386
ASUS43 KLOT 181501
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 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.
ILZ001-002-007-009-015-016-024-181600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE RAIN 49 48 97 S17G26 29.31F FOG TC 9
STERLING* CLOUDY 46 46 100 S12G23 29.38F FOG TC 8
SAVANNA* FOG 42 41 96 S12 29.33F VSB<1/4 TC 5
ILZ003-004-008-010-011-017-018-181600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD DRZL/FOG 41 41 100 S17G28 29.41F VSB 1/4 TC 5
FREEPORT* CLOUDY 41 38 89 S21 29.37F VSB<1/4 TC 5
DE KALB* LGT RAIN 38 38 100 S14 29.44F VSB<1/4 WCI 30
ILZ005-006-012>014-019>023-181600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 48 46 93 S23G36 29.46F TC 9
CHICAGO-MIDWAY LGT RAIN 47 45 93 S25G38 29.50F TC 8
AURORA FOG 42 42 100 S20G29 29.45F VSB<1/4 TC 6
JOLIET* CLOUDY 48 48 98 S14G26 29.50F TC 9
WAUKEGAN CLOUDY 47 45 93 S21G30 29.43F FOG TC 8
DUPAGE AIRPORT CLOUDY 45 45 100 S26G39 29.45F FOG TC 7
WHEELING CLOUDY 48 47 96 S25G37 29.46F TC 9
MORRIS* CLOUDY 45 45 100 S18G26 29.48F FOG TC 7
ROMEOVILLE* CLOUDY 46 46 100 S26G33 29.50F TC 8
LANSING* LGT SNOW 46 42 85 S23G29 29.55F TC 8
NORTHERLY ISL* N/A 48 44 86 S21 N/A TC 9
LMZ740>746-181600-
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 47 200/ 30/ 32 N/A
NORTHERLY ISL 47 190/ 21/ 26 N/A
CALUMET HARBOR 48 170/ 17/ 25 999.4F
BURNS HARBOR 47 190/ 9/ 14 1002.0F
MICHIGAN CITY 46 170/ 20/ 26 1000.8R
ILZ025>027-034>036-040-047-049-050-058-095>099-181600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY LGT RAIN 55 53 93 S17G26 29.37F TC 13
GALESBURG* RAIN N/A N/A N/A S13G23 29.38F
MACOMB* LGT RAIN 48 48 100 S17 29.40F TC 9
JACKSONVILLE* CLOUDY 53 53 99 S21G29 29.46F TC 12
ILZ028>032-037-038-041>044-048-051>054-059>061-181600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 46 45 97 S24 29.51F FOG TC 8
BLOOMINGTON CLOUDY 47 47 100 S26 29.51F FOG TC 8
DECATUR LGT RAIN 51 50 96 S13 29.58F FOG TC 11
PEORIA CLOUDY 50 49 96 S21G29 29.45F FOG TC 10
LACON* CLOUDY 49 46 92 S17G24 29.44F TC 9
LINCOLN* CLOUDY 52 50 93 S20G26 29.51F TC 11
SPRINGFIELD CLOUDY 52 50 93 S25G44 29.50F TC 11
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 46 44 93 S20 29.60F TC 8
DANVILLE* CLOUDY 51 45 80 S24G35 29.63S TC 10
RANTOUL* CLOUDY 40 39 95 S13 29.61S TC 5
MATTOON CLOUDY 50 45 83 S18G31 29.62S TC 10
PARIS* CLOUDY 49 43 80 S18G26 29.67R TC 9
ILZ079-100>102-181600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 54 52 94 S16 29.57F FOG TC 12
BELLEVILLE LGT RAIN 54 52 94 S16G22 29.60 FOG TC 12
CAHOKIA* LGT RAIN 55 53 93 S8G21 29.57 FOG TC 13
SPARTA* CLOUDY 53 52 99 S16G24 29.64R TC 12
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 54 51 90 S21G29 29.67F TC 12
CAIRO* CLOUDY 55 51 87 S17 29.72R TC 13
EFFINGHAM* CLOUDY 53 49 87 SE14G21 29.66S TC 12
MARION CLOUDY 54 50 87 S17G23 29.69F TC 12
MT. VERNON CLOUDY N/A N/A N/A S13G25 29.67S
CENTRALIA* N/A N/A N/A N/A MISG N/A
SALEM* CLOUDY 55 51 84 S14G30 29.64R TC 13
METROPOLIS* CLOUDY 54 47 78 S3 29.74F TC 12
ILZ067-068-072-073-078-083-087-091-181600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE LGT RAIN 49 44 83 S21G28 29.73F TC 9
FLORA* CLOUDY 54 48 82 S21G28 29.68R TC 12
FAIRFIELD* CLOUDY 51 48 89 S17 29.70S TC 11
HARRISBURG* CLOUDY 52 48 87 S12 29.71F TC 11
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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