294
ASUS43 KLOT 181101
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 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.
ILZ001-002-007-009-015-016-024-181200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 45 42 89 S14G22 29.47F TC 7
STERLING* CLOUDY 42 42 100 S8 29.52F FOG TC 6
SAVANNA* CLOUDY 39 36 89 S14 29.49F WCI 30 TC 4
ILZ003-004-008-010-011-017-018-181200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD DRZL/FOG 38 38 100 S16G24 29.53F VSB 1/2 WCI 29
FREEPORT* CLOUDY 38 35 89 S20 29.50F VSB 1/4 WCI 28
DE KALB* LGT RAIN 37 37 100 S17 29.55F VSB 1/4 WCI 27
ILZ005-006-012>014-019>023-181200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 44 42 93 S16 29.58F TC 7
CHICAGO-MIDWAY CLOUDY 45 43 93 S18G26 29.61F TC 7
AURORA FOG 38 38 100 S12 29.59F VSB 1/2 WCI 30
JOLIET* CLOUDY 45 45 98 S10G17 29.61F FOG TC 7
WAUKEGAN CLOUDY 42 41 96 S15G28 29.55F TC 6
DUPAGE AIRPORT CLOUDY 40 40 100 S14G25 29.58F TC 4
WHEELING CLOUDY 43 42 97 S17 29.58F TC 6
MORRIS* LGT RAIN 41 41 100 S12G20 29.61F TC 5
LANSING* RAIN 43 39 86 S17G23 29.66F TC 6
NORTHERLY ISL* N/A 45 42 89 S16 N/A TC 7
LMZ740>746-181200-
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 44 190/ 23/ 24 N/A
NORTHERLY ISL 45 190/ 12/ 19 N/A
CALUMET HARBOR 44 160/ 12/ 16 1003.7
BURNS HARBOR 44 180/ 10/ 13 1005.4S
MICHIGAN CITY 44 170/ 18/ 23 1004.2F
ILZ025>027-034>036-040-047-049-050-058-095>099-181200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 53 49 86 S18G28 29.49F TC 12
MACOMB* CLOUDY 42 42 99 S15 29.51F TC 5
ILZ028>032-037-038-041>044-048-051>054-059>061-181200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC LGT RAIN 42 41 97 S17 29.62F TC 5
BLOOMINGTON LGT RAIN 42 42 100 S22 29.61F VSB 1/4 TC 6
DECATUR CLOUDY 49 46 90 S22G32 29.64F TC 9
PEORIA FOG 44 44 100 S10 29.57F VSB 3/4 TC 7
LACON* DRIZZLE 46 44 92 S14 29.57F TC 8
LINCOLN* CLOUDY 46 45 93 S16 29.61S TC 8
SPRINGFIELD CLOUDY 51 49 92 S21G33 29.61S TC 11
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 43 41 93 S20 29.68S TC 6
DANVILLE* CLOUDY 47 42 81 S17G25 29.71F TC 9
RANTOUL* CLOUDY 38 37 96 S13 29.68F WCI 30 TC 4
MATTOON CLOUDY 49 45 86 S17G31 29.69F TC 9
PARIS* CLOUDY 43 38 84 S16G24 29.73F TC 6
ILZ079-100>102-181200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BELLEVILLE CLOUDY 53 50 90 S24G31 29.64F TC 12
CAHOKIA* CLOUDY 52 50 93 S14 29.63F TC 11
SPARTA* CLOUDY 52 49 91 S16G26 29.71F TC 11
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 52 47 83 S17G26 29.74F TC 11
CAIRO* CLOUDY 55 46 71 S15 29.79F TC 13
EFFINGHAM* CLOUDY 51 47 87 SE10G17 29.73F TC 11
MT. VERNON CLOUDY N/A N/A N/A S15G25 29.74F
CENTRALIA* N/A N/A N/A N/A MISG N/A
SALEM* CLOUDY 54 47 80 S15 29.70F TC 12
METROPOLIS* CLOUDY 54 41 61 CALM 29.82F TC 12
ILZ067-068-072-073-078-083-087-091-181200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 48 40 73 S18 29.78F TC 9
FLORA* CLOUDY 52 45 76 S15 29.74F TC 11
FAIRFIELD* CLOUDY 53 43 70 S12G17 29.76F TC 12
HARRISBURG* CLOUDY 53 42 65 S15 29.78F TC 12
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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