297
ASUS43 KLOT 212010
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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.
ILZ001-002-007-009-015-016-024-212100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 68 48 48 NE14 30.18F TC 20
STERLING* MOSUNNY 69 45 41 E17G23 30.21F TC 21
SAVANNA* CLOUDY 68 43 40 NE9 30.22F TC 20
ILZ003-004-008-010-011-017-018-212100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 65 43 44 NE9G17 30.26F TC 18
FREEPORT* PTSUNNY 62 42 48 NE15 30.26F TC 17
ROCHELLE* MOSUNNY 67 42 40 E15G22 30.23F TC 19
DE KALB* MOSUNNY 63 45 52 E17 30.26S TC 17
PERU* MOSUNNY 68 46 45 NE12G20 30.20S TC 20
ILZ005-006-012>014-019>023-212100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 57 43 59 NE18G24 30.26F TC 14
CHICAGO-MIDWAY PTSUNNY 60 44 55 NE15 30.24F TC 16
AURORA MOSUNNY 63 46 54 NE15G24 30.23F TC 17
JOLIET* MOSUNNY 66 49 53 NE16 30.22F TC 19
WAUKEGAN N/A 51 41 68 NE10 30.29F TC 11
DUPAGE AIRPORT MOSUNNY 59 46 62 NE15 30.25F TC 15
KANKAKEE* PTSUNNY 70 40 33 E14G20 30.20F TC 21
WHEELING MOSUNNY 55 42 61 NE10G21 30.29F TC 13
MORRIS* MOSUNNY 68 46 45 E8 30.20F TC 20
ROMEOVILLE* SUNNY 64 48 55 NE16G26 30.23F TC 18
LANSING* PTSUNNY 60 42 51 NE15G21 30.24F TC 16
NORTHERLY ISL* N/A 55 45 68 N15 N/A TC 13
LMZ740>746-212100-
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 1024.9 3/ 4
WAUKEGAN HARBOR 47 48 340/ 16/ 19 1024.2 2/ 3
WILMETTE BUOY 48 70/ 19/ 23 1025.7F 3/ 4
CHICAGO BUOY 52 55 30/ 17/ 23 1023.2 3/ 5
HARRISON CRIB 51 30/ 19/ 20 N/A
NORTHERLY ISL 55 30/ 12/ 13 N/A
CALUMET HARBOR 54 10/ 11/ 17 1024.9
BURNS HARBOR 54 30/ 9/ 12 1024.7F
MICHIGAN CITY 54 20/ 18/ 20 1023.8F
ST. JOSEPH BUOY 53 10/ 14/ 16 1025.1F 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-212100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 71 50 47 E14 30.12F TC 22
GALESBURG* PTSUNNY 69 49 50 E6 30.17F TC 20
MACOMB* PTSUNNY 72 48 42 E9 30.17F TC 22
JACKSONVILLE* SUNNY 72 48 42 NE14G20 30.12F TC 22
PITTSFIELD* MOSUNNY 73 48 42 E12 30.13F TC 23
ILZ028>032-037-038-041>044-048-051>054-059>061-212100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTSUNNY 72 41 32 MISG 30.18F TC 22
BLOOMINGTON PTSUNNY 71 40 32 E20G26 30.16F TC 22
DECATUR CLOUDY 66 46 48 E16G23 30.14F TC 19
PEORIA MOSUNNY 71 44 37 E14G23 30.16F TC 22
LACON* CLOUDY 71 44 38 E14G23 30.17F TC 21
LINCOLN* PTSUNNY 73 45 36 E15G25 30.13F TC 23
SPRINGFIELD MOSUNNY 72 45 37 E15G25 30.12F TC 22
TAYLORVILLE CLOUDY 66 52 59 E13G20 30.13F TC 19
ILZ033-039-045-046-055>057-062-063-212100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 66 43 43 E16G25 30.16F TC 19
DANVILLE* CLOUDY 68 42 39 E15G21 30.18F TC 20
RANTOUL* CLOUDY 67 41 38 E14G22 30.16F TC 20
MATTOON CLOUDY 65 52 62 E14 30.12F TC 18
PARIS* CLOUDY 67 51 56 E14 30.15S TC 19
ILZ079-100>102-212100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 68 57 68 E9 30.11F TC 20
CAHOKIA* CLOUDY 68 56 65 NE9 30.10F TC 20
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-212100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 66 59 77 NE9 30.07F TC 19
CAIRO* CLOUDY 67 63 85 N8 30.06S TC 20
EFFINGHAM* CLOUDY 66 55 68 NE9 30.13F TC 19
MARION CLOUDY 64 59 82 NE6 30.08F TC 18
MT. VERNON CLOUDY 65 58 78 NE8 30.09F TC 18
CENTRALIA* CLOUDY 65 57 75 CALM 30.10F TC 18
SALEM* CLOUDY 65 58 78 MISG 30.11F TC 18
METROPOLIS* CLOUDY 66 62 88 N7 30.05F TC 19
ILZ067-068-072-073-078-083-087-091-212100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 68 55 63 NE14 30.10F TC 20
FLORA* CLOUDY 66 55 68 NE9 30.10F TC 19
FAIRFIELD* CLOUDY 65 56 73 NE8 30.08F TC 19
HARRISBURG* CLOUDY 65 60 85 NE7 30.08F TC 18
ROBINSON* CLOUDY 66 57 72 E12 30.10F TC 19
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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