 29.36F VSB 1/4 TC 6
FREEPORT* CLOUDY 42 39 89 S20G26 29.33F VSB<1/4 TC 5
DE KALB* RAIN 40 40 100 S17 29.42F VSB<1/4 TC 5
ILZ005-006-012>014-019>023-181700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 48 45 89 S23G39 29.44F TC 9
CHICAGO-MIDWAY CLOUDY 49 46 90 S20G38 29.47F TC 9
AURORA FOG 43 43 100 S18G32 29.43F VSB<1/4 TC 6
JOLIET* CLOUDY 48 47 97 S14G28 29.47F TC 9
WAUKEGAN CLOUDY 48 47 96 S18G33 29.42F TC 9
DUPAGE AIRPORT CLOUDY 47 46 97 S25G39 29.43F FOG TC 8
WHEELING CLOUDY 48 46 93 S22G28 29.45F TC 9
MORRIS* CLOUDY 46 46 100 S18G28 29.45F TC 8
ROMEOVILLE* CLOUDY 48 48 100 S25G35 29.48F TC 9
LANSING* LGT RAIN 48 44 86 S23G30 29.52F TC 9
NORTHERLY ISL* N/A 49 45 86 S26 N/A TC 9
LMZ740>746-181700-
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)
HARRISON CRIB 49 200/ 33/ 36 N/A
NORTHERLY ISL 49 200/ 14/ 26 N/A
CALUMET HARBOR 49 160/ 21/ 27 998.4
BURNS HARBOR 48 180/ 12/ 17 1000.7F
MICHIGAN CITY 48 170/ 17/ 21 999.6F
ILZ025>027-034>036-040-047-049-050-058-095>099-181700-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY LGT RAIN 43 41 93 NW26G45 29.45 TC 6
GALESBURG* HVY RAIN N/A N/A N/A S13G22 29.33F
MACOMB* RAIN 52 52 100 S20G26 29.36F TC 11
JACKSONVILLE* CLOUDY 55 55 99 S24 29.43F TC 13
ILZ028>032-037-038-041>044-048-051>054-059>061-181700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 48 47 96 S24G33 29.48F TC 9
BLOOMINGTON CLOUDY 49 49 100 S26G35 29.48F FOG TC 9
DECATUR CLOUDY 52 50 93 S18G33 29.53F TC 11
PEORIA CLOUDY 52 50 93 S21G32 29.39F TC 11
LACON* CLOUDY 50 47 90 S21G26 29.39F TC 10
LINCOLN* CLOUDY 54 52 94 S21G30 29.47F TC 12
SPRINGFIELD CLOUDY 53 51 93 S28G49 29.47F TC 12
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 47 45 93 S21 29.57F TC 8
DANVILLE* CLOUDY 51 45 80 S21G29 29.60F TC 11
RANTOUL* LGT RAIN 44 43 97 S14 29.56F TC 7
MATTOON CLOUDY 52 47 83 S20G45 29.59F TC 11
PARIS* CLOUDY 49 45 83 S29 29.64F TC 10
ILZ079-100>102-181700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 55 52 88 S17G26 29.54F TC 13
BELLEVILLE LGT RAIN 54 53 95 S22G29 29.55 FOG TC 12
CAHOKIA* CLOUDY 56 53 90 S17G30 29.53F TC 13
SPARTA* CLOUDY 53 53 100 S16G23 29.63F TC 12
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181700-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 55 52 89 S20G29 29.66F TC 13
CAIRO* CLOUDY 56 53 90 S12 29.73S TC 13
EFFINGHAM* CLOUDY 53 51 92 SE15G25 29.64F TC 12
MARION CLOUDY 54 52 94 S14G25 29.69S TC 12
MT. VERNON CLOUDY N/A N/A N/A S16 29.66F
CENTRALIA* N/A N/A N/A N/A MISG N/A
SALEM* CLOUDY 55 51 86 S17G26 29.62F TC 13
METROPOLIS* CLOUDY 55 50 82 CALM 29.75R TC 13
ILZ067-068-072-073-078-083-087-091-181700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 49 45 86 S21G29 29.71F TC 9
FLORA* CLOUDY 52 48 87 S18 29.68F TC 11
FAIRFIELD* CLOUDY 52 47 83 S16G24 29.70R TC 11
HARRISBURG* CLOUDY 54 50 87 S14 29.72S TC 12
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