266
ASUS43 KLOT 180606
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 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.
ILZ001-002-007-009-015-016-024-180700-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 39 33 79 SE8 29.61F WCI 33 TC 4
6HR MIN TEMP: 28; 6HR MAX TEMP: 40;
STERLING* MOCLDY 37 34 89 SE8 29.66F WCI 31 TC 3
SAVANNA* MOCLDY 37 32 83 S8 29.65F WCI 30 TC 3
ILZ003-004-008-010-011-017-018-180700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 35 31 85 SE13G22 29.69F WCI 26 TC 2
6HR MIN TEMP: 27; 6HR MAX TEMP: 35;
FREEPORT* MOCLDY 38 33 84 S16 29.68F WCI 29 TC 3
DE KALB* CLOUDY 35 32 89 SE13G18 29.72F WCI 26 TC 2
PERU* CLOUDY 37 32 85 SE10 29.71F WCI 29 TC 3
ILZ005-006-012>014-019>023-180700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 36 31 82 SE3 29.77F TC 2
6HR MIN TEMP: 34; 6HR MAX TEMP: 37;
CHICAGO-MIDWAY CLOUDY 41 33 73 S9 29.79F TC 5
6HR MIN TEMP: 35; 6HR MAX TEMP: 41;
AURORA CLOUDY 34 31 88 SE6 29.74F WCI 29 TC 1
6HR MIN TEMP: 29; 6HR MAX TEMP: 34;
JOLIET* MOCLDY 42 35 75 S7 29.78F TC 6
WAUKEGAN MOCLDY 36 32 85 S10 29.75F WCI 28 TC 2
6HR MIN TEMP: 33; 6HR MAX TEMP: 36;
DUPAGE AIRPORT CLOUDY 36 32 85 SE12 29.74F WCI 28 TC 2
6HR MIN TEMP: 32; 6HR MAX TEMP: 36;
KANKAKEE* CLOUDY 38 33 81 SE9 29.79F WCI 31 TC 3
WHEELING MOCLDY 35 32 88 S8 29.78F WCI 29 TC 2
6HR MIN TEMP: 29; 6HR MAX TEMP: 36;
MORRIS* CLOUDY 38 34 85 S10 29.75F WCI 31 TC 3
ROMEOVILLE* MOCLDY 37 34 87 SE10G17 29.78F WCI 30 TC 3
LANSING* MOCLDY 39 29 67 S13G20 29.80F WCI 31 TC 4
NORTHERLY ISL* N/A 41 32 70 S6 N/A TC 5
LMZ740>746-180700-
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 37 180/ 13/ 13 N/A
NORTHERLY ISL 39 160/ 9/ 12 N/A
CALUMET HARBOR 41 160/ 9/ 14 1008.6
BURNS HARBOR 42 170/ 9/ 13 1009.5F
MICHIGAN CITY 41 160/ 13/ 17 1009.3F
ILZ025>027-034>036-040-047-049-050-058-095>099-180700-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 50 41 71 S15G25 29.64F TC 10
GALESBURG* MOCLDY 39 38 94 S10G18 29.65F WCI 32 TC 4
MACOMB* MOCLDY 39 35 86 S13 29.67F WCI 32 TC 4
JACKSONVILLE* MOCLDY 47 39 74 S15G23 29.70F TC 8
ILZ028>032-037-038-041>044-048-051>054-059>061-180700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 40 33 77 S15 29.75F TC 4
BLOOMINGTON CLOUDY 39 35 86 S17 29.75F WCI 30 TC 4
DECATUR CLOUDY 45 38 76 S15G24 29.78F TC 7
PEORIA CLOUDY 41 35 79 S16 29.70F TC 5
6HR MIN TEMP: 35; 6HR MAX TEMP: 42;
LACON* CLOUDY 43 34 71 S12 29.69F TC 6
LINCOLN* CLOUDY 41 34 75 S8 29.75F TC 5
SPRINGFIELD MOCLDY 43 40 89 S20G29 29.74F TC 6
6HR MIN TEMP: 35; 6HR MAX TEMP: 44;
TAYLORVILLE CLOUDY 47 44 91 S20G26 29.77F TC 8
6HR MIN TEMP: 39; 6HR MAX TEMP: 47;
ILZ033-039-045-046-055>057-062-063-180700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 40 35 83 S17 29.81F TC 4
DANVILLE* CLOUDY 45 35 67 S16 29.83F TC 7
RANTOUL* CLOUDY 38 33 82 SE9 29.80F WCI 31 TC 3
MATTOON CLOUDY 48 39 71 S17G31 29.82F TC 9
PARIS* CLOUDY 38 32 78 SE13 29.85F WCI 31 TC 4
ILZ079-100>102-180700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 50 46 86 S17G23 29.78F TC 10
BELLEVILLE CLOUDY 51 49 92 S18 29.80F TC 10
CAHOKIA* CLOUDY 50 46 86 S13G21 29.79F TC 10
SPARTA* CLOUDY 50 50 100 S15G24 29.85F TC 10
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180700-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 50 49 96 S15 29.87F FOG TC 10
6HR MIN TEMP: 50; 6HR MAX TEMP: 54;
CAIRO* CLOUDY 54 48 80 S10G17 29.91S TC 12
EFFINGHAM* CLOUDY 51 45 80 SE13G20 29.86F TC 10
MARION CLOUDY 51 47 86 S16G28 29.89F TC 11
MT. VERNON CLOUDY N/A N/A N/A S14 29.87F
CENTRALIA* N/A N/A N/A N/A MISG N/A
SALEM* CLOUDY 52 49 88 S17 29.85F FOG TC 11
METROPOLIS* CLOUDY 53 44 72 CALM 29.92F TC 12
ILZ067-068-072-073-078-083-087-091-180700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 48 39 71 S12 29.91S TC 9
FLORA* CLOUDY 50 48 93 S18 29.88F TC 10
FAIRFIELD* CLOUDY 51 46 83 S9G20 29.89F TC 11
HARRISBURG* CLOUDY 52 46 79 S9 29.91S TC 11
ROBINSON* CLOUDY 50 39 66 S15 29.87F TC 10
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