351
ASUS43 KLOT 220010
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 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.
ILZ001-002-007-009-015-016-024-220100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 67 47 48 E14 30.11F TC 19
6HR MIN TEMP: 65; 6HR MAX TEMP: 71;
STERLING* PTSUNNY 65 41 41 E15 30.16F TC 18
SAVANNA* PTSUNNY 61 43 51 NE10 30.16F TC 16
ILZ003-004-008-010-011-017-018-220100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 60 42 51 VRB7G18 30.22S TC 16
6HR MIN TEMP: 60; 6HR MAX TEMP: 65;
FREEPORT* PTSUNNY 59 45 60 E13 30.21F TC 15
ROCHELLE* PTSUNNY 61 40 45 E14 30.19S TC 16
DE KALB* PTSUNNY 58 43 56 E15G21 30.21S TC 15
PERU* PTSUNNY 66 45 45 E16 30.16S TC 19
ILZ005-006-012>014-019>023-220100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 53 37 54 NE14 30.22F TC 12
6HR MIN TEMP: 53; 6HR MAX TEMP: 58;
CHICAGO-MIDWAY PTSUNNY 55 37 50 NE13 30.22S TC 13
6HR MIN TEMP: 55; 6HR MAX TEMP: 61;
AURORA PTSUNNY 59 43 55 NE15 30.19F TC 15
6HR MIN TEMP: 59; 6HR MAX TEMP: 63;
JOLIET* PTSUNNY 61 43 52 NE10G20 30.19S TC 16
WAUKEGAN MOSUNNY 49 37 63 NE14G22 30.23F TC 9
6HR MIN TEMP: 48; 6HR MAX TEMP: 54;
DUPAGE AIRPORT PTSUNNY 56 40 55 NE15 30.21S TC 13
6HR MIN TEMP: 56; 6HR MAX TEMP: 61;
KANKAKEE* CLOUDY 61 42 50 NE17 30.17S TC 16
WHEELING MOSUNNY 50 37 61 NE10G18 30.24F TC 10
6HR MIN TEMP: 50; 6HR MAX TEMP: 56;
MORRIS* PTSUNNY 61 43 51 E10G16 30.17F TC 16
ROMEOVILLE* SUNNY 59 45 58 NE14G20 30.20S TC 15
LANSING* PTSUNNY 52 41 67 N10 30.21S TC 11
NORTHERLY ISL* N/A 50 40 68 MISG N/A TC 10
LMZ740>746-220100-
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 48 51 170/ 17/ 21 1025.0 3/ 4
WAUKEGAN HARBOR 48 49 340/ 17/ 23 1022.5 3/ 4
WILMETTE BUOY 49 50/ 21/ 27 1023.6F 4/ 5
CHICAGO BUOY 50 55 350/ 17/ 21 1022.0 4/ 5
HARRISON CRIB 49 360/ 20/ 21 N/A
NORTHERLY ISL 50 350/ 15/ 17 N/A
CALUMET HARBOR 51 1023.2F
BURNS HARBOR 50 30/ 8/ 9 1023.4F
MICHIGAN CITY 51 20/ 15/ 15 1022.1F
ST. JOSEPH BUOY 52 360/ 10/ 12 1023.1F 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-220100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 69 48 47 E7 30.06F TC 21
GALESBURG* PTSUNNY 68 45 42 E9 30.12S TC 20
MACOMB* CLOUDY 71 44 38 E16 30.12F TC 22
JACKSONVILLE* CLOUDY 67 47 49 E17 30.09F TC 19
PITTSFIELD* CLOUDY 70 49 46 E6 30.08F TC 21
ILZ028>032-037-038-041>044-048-051>054-059>061-220100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 64 45 49 MISG 30.16R TC 18
BLOOMINGTON CLOUDY 66 41 40 E16 30.14S TC 19
DECATUR CLOUDY 65 47 52 E14G22 30.11S TC 18
PEORIA PTSUNNY 68 36 30 E12G23 30.12R TC 20
6HR MIN TEMP: 68; 6HR MAX TEMP: 72;
LACON* PTSUNNY 66 44 43 E16 30.13S TC 19
LINCOLN* CLOUDY 67 47 48 E16 30.12S TC 20
SPRINGFIELD CLOUDY 66 45 46 E13 30.10F TC 19
6HR MIN TEMP: 66; 6HR MAX TEMP: 74;
TAYLORVILLE CLOUDY 64 48 55 NE8 30.10S TC 18
ILZ033-039-045-046-055>057-062-063-220100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 66 45 46 E18G25 30.11F TC 19
DANVILLE* CLOUDY 67 41 39 E12G17 30.14S TC 19
RANTOUL* CLOUDY 65 40 39 E17 30.13S TC 19
MATTOON CLOUDY 65 52 62 MISG 30.09F TC 18
PARIS* CLOUDY 65 48 52 E7 30.11F TC 19
ILZ079-100>102-220100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 64 57 77 E9 30.08S TC 18
CAHOKIA* CLOUDY 65 57 75 E8 30.06S TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-220100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 66 59 78 NE7 30.04S TC 19
6HR MIN TEMP: 65; 6HR MAX TEMP: 67;
CAIRO* CLOUDY 67 63 85 NE6 30.03R TC 20
EFFINGHAM* CLOUDY 65 57 75 NE6 30.10S TC 18
MARION CLOUDY 66 61 82 NE6 30.05S TC 19
MT. VERNON CLOUDY 66 58 75 NE8 30.06S TC 19
CENTRALIA* CLOUDY 65 57 73 CALM 30.07S TC 19
SALEM* CLOUDY 66 58 73 MISG 30.07S TC 19
METROPOLIS* CLOUDY 65 62 89 NE7 30.03S TC 19
ILZ067-068-072-073-078-083-087-091-220100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 67 57 70 NE7 30.07F TC 19
FLORA* PTSUNNY 66 57 72 NE6 30.08S TC 19
FAIRFIELD* CLOUDY 66 56 70 NE7 30.06F TC 19
HARRISBURG* CLOUDY 66 60 81 NE6 30.05S TC 19
ROBINSON* CLOUDY 66 57 72 NE7 30.08S TC 19
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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