815
ASUS43 KLOT 210610
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 AM 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.
ILZ001-002-007-009-015-016-024-210700-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 50 38 63 E9 30.26S TC 10
6HR MIN TEMP: 50; 6HR MAX TEMP: 65;
STERLING* PTCLDY 47 34 60 E9 30.28S TC 8
SAVANNA* PTCLDY 48 36 63 CALM 30.29S TC 9
ILZ003-004-008-010-011-017-018-210700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 48 33 56 VRB3 30.30F TC 9
6HR MIN TEMP: 48; 6HR MAX TEMP: 59;
FREEPORT* PTCLDY 45 39 79 E6 30.31S TC 7
ROCHELLE* PTCLDY 47 32 55 NE8 30.29S TC 8
DE KALB* PTCLDY 45 34 66 NE9 30.28F TC 7
PERU* PTCLDY 48 36 61 N7 30.27S TC 9
ILZ005-006-012>014-019>023-210700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 49 35 58 NE10 30.27F TC 9
6HR MIN TEMP: 48; 6HR MAX TEMP: 54;
CHICAGO-MIDWAY PTCLDY 51 37 58 NE13 30.27S TC 11
6HR MIN TEMP: 50; 6HR MAX TEMP: 56;
AURORA PTCLDY 46 36 68 NE9 30.26S TC 8
6HR MIN TEMP: 44; 6HR MAX TEMP: 56;
JOLIET* CLEAR 49 36 60 NE7 30.26S TC 10
WAUKEGAN PTCLDY 48 37 65 NE7 30.29R TC 9
6HR MIN TEMP: 44; 6HR MAX TEMP: 50;
DUPAGE AIRPORT PTCLDY 44 37 76 N7 30.26F TC 7
6HR MIN TEMP: 41; 6HR MAX TEMP: 53;
KANKAKEE* CLEAR 47 36 65 NE7 30.26R TC 8
WHEELING PTCLDY 48 37 65 NE5 30.29F TC 9
6HR MIN TEMP: 45; 6HR MAX TEMP: 52;
MORRIS* CLEAR 46 34 61 CALM 30.26R TC 8
ROMEOVILLE* MOCLDY 48 36 61 N13 30.27R TC 9
LANSING* CLEAR 48 38 69 NE5 30.26F TC 9
NORTHERLY ISL* N/A 51 40 65 N17 N/A TC 11
LMZ740>746-210700-
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 1023.4 3/ 4
WAUKEGAN HARBOR 49 50 340/ 10/ 14 1024.4 2/ 4
WILMETTE BUOY 51 90/ 16/ 21 1025.5F 3/ 5
CHICAGO BUOY 53 54 60/ 19/ 25 1023.5 3/ 4
HARRISON CRIB 52 50/ 23/ 26 N/A
NORTHERLY ISL 50 10/ 11/ 12 N/A
CALUMET HARBOR 51 10/ 8/ 10 1024.9R
BURNS HARBOR 52 40/ 8/ 10 1024.7S
MICHIGAN CITY 52 30/ 15/ 16 1023.3R
ST. JOSEPH BUOY 53 50/ 14/ 16 1024.9R 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-210700-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 56 46 69 E8 30.18S TC 13
GALESBURG* CLEAR 51 38 61 E12G21 30.25S TC 11
MACOMB* PTCLDY 53 46 76 E10 30.25S TC 12
JACKSONVILLE* PTCLDY 54 45 71 E10 30.20F TC 12
PITTSFIELD* MOCLDY 58 46 64 E8 30.19S TC 14
ILZ028>032-037-038-041>044-048-051>054-059>061-210700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 47 37 67 MISG 30.25S TC 8
BLOOMINGTON CLEAR 47 38 71 NE10 30.24F TC 8
DECATUR MOCLDY 49 41 74 MISG 30.21F TC 9
PEORIA CLEAR 51 39 63 NE12 30.24F TC 11
6HR MIN TEMP: 50; 6HR MAX TEMP: 67;
LACON* CLEAR 47 35 63 CALM 30.26S TC 9
LINCOLN* CLEAR 51 40 66 NE8 30.23S TC 11
SPRINGFIELD LGT RAIN 53 39 59 NE10 30.21F TC 12
6HR MIN TEMP: 53; 6HR MAX TEMP: 69; 6HR PCP: TRACE;
TAYLORVILLE CLOUDY 54 41 62 NE10 30.21S TC 12
ILZ033-039-045-046-055>057-062-063-210700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 50 37 61 NE14 30.21S TC 10
DANVILLE* PTCLDY 51 39 64 NE8 30.22S TC 11
RANTOUL* PTCLDY 49 35 58 NE14 30.22S TC 10
MATTOON MOCLDY 53 42 66 NE9 30.18S TC 12
PARIS* MOCLDY 53 40 62 NE7 30.19S TC 12
ILZ079-100>102-210700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 60 47 62 NE7 30.17F TC 16
BELLEVILLE PTCLDY 61 57 89 N7 30.13F TC 16
CAHOKIA* PTCLDY 62 54 74 NE8 30.15F TC 17
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210700-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 64 61 90 NE3 30.11R TC 18
EFFINGHAM* MOCLDY 56 48 76 N7 30.19S TC 13
MARION CLOUDY 62 59 91 N5 30.13S TC 17
MT. VERNON CLOUDY 61 54 77 NE7 30.15R TC 16
SALEM* MOCLDY 60 57 89 MISG 30.15F TC 16
METROPOLIS* CLOUDY 62 62 100 N8 30.10S TC 17
ILZ067-068-072-073-078-083-087-091-210700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 61 54 77 NE13 30.14F TC 16
FLORA* CLOUDY 61 55 82 N8 30.16R TC 16
FAIRFIELD* CLOUDY 61 53 74 N8 30.13S TC 16
HARRISBURG* CLOUDY 62 57 83 NE5 30.13S TC 17
ROBINSON* CLOUDY 61 57 88 N8 30.15F TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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