201
ASUS43 KLOT 182201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 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.
ILZ001-002-007-009-015-016-024-182300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE SUNNY 49 32 52 CALM 29.98S TC 9
STERLING* SUNNY 44 31 60 SW9 30.00S TC 7
SAVANNA* SUNNY 42 30 61 W3 29.99S TC 6
ILZ003-004-008-010-011-017-018-182300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOSUNNY 39 27 62 NW10 29.99F WCI 32 TC 4
FREEPORT* SUNNY 38 29 68 SW7 30.00R WCI 33 TC 4
ROCHELLE* SUNNY 41 31 68 SW10 29.98F TC 5
DE KALB* SUNNY 39 30 69 W7 29.99S WCI 34 TC 4
PERU* SUNNY 48 35 61 W6 29.99S TC 9
ILZ005-006-012>014-019>023-182300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE SUNNY 46 30 53 SW10 29.97S TC 8
CHICAGO-MIDWAY MOSUNNY 47 30 51 SW8 29.98S TC 8
AURORA SUNNY 44 32 62 W8 29.98S TC 7
JOLIET* SUNNY 49 34 54 W7 29.99S TC 10
WAUKEGAN SUNNY 40 28 62 W10 29.96F TC 4
DUPAGE AIRPORT SUNNY 43 32 65 W10 29.97S TC 6
WHEELING SUNNY 44 29 55 SW9 29.98S TC 7
MORRIS* SUNNY 48 33 57 W8 29.99S TC 9
ROMEOVILLE* SUNNY 46 36 66 W9G16 29.99R TC 8
LANSING* MOSUNNY 47 32 56 SW9 29.99S TC 8
NORTHERLY ISL* N/A 46 27 47 SW6 N/A TC 8
LMZ740>746-182300-
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 44 240/ 2/ 3 N/A
NORTHERLY ISL 44 250/ 4/ 12 N/A
CALUMET HARBOR 45 200/ 8/ 13 1014.7
BURNS HARBOR 45 220/ 6/ 9 1016.3S
MICHIGAN CITY 43 190/ 8/ 11 1015.9R
ILZ025>027-034>036-040-047-049-050-058-095>099-182300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 61 39 44 W7 29.98S TC 16
GALESBURG* SUNNY 50 41 71 W6 N/A TC 10
MACOMB* MOSUNNY 56 42 58 W9 30.01R TC 13
JACKSONVILLE* MOSUNNY 63 37 38 W7 29.98S TC 17
PITTSFIELD* MOSUNNY 64 37 37 W6 30.00S TC 18
ILZ028>032-037-038-041>044-048-051>054-059>061-182300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON SUNNY 55 38 52 W13 30.00R TC 13
DECATUR SUNNY 59 37 44 SW16 30.00R TC 15
PEORIA SUNNY 55 36 48 W6 29.99R TC 13
LACON* SUNNY 51 34 51 NW8 30.00R TC 11
LINCOLN* SUNNY 60 32 34 W9 29.99R TC 16
SPRINGFIELD SUNNY 61 39 44 W10 29.99R TC 16
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-182300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 55 38 52 SW15 30.00R TC 13
DANVILLE* SUNNY 54 36 51 SW16 30.01R TC 12
MATTOON SUNNY 56 35 45 SW12G21 30.00R TC 13
PARIS* SUNNY 53 36 52 SW12 30.02R TC 12
ILZ079-100>102-182300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 66 34 30 W8 30.00R TC 19
BELLEVILLE SUNNY 68 36 30 S7 29.98S TC 20
CAHOKIA* SUNNY 69 32 25 S5 29.98S TC 21
SPARTA* SUNNY 64 35 34 S8 30.03S TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 60 37 42 S13 30.05S TC 16
CAIRO* SUNNY 63 38 39 S8 30.08S TC 17
EFFINGHAM* SUNNY 59 37 43 SW10 30.03S TC 15
MARION SUNNY 61 36 39 SW14 30.05S TC 16
MT. VERNON N/A 61 39 44 SW15 30.03S TC 16
CENTRALIA* SUNNY 63 37 38 SW10 30.02S TC 17
SALEM* SUNNY 63 38 39 SW9 30.01S TC 17
METROPOLIS* SUNNY 61 32 33 SW10 30.08S TC 16
ILZ067-068-072-073-078-083-087-091-182300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 58 32 37 SW9 30.04S TC 14
FLORA* SUNNY 61 36 39 W8 30.03R TC 16
FAIRFIELD* SUNNY 60 33 36 SW13 30.03S TC 16
HARRISBURG* SUNNY 61 31 32 SW13 30.06S TC 16
ROBINSON* SUNNY 57 36 44 SW13 30.02S TC 14
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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