777
ASUS43 KLOT 210410
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 PM CDT WED MAY 20 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.
ILZ001-002-007-009-015-016-024-210500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 56 40 55 E12 30.25R TC 13
STERLING* PTCLDY 50 34 54 E13 30.29R TC 10
SAVANNA* PTCLDY 54 36 50 E12 30.29R TC 12
ILZ003-004-008-010-011-017-018-210500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 50 33 52 VRB3 30.31R TC 10
FREEPORT* PTCLDY 51 38 60 E12G17 30.31R TC 11
DE KALB* PTCLDY 44 33 64 NE7 30.29R TC 7
PERU* CLEAR 52 36 54 NE10 30.27S TC 11
ILZ005-006-012>014-019>023-210500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 48 35 60 N10 30.27S TC 9
CHICAGO-MIDWAY PTCLDY 50 34 54 NE10 30.26F TC 10
AURORA CLEAR 45 35 68 NE6 30.27S TC 7
JOLIET* CLEAR 50 34 53 NE8 30.26F TC 10
WAUKEGAN PTCLDY 47 36 65 NE10 30.26F TC 8
DUPAGE AIRPORT CLEAR 46 34 62 NE7 30.26F TC 8
KANKAKEE* CLEAR 49 34 56 NE13G18 30.26S TC 10
WHEELING CLEAR 47 36 65 NE7 30.28F TC 8
MORRIS* CLEAR 48 34 57 N3 30.26R TC 9
LANSING* CLEAR 48 34 58 NE6 30.26F TC 9
NORTHERLY ISL* N/A 48 37 65 N10 N/A TC 9
LMZ740>746-210500-
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 1022.6 3/ 4
WAUKEGAN HARBOR 49 50 340/ 14/ 17 1023.6 2/ 5
WILMETTE BUOY 50 60/ 17/ 25 1025.5F 3/ 5
CHICAGO BUOY 51 54 20/ 14/ 17 1023.2 3/ 4
HARRISON CRIB 50 20/ 16/ 17 N/A
NORTHERLY ISL 49 20/ 10/ 14 N/A
CALUMET HARBOR 50 350/ 9/ 12 1025.2
BURNS HARBOR 51 40/ 9/ 10 1025.1S
MICHIGAN CITY 51 30/ 17/ 18 1023.6F
ST. JOSEPH BUOY 53 30/ 14/ 17 1025.0F 4/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-210500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 58 52 80 NE3 30.19R TC 14
GALESBURG* CLEAR 56 41 57 E13G20 30.25R TC 13
MACOMB* CLEAR 56 49 74 CALM 30.25R TC 14
JACKSONVILLE* PTCLDY 57 46 66 E12 30.21R TC 14
ILZ028>032-037-038-041>044-048-051>054-059>061-210500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 50 37 61 MISG 30.25S TC 10
BLOOMINGTON CLEAR 51 39 63 NE12 30.25S TC 11
DECATUR PTCLDY 52 41 66 NE17 30.21R TC 11
PEORIA MOCLDY 55 39 54 E13 30.24R TC 13
LACON* CLEAR 52 37 56 NE8 30.26R TC 11
LINCOLN* CLEAR 55 41 58 NE10 30.23R TC 13
SPRINGFIELD LGT RAIN 57 41 55 NE15 30.21R TC 14
TAYLORVILLE PTCLDY 57 43 58 NE10G17 30.21R TC 14
ILZ033-039-045-046-055>057-062-063-210500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 52 40 63 NE10 30.22S TC 11
DANVILLE* MOCLDY 53 39 59 N14 30.23S TC 12
RANTOUL* PTCLDY 51 37 56 NE15G22 30.23F TC 11
MATTOON MOCLDY 57 46 66 N12 30.19R TC 14
PARIS* MOCLDY 57 45 64 N9 30.20S TC 14
ILZ079-100>102-210500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 63 55 75 NE5 30.18R TC 17
BELLEVILLE CLOUDY 64 59 83 CALM 30.14S TC 18
CAHOKIA* CLOUDY 64 56 75 N5 30.16R TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 64 61 88 CALM 30.12F TC 18
EFFINGHAM* MOCLDY 59 59 99 CALM 30.19S TC 15
MT. VERNON CLOUDY 60 57 89 NE3 30.16S TC 16
CENTRALIA* CLOUDY 63 55 76 CALM 30.16S TC 17
SALEM* CLOUDY 63 57 80 MISG 30.16F TC 17
ILZ067-068-072-073-078-083-087-091-210500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 61 55 81 NE9 30.15S TC 16
FLORA* MOCLDY 61 55 82 NE5 30.17S TC 16
FAIRFIELD* MOCLDY 62 55 79 NE7 30.16R TC 17
HARRISBURG* CLOUDY 62 56 82 NE6 30.14S TC 17
ROBINSON* CLOUDY 61 55 82 NE7 30.16S TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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