733
ASUS43 KLOT 210801
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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.
ILZ001-002-007-009-015-016-024-210900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 51 37 58 NE5 30.27R TC 11
STERLING* PTCLDY 49 33 54 NE10 30.29R TC 9
SAVANNA* PTCLDY 45 37 72 NE5 30.30R TC 7
ILZ003-004-008-010-011-017-018-210900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 48 32 53 VRB7 30.31R TC 9
FREEPORT* PTCLDY 44 38 80 NE7 30.32R TC 7
DE KALB* PTCLDY 46 35 65 NE10 30.28S TC 8
PERU* CLEAR 46 34 61 NE9 30.25F TC 8
ILZ005-006-012>014-019>023-210900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 50 33 52 NE10 30.27S TC 10
CHICAGO-MIDWAY PTCLDY 52 33 48 NE18 30.27R TC 11
AURORA MOCLDY 45 37 73 NE9 30.25F TC 7
JOLIET* CLOUDY 51 38 62 NE7 30.25F TC 11
WAUKEGAN MOCLDY 47 34 60 NE12 30.30R TC 8
DUPAGE AIRPORT MOCLDY 46 38 73 N8 30.26S TC 8
KANKAKEE* CLEAR 46 39 77 NE5 30.25S TC 8
WHEELING CLOUDY 49 35 58 NE9 30.30R TC 9
MORRIS* CLEAR 46 36 66 CALM 30.25S TC 8
LANSING* CLEAR 49 40 71 NE9 30.26R TC 10
NORTHERLY ISL* N/A 50 38 63 NE17 N/A TC 10
LMZ740>746-210900-
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 1023.7R 3/ 5
WAUKEGAN HARBOR 49 49 340/ 14/ 17 1024.7R 3/ 5
WILMETTE BUOY 50 90/ 17/ 23 1025.5F 4/ 5
CHICAGO BUOY 52 54 50/ 19/ 23 1023.4S 4/ 4
HARRISON CRIB 51 50/ 23/ 26 N/A
NORTHERLY ISL 51 30/ 16/ 20 N/A
CALUMET HARBOR 51 20/ 11/ 16 1024.7
BURNS HARBOR 53 60/ 10/ 11 1024.7S
MICHIGAN CITY 51 60/ 11/ 14 1023.7R
ST. JOSEPH BUOY 52 50/ 12/ 17 1025.3R 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-210900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 55 40 56 E10 30.20R TC 13
GALESBURG* PTCLDY 48 37 65 NE8 30.26R TC 9
MACOMB* CLOUDY 50 44 78 NE8 30.26S TC 10
JACKSONVILLE* CLOUDY 52 42 68 NE9 30.20S TC 11
ILZ028>032-037-038-041>044-048-051>054-059>061-210900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 45 37 71 MISG 30.24F TC 7
BLOOMINGTON CLEAR 45 36 70 NE9 30.23F TC 7
DECATUR PTCLDY 47 41 80 MISG 30.19F TC 8
PEORIA CLEAR 49 36 61 NE8 30.24R TC 9
LINCOLN* PTCLDY 49 39 69 NE10 30.21S TC 10
SPRINGFIELD LGT RAIN 50 40 68 N7 30.20R TC 10
TAYLORVILLE CLEAR 52 39 62 NE9 30.18F TC 11
ILZ033-039-045-046-055>057-062-063-210900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 48 38 68 NE10 30.19F TC 9
DANVILLE* PTCLDY 49 40 71 NE8 30.21F TC 10
MATTOON PTCLDY 50 42 74 N8 30.16F TC 10
PARIS* CLOUDY 52 42 67 N9 30.19S TC 11
ILZ079-100>102-210900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 55 46 71 N5 30.17R TC 13
CAHOKIA* CLEAR 57 49 74 NE6 30.14R TC 14
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 63 58 86 NE9 30.09F TC 17
EFFINGHAM* PTCLDY 53 46 76 N7 30.18S TC 12
MT. VERNON CLOUDY 59 55 87 NE5 30.13F TC 15
CENTRALIA* MOCLDY 58 50 74 NE3 30.13F TC 15
SALEM* MOCLDY 57 49 76 MISG 30.13F TC 14
ILZ067-068-072-073-078-083-087-091-210900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 60 53 77 NE8 30.13S TC 16
FLORA* MOCLDY 57 50 77 N9 30.14S TC 14
FAIRFIELD* CLOUDY 61 53 76 NE7 30.12F TC 16
HARRISBURG* CLOUDY 61 57 87 N7 30.12S TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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