556
ASUS43 KLOT 212212
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT THU MAY 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.
ILZ001-002-007-009-015-016-024-212300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 70 45 40 E13 30.14F TC 21
STERLING* SUNNY 70 40 33 E18G25 30.18F TC 21
SAVANNA* MOSUNNY 66 43 43 NE16 30.18F TC 19
ILZ003-004-008-010-011-017-018-212300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 62 43 49 NE10G17 30.23F TC 17
FREEPORT* SUNNY 62 45 53 NE17G24 30.22F TC 17
ROCHELLE* MOSUNNY 65 37 35 E14G22 30.20F TC 19
DE KALB* SUNNY 63 43 48 E15G22 30.22F TC 17
PERU* PTSUNNY 70 46 43 E12 30.17S TC 21
ILZ005-006-012>014-019>023-212300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 57 41 55 N15G26 30.23F TC 14
CHICAGO-MIDWAY PTSUNNY 60 41 49 NE17 30.22F TC 16
AURORA MOSUNNY 63 45 51 E17G24 30.20F TC 17
JOLIET* CLOUDY 65 46 50 NE13G20 30.20S TC 18
WAUKEGAN SUNNY 51 38 60 N13G23 30.26F TC 11
DUPAGE AIRPORT SUNNY 60 44 55 NE14G23 30.22F TC 16
KANKAKEE* MOSUNNY 68 45 42 NE20 30.17S TC 20
WHEELING MOSUNNY 55 42 61 NE12G18 30.25F TC 13
MORRIS* CLOUDY 64 45 48 E14 30.18S TC 18
ROMEOVILLE* MOSUNNY 63 45 51 NE17G23 30.21F TC 17
LANSING* SUNNY 60 42 51 NE12G20 30.22S TC 16
NORTHERLY ISL* N/A 54 43 66 N15 N/A TC 12
LMZ740>746-212300-
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)
WINTHROP HARBOR 50 1024.6 3/ 4
WAUKEGAN HARBOR 47 49 340/ 17/ 25 1023.3 3/ 4
WILMETTE BUOY 48 60/ 21/ 29 1024.5F 3/ 5
CHICAGO BUOY 51 55 10/ 19/ 25 1022.4 3/ 5
HARRISON CRIB 50 10/ 20/ 22 N/A
NORTHERLY ISL 55 350/ 12/ 15 N/A
CALUMET HARBOR 53 360/ 16/ 19 1023.7
BURNS HARBOR 53 50/ 10/ 11 1023.7F
MICHIGAN CITY 52 30/ 17/ 18 1022.6F
ST. JOSEPH BUOY 51 10/ 14/ 17 1023.6F 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-212300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 71 47 42 E9 30.09F TC 22
GALESBURG* SUNNY 71 45 38 E12G17 30.14F TC 22
MACOMB* SUNNY 73 46 38 E16 30.14S TC 23
JACKSONVILLE* SUNNY 72 48 42 NE15 30.09F TC 22
PITTSFIELD* SUNNY 72 47 41 E12 30.10F TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-212300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 72 39 30 MISG 30.15F TC 22
BLOOMINGTON CLOUDY 68 39 34 E16G22 30.15S TC 20
DECATUR CLOUDY 64 45 49 E18 30.13S TC 18
PEORIA CLOUDY 71 41 33 E15G23 30.12F TC 22
LACON* PTSUNNY 69 46 43 E10 30.13F TC 21
LINCOLN* CLOUDY 70 43 38 E16G24 30.13S TC 21
SPRINGFIELD PTSUNNY 71 45 39 E16 30.11S TC 22
TAYLORVILLE CLOUDY 63 52 67 E10 30.12F TC 17
ILZ033-039-045-046-055>057-062-063-212300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 66 45 46 E15 30.14R TC 19
DANVILLE* CLOUDY 67 43 41 E12G22 30.15S TC 19
RANTOUL* CLOUDY 66 40 38 E16G22 30.14S TC 19
MATTOON CLOUDY 67 54 63 NE13 30.10S TC 19
PARIS* CLOUDY 67 48 50 E14G21 30.12S TC 20
ILZ079-100>102-212300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTSUNNY 68 57 68 E13 30.08F TC 20
CAHOKIA* CLOUDY 67 58 72 E12 30.07F TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-212300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 67 59 75 E8 30.06F TC 19
CAIRO* CLOUDY 68 62 83 NE8 30.04F TC 20
EFFINGHAM* CLOUDY 66 57 71 NE5 30.11F TC 19
MARION CLOUDY 66 61 82 N6 30.07F TC 19
MT. VERNON CLOUDY 65 59 81 NE6 30.09F TC 18
CENTRALIA* CLOUDY 65 57 75 CALM 30.09F TC 18
SALEM* CLOUDY 66 58 74 MISG 30.10S TC 19
METROPOLIS* CLOUDY 65 62 89 N7 30.05F TC 19
ILZ067-068-072-073-078-083-087-091-212300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 69 57 65 E10 30.09S TC 21
FLORA* CLOUDY 66 55 68 NE8 30.10S TC 19
FAIRFIELD* CLOUDY 66 56 70 NE6 30.09S TC 19
HARRISBURG* CLOUDY 66 60 82 NE7 30.07F TC 19
ROBINSON* CLOUDY 68 59 73 NE10 30.09S TC 20
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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