863
ASUS43 KLOT 180812
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 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.
ILZ001-002-007-009-015-016-024-180900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 44 37 76 S15G30 29.54F TC 7
STERLING* MOCLDY 38 35 89 SE7 29.60F WCI 33 TC 3
SAVANNA* CLOUDY 37 33 84 S10 29.58F WCI 30 TC 3
ILZ003-004-008-010-011-017-018-180900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 38 34 85 SE13G21 29.62F WCI 30 TC 3
FREEPORT* CLOUDY 38 35 87 S20 29.60F WCI 28 TC 4
DE KALB* CLOUDY 36 33 90 S16 29.64F WCI 26 TC 2
PERU* CLOUDY 39 35 86 S15 29.63F WCI 30 TC 4
ILZ005-006-012>014-019>023-180900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 43 34 70 S17G26 29.66F TC 6
CHICAGO-MIDWAY CLOUDY 44 35 70 S17G28 29.69F TC 7
AURORA CLOUDY 39 34 82 S18G26 29.64F WCI 30 TC 4
JOLIET* CLOUDY 45 38 76 S14G21 29.69F TC 7
WAUKEGAN CLOUDY 38 33 82 S8 29.64F WCI 32 TC 3
DUPAGE AIRPORT CLOUDY 40 34 79 S14 29.65F TC 4
KANKAKEE* CLOUDY 44 36 72 S18G25 29.72F TC 7
WHEELING CLOUDY 43 34 70 S18 29.66F TC 6
MORRIS* CLOUDY 41 36 83 S16 29.66F TC 5
ROMEOVILLE* CLOUDY 41 36 81 S17 29.69F TC 5
LANSING* CLOUDY 41 31 67 S17 29.72F TC 5
NORTHERLY ISL* N/A 44 34 67 S13 N/A TC 7
LMZ740>746-180900-
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 41 170/ 23/ 25 N/A
NORTHERLY ISL 42 180/ 9/ 11 N/A
CALUMET HARBOR 44 160/ 12/ 17 1005.7F
BURNS HARBOR 45 170/ 9/ 15 1007.1F
MICHIGAN CITY 44 170/ 13/ 16 1006.4F
ILZ025>027-034>036-040-047-049-050-058-095>099-180900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 51 46 83 S17G28 29.56F TC 11
GALESBURG* CLOUDY 40 39 98 S13G20 29.58F TC 4
MACOMB* CLOUDY 41 38 86 S18G24 29.60F TC 5
JACKSONVILLE* CLOUDY 48 47 96 S16G26 29.65F TC 9
ILZ028>032-037-038-041>044-048-051>054-059>061-180900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 41 36 83 S22 29.67F TC 5
BLOOMINGTON CLOUDY 39 39 100 S21 29.68F WCI 29 TC 4
DECATUR CLOUDY 44 44 100 S18G28 29.72F FOG TC 7
PEORIA CLOUDY 41 39 93 S15 29.64F TC 5
LACON* CLOUDY 44 39 84 S14G20 29.63F TC 7
LINCOLN* CLOUDY 43 41 93 S17 29.68F FOG TC 6
SPRINGFIELD CLOUDY 46 45 96 S24G35 29.68F TC 8
TAYLORVILLE CLOUDY 48 47 97 S24 29.72F FOG TC 9
ILZ033-039-045-046-055>057-062-063-180900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 40 37 89 S18 29.75F TC 4
DANVILLE* CLOUDY 47 38 73 S17G25 29.78F TC 8
RANTOUL* CLOUDY 38 34 87 S16 29.74F WCI 29 TC 3
MATTOON CLOUDY 47 45 93 S13G23 29.77F TC 8
PARIS* CLOUDY 41 36 80 S15 29.80F TC 5
ILZ079-100>102-180900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 51 48 89 S17G25 29.72F TC 11
BELLEVILLE CLOUDY 53 50 90 S15 29.73F TC 12
CAHOKIA* CLOUDY 52 49 89 S12G23 29.72 TC 11
SPARTA* CLOUDY 51 49 92 S20G28 29.79F TC 11
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE LGT RAIN 51 48 89 S16 29.83F TC 11
CAIRO* CLOUDY 54 46 76 S10 29.88S TC 12
EFFINGHAM* CLOUDY 51 49 95 SE14G22 29.81F TC 10
MARION CLOUDY 51 46 85 S10 29.85F TC 10
MT. VERNON CLOUDY N/A N/A N/A S14 29.82F
CENTRALIA* N/A N/A N/A N/A MISG N/A
SALEM* CLOUDY 53 49 86 S14G24 29.80F TC 12
METROPOLIS* CLOUDY 53 43 66 CALM 29.89F TC 12
ILZ067-068-072-073-078-083-087-091-180900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 48 42 80 S14 29.86F TC 9
FLORA* CLOUDY 52 46 82 S16 29.83F TC 11
FAIRFIELD* CLOUDY 51 45 78 S9 29.86F TC 11
HARRISBURG* CLOUDY 54 44 70 S12G18 29.87F TC 12
ROBINSON* CLOUDY 50 43 76 S16 29.84F TC 10
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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