618
ASUS43 KLOT 212110
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 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.
ILZ001-002-007-009-015-016-024-212200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 70 47 43 E13G21 30.15F TC 21
STERLING* MOSUNNY 69 42 37 E17G23 30.19F TC 21
SAVANNA* PTSUNNY 65 42 42 NE13G18 30.20F TC 18
ILZ003-004-008-010-011-017-018-212200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 63 42 46 VRB7G18 30.24F TC 17
FREEPORT* PTSUNNY 63 44 49 NE15G22 30.25F TC 17
ROCHELLE* MOSUNNY 65 40 39 NE14G21 30.21F TC 19
DE KALB* SUNNY 62 44 51 E15G25 30.23F TC 17
PERU* MOSUNNY 68 46 45 E10G16 30.18F TC 20
ILZ005-006-012>014-019>023-212200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 58 43 57 NE16 30.24F TC 14
CHICAGO-MIDWAY PTSUNNY 59 43 55 NE17 30.23F TC 15
AURORA SUNNY 63 45 51 NE17G25 30.21F TC 17
JOLIET* MOSUNNY 67 47 49 NE15 30.20F TC 19
WAUKEGAN MOSUNNY 54 40 59 NE8G20 30.27F TC 12
DUPAGE AIRPORT SUNNY 60 45 57 E15G24 30.23F TC 16
KANKAKEE* CLOUDY 71 40 33 E17G25 30.17F TC 22
WHEELING MOSUNNY 55 41 59 NE14 30.27F TC 13
MORRIS* PTSUNNY 66 45 45 E15G22 30.18F TC 19
ROMEOVILLE* SUNNY 64 46 52 NE16G23 30.22F TC 18
LANSING* MOSUNNY 60 43 54 NE15G21 30.23F TC 16
NORTHERLY ISL* N/A 55 45 68 N13 N/A TC 13
LMZ740>746-212200-
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/ 16/ 21 1023.6 3/ 4
WILMETTE BUOY 48 60/ 19/ 29 1025.3F 3/ 5
CHICAGO BUOY 52 55 20/ 19/ 23 1022.7 3/ 5
HARRISON CRIB 50 20/ 19/ 21 N/A
NORTHERLY ISL 56 340/ 12/ 16 N/A
CALUMET HARBOR 55 360/ 11/ 17 1024.3
BURNS HARBOR 53 40/ 9/ 11 1024.0F
MICHIGAN CITY 53 30/ 18/ 20 1023.1F
ST. JOSEPH BUOY 52 10/ 14/ 19 1024.7F 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-212200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTSUNNY 72 47 40 E14 30.10F TC 22
GALESBURG* MOSUNNY 70 47 44 NE13 30.15F TC 21
MACOMB* PTSUNNY 72 47 40 E10 30.15F TC 22
JACKSONVILLE* MOSUNNY 73 47 39 NE14 30.10F TC 23
PITTSFIELD* PTSUNNY 73 49 42 E8G16 30.11F TC 23
ILZ028>032-037-038-041>044-048-051>054-059>061-212200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 73 39 29 MISG 30.16F TC 23
BLOOMINGTON CLOUDY 69 38 32 E21 30.15F TC 21
DECATUR CLOUDY 65 46 50 E17G26 30.13F TC 18
PEORIA CLOUDY 71 43 36 E13 30.14F TC 22
LACON* CLOUDY 70 47 44 NE12 30.15F TC 21
LINCOLN* PTSUNNY 73 47 39 E16G24 30.13S TC 23
SPRINGFIELD MOSUNNY 72 46 39 E13G25 30.11F TC 22
TAYLORVILLE CLOUDY 64 52 63 E15G21 30.13S TC 18
ILZ033-039-045-046-055>057-062-063-212200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 66 44 45 E18G25 30.13F TC 19
DANVILLE* CLOUDY 68 44 40 E18 30.15F TC 20
RANTOUL* CLOUDY 67 42 39 E13G21 30.14F TC 20
MATTOON CLOUDY 67 53 61 E9 30.10F TC 19
PARIS* CLOUDY 67 49 51 NE10G22 30.12F TC 20
ILZ079-100>102-212200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 68 57 68 E9 30.11S TC 20
CAHOKIA* CLOUDY 69 58 67 E7 30.09F TC 21
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-212200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 66 59 78 N9 30.08R TC 19
CAIRO* CLOUDY 68 62 83 NE9 30.06S TC 20
EFFINGHAM* CLOUDY 66 56 68 NE5 30.13S TC 19
MARION CLOUDY 64 61 88 NE6 30.08S TC 18
MT. VERNON CLOUDY 65 58 78 N7 30.10R TC 18
CENTRALIA* CLOUDY 65 56 74 CALM 30.10S TC 18
SALEM* CLOUDY 66 58 75 MISG 30.10S TC 19
METROPOLIS* CLOUDY 65 62 87 N7 30.06S TC 19
ILZ067-068-072-073-078-083-087-091-212200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 69 56 62 NE12G20 30.09F TC 21
FLORA* CLOUDY 66 55 68 E12 30.10S TC 19
FAIRFIELD* CLOUDY 66 57 72 N6 30.08F TC 19
HARRISBURG* CLOUDY 66 60 81 NE7 30.08S TC 19
ROBINSON* CLOUDY 68 59 73 NE10 30.09F TC 20
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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