308
ASUS43 KLOT 182101
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 PM CDT WED MAR 18 2026
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.
ILZ001-002-007-009-015-016-024-182200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE SUNNY 47 32 56 W7 29.98R TC 8
STERLING* SUNNY 44 31 60 W7 30.00R TC 7
SAVANNA* SUNNY 41 28 61 W6 30.00R TC 5
ILZ003-004-008-010-011-017-018-182200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD SUNNY 39 26 59 SW7 30.00R WCI 34 TC 4
FREEPORT* SUNNY 38 27 66 SW7 29.99F WCI 32 TC 3
DE KALB* SUNNY 40 30 68 W6 29.99R TC 4
ILZ005-006-012>014-019>023-182200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOSUNNY 44 29 55 W7 29.97R TC 7
CHICAGO-MIDWAY PTSUNNY 46 30 53 SW9 29.98R TC 8
AURORA SUNNY 43 31 62 W9 29.98R TC 6
JOLIET* SUNNY 49 32 52 SW7 29.99R TC 9
WAUKEGAN CLOUDY 39 26 59 W8 29.97R WCI 33 TC 4
DUPAGE AIRPORT SUNNY 43 31 62 W8 29.97R TC 6
WHEELING CLOUDY 42 27 55 SW6 29.98S TC 6
MORRIS* SUNNY 47 33 58 SW5 29.97R TC 8
ROMEOVILLE* SUNNY 46 34 61 SW6G13 29.98S TC 8
LANSING* PTSUNNY 46 31 57 SW9 29.99S TC 8
NORTHERLY ISL* N/A 43 27 53 SW6 N/A TC 6
LMZ740>746-182200-
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 42 250/ 5/ 7 N/A
NORTHERLY ISL 42 220/ 7/ 17 N/A
CALUMET HARBOR 190/ 8/ 13 1014.7
BURNS HARBOR 43 190/ 7/ 9 1016.3F
MICHIGAN CITY 40 200/ 10/ 13 1015.8F
ILZ025>027-034>036-040-047-049-050-058-095>099-182200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 60 38 43 SW8 29.98S TC 16
MACOMB* SUNNY 56 41 55 W13 30.00R TC 14
PITTSFIELD* SUNNY 62 37 38 W6 29.99S TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-182200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC SUNNY 52 34 51 E12 29.97S TC 11
BLOOMINGTON SUNNY 54 36 50 SW16 29.97S TC 12
DECATUR SUNNY 56 36 47 SW13G24 29.98F TC 13
PEORIA SUNNY 54 33 45 SW6 29.97S TC 12
LACON* SUNNY 50 31 49 W7 29.98S TC 10
LINCOLN* SUNNY 58 32 36 SW8 29.98R TC 15
SPRINGFIELD SUNNY 60 38 43 SW10 29.98S TC 16
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-182200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 54 37 52 SW17G28 29.99R TC 12
DANVILLE* SUNNY 52 35 52 S17G24 30.00S TC 11
MATTOON SUNNY 54 34 46 SW15 29.99F TC 12
PARIS* SUNNY 52 35 52 SW17 30.01F TC 11
ILZ079-100>102-182200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 64 34 32 SW9 29.99F TC 18
BELLEVILLE SUNNY 68 36 31 SW8 29.98F TC 20
CAHOKIA* SUNNY 68 32 26 VRB5 29.98F TC 20
SPARTA* SUNNY 64 35 34 S8 30.03S TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 60 36 40 SW13 30.05S TC 16
CAIRO* SUNNY 62 37 40 SW15G21 30.08S TC 17
EFFINGHAM* SUNNY 58 36 43 S9 30.03F TC 15
MARION SUNNY 61 36 39 W14 30.05R TC 16
MT. VERNON N/A 61 37 41 SW14G23 30.03F TC 16
CENTRALIA* SUNNY 61 36 39 SW13G18 30.02F TC 16
SALEM* SUNNY 61 37 40 SW12G18 30.02S TC 16
ILZ067-068-072-073-078-083-087-091-182200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 57 32 38 SW16 30.04F TC 14
FLORA* SUNNY 59 36 41 SW12G17 30.02F TC 15
FAIRFIELD* SUNNY 59 32 36 SW10G17 30.03F TC 15
HARRISBURG* SUNNY 61 31 32 SW13 30.06R TC 16
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