201
ASUS43 KLOT 220401
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 PM CDT SAT MAR 21 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.
ILZ001-002-007-009-015-016-024-220500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 74 44 34 S14 29.60F TC 23
STERLING* PTCLDY 68 47 46 VRB5 29.62F TC 20
SAVANNA* PTCLDY 55 47 73 S8 29.60F TC 13
ILZ003-004-008-010-011-017-018-220500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 64 46 52 S12 29.61F TC 18
FREEPORT* PTCLDY 69 44 40 SW20 29.61F TC 21
DE KALB* PTCLDY 66 48 52 SW14 29.63F TC 19
PERU* CLEAR 70 47 44 SW14 29.65S TC 21
ILZ005-006-012>014-019>023-220500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 71 44 37 S10G20 29.61F TC 22
CHICAGO-MIDWAY MOCLDY 71 45 39 SW16G29 29.63F TC 22
AURORA CLEAR 68 45 43 SW18 29.62F TC 20
JOLIET* CLEAR 70 47 44 S10 29.65F TC 21
WAUKEGAN PTCLDY 63 46 54 SW9 29.59F TC 17
DUPAGE AIRPORT PTCLDY 69 45 41 SW14 29.62F TC 21
WHEELING PTCLDY 72 44 36 SW9 29.62F TC 22
MORRIS* CLEAR 69 47 46 SW17 29.64F TC 21
ROMEOVILLE* CLEAR 68 48 49 S15G21 29.65S TC 20
LANSING* PTCLDY 66 46 47 SW17 29.66F TC 19
NORTHERLY ISL* N/A 73 41 31 S13 N/A TC 23
LMZ740>746-220500-
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 74 210/ 22/ 25 N/A
NORTHERLY ISL 72 200/ 8/ 11 N/A
CALUMET HARBOR 72 200/ 10/ 16 1003.4
BURNS HARBOR 66 200/ 9/ 11 1004.4F
MICHIGAN CITY 71 190/ 17/ 19 1002.2F
ILZ025>027-034>036-040-047-049-050-058-095>099-220500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 73 45 36 S8 29.70F TC 23
MACOMB* CLEAR 70 47 44 S13 29.70F TC 21
PITTSFIELD* CLEAR 72 50 46 S7 29.73S TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-220500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 67 45 44 MISG 29.69F TC 20
BLOOMINGTON CLEAR 61 49 64 S13 29.73F TC 16
DECATUR CLEAR 65 48 54 S10 29.75F TC 18
PEORIA CLEAR 68 48 48 S12 29.69F TC 20
LACON* CLEAR 71 44 37 SW10 29.66F TC 22
LINCOLN* CLEAR 65 47 51 S5 29.73S TC 19
SPRINGFIELD CLEAR 70 51 51 S13 29.73F TC 21
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-220500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 62 50 64 S14 29.75F TC 17
DANVILLE* PTCLDY 65 49 54 SW13 29.76F TC 19
MATTOON PTCLDY 68 51 54 S8 29.77F TC 20
PARIS* PTCLDY 61 49 64 CALM 29.78S TC 16
ILZ079-100>102-220500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BELLEVILLE CLEAR 71 59 64 SW6 29.75F TC 22
CAHOKIA* CLEAR 67 56 67 CALM 29.75F TC 19
SPARTA* CLEAR 74 58 57 S10 29.79F TC 23
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-220500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 70 58 65 S9 29.80S TC 21
CAIRO* CLEAR 73 60 64 S7 29.84S TC 23
EFFINGHAM* CLEAR 66 55 66 SE7 29.80F TC 19
MARION CLEAR 68 56 66 S6 29.82S TC 20
MT. VERNON N/A 63 56 78 CALM 29.80F TC 17
CENTRALIA* CLEAR 68 55 62 S10 29.79S TC 20
SALEM* CLEAR 71 55 56 S8 29.79F TC 22
ILZ067-068-072-073-078-083-087-091-220500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 61 52 72 S7 29.80S TC 16
FLORA* CLEAR 63 55 77 SE6 29.80S TC 17
FAIRFIELD* CLEAR 68 55 64 S6 29.80F TC 20
HARRISBURG* CLEAR 64 56 74 CALM 29.82S TC 18
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