801
ASUS43 KLOT 211811
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 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.
ILZ001-002-007-009-015-016-024-211900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 65 47 52 E12G20 30.22F TC 18
6HR MIN TEMP: 49; 6HR MAX TEMP: 65;
STERLING* MOSUNNY 67 47 48 E13G20 30.26R TC 19
SAVANNA* MOSUNNY 66 44 45 E10G16 30.27S TC 19
ILZ003-004-008-010-011-017-018-211900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 62 42 47 NE9 30.29S TC 17
6HR MIN TEMP: 47; 6HR MAX TEMP: 62;
FREEPORT* CLOUDY 62 41 46 NE13 30.30S TC 17
ROCHELLE* PTSUNNY 63 43 47 E12G17 30.28S TC 17
PERU* CLOUDY 66 46 48 E10 30.24F TC 19
ILZ005-006-012>014-019>023-211900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 55 43 63 NE12 30.29S TC 13
6HR MIN TEMP: 49; 6HR MAX TEMP: 56;
CHICAGO-MIDWAY PTSUNNY 58 45 62 NE14 30.29R TC 14
6HR MIN TEMP: 50; 6HR MAX TEMP: 59;
AURORA CLOUDY 60 47 61 E13 30.28R TC 16
6HR MIN TEMP: 49; 6HR MAX TEMP: 61;
WAUKEGAN CLOUDY 49 38 65 NE8 30.32S TC 9
6HR MIN TEMP: 46; 6HR MAX TEMP: 51;
DUPAGE AIRPORT CLOUDY 58 46 64 NE12 30.28S TC 14
6HR MIN TEMP: 48; 6HR MAX TEMP: 59;
WHEELING CLOUDY 50 40 68 NE9 30.32S TC 10
6HR MIN TEMP: 47; 6HR MAX TEMP: 53;
MORRIS* PTSUNNY 64 46 52 E9G22 30.24F TC 18
ROMEOVILLE* MOSUNNY 63 48 59 NE13G23 30.27S TC 17
LANSING* MOSUNNY 61 49 63 N12G17 30.27S TC 16
NORTHERLY ISL* N/A 55 47 74 N9 N/A TC 13
LMZ740>746-211900-
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 49 1023.6 2/ 4
WAUKEGAN HARBOR 47 48 340/ 12/ 16 1025.2 2/ 4
WILMETTE BUOY 49 90/ 17/ 23 1026.6R 3/ 5
CHICAGO BUOY 51 54 20/ 17/ 21 1024.7 3/ 5
HARRISON CRIB 49 20/ 16/ 17 N/A
NORTHERLY ISL 53 10/ 8/ 15 N/A
CALUMET HARBOR 52 340/ 13/ 18 1025.6R
BURNS HARBOR 52 10/ 8/ 11 1025.4R
MICHIGAN CITY 54 360/ 18/ 20 1024.3R
ST. JOSEPH BUOY 53 10/ 14/ 17 1025.9R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-211900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY SUNNY 66 49 54 E9 30.17F TC 19
PITTSFIELD* SUNNY 69 51 52 NE9 30.16F TC 21
ILZ028>032-037-038-041>044-048-051>054-059>061-211900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOSUNNY 69 45 41 E21G28 30.20F TC 21
DECATUR CLOUDY 68 45 43 E16G23 30.17F TC 20
PEORIA PTSUNNY 68 47 46 E14G23 30.19F TC 20
6HR MIN TEMP: 50; 6HR MAX TEMP: 68;
LACON* PTSUNNY 68 45 43 E10G17 30.21F TC 20
SPRINGFIELD MOSUNNY 70 46 42 NE21G28 30.15F TC 21
6HR MIN TEMP: 51; 6HR MAX TEMP: 71; 6HR PCP: TRACE;
TAYLORVILLE PTSUNNY 66 52 59 NE15G21 30.15F TC 19
ILZ033-039-045-046-055>057-062-063-211900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 67 45 45 E18 30.17F TC 19
RANTOUL* PTSUNNY 67 41 38 E20G25 30.19F TC 20
MATTOON CLOUDY 62 49 62 E15 30.15F TC 17
ILZ079-100>102-211900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTSUNNY 68 55 64 E10 30.13F TC 20
CAHOKIA* CLOUDY 67 56 67 NE8 30.13S TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 66 58 75 NE7 30.11F TC 19
6HR MIN TEMP: 59; 6HR MAX TEMP: 66;
EFFINGHAM* CLOUDY 64 52 64 NE7 30.17F TC 18
MARION CLOUDY 64 57 77 N10 30.11F TC 18
MT. VERNON CLOUDY 63 57 81 NE10 30.14S TC 17
SALEM* CLOUDY 64 57 79 MISG 30.15S TC 18
METROPOLIS* CLOUDY 66 62 86 N6 30.09S TC 19
ILZ067-068-072-073-078-083-087-091-211900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 65 53 65 E13 30.15S TC 18
FAIRFIELD* CLOUDY 63 56 79 E8 30.14R TC 17
ROBINSON* CLOUDY 64 54 68 E13 30.15F TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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