696
ASUS43 KLOT 201001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM 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.
ILZ001-002-007-009-015-016-024-201100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 48 42 80 NW8 30.23R TC 9
STERLING* PTCLDY 48 44 86 NW5 30.23R TC 9
SAVANNA* PTCLDY 46 42 86 N5 30.23R TC 8
ILZ003-004-008-010-011-017-018-201100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 44 42 93 CALM 30.22R TC 7
FREEPORT* PTCLDY 45 44 95 NW3 30.24R TC 7
ROCHELLE* PTCLDY 45 41 87 CALM 30.22R TC 7
DE KALB* PTCLDY 46 41 83 N8 30.21S TC 8
PERU* PTCLDY 52 46 82 N7 30.21R TC 11
ILZ005-006-012>014-019>023-201100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 53 42 66 N12 30.18R TC 12
CHICAGO-MIDWAY CLOUDY 55 42 61 N10 30.18R TC 13
AURORA PTCLDY 47 44 90 N5 30.19R TC 8
JOLIET* PTCLDY 55 45 68 N10 30.19S TC 13
WAUKEGAN PTCLDY 48 43 82 W3 30.19R TC 9
DUPAGE AIRPORT CLOUDY 50 43 77 N7 30.19R TC 10
KANKAKEE* CLOUDY 56 48 74 N9 30.17S TC 14
WHEELING PTCLDY 51 43 74 N5 30.20R TC 11
MORRIS* PTCLDY 52 45 76 CALM 30.18R TC 11
LANSING* CLOUDY 54 42 65 N8G18 30.19R TC 12
NORTHERLY ISL* N/A 54 41 61 N16 N/A TC 12
LMZ740>746-201100-
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 47 1020.0R 1/ 2
WAUKEGAN HARBOR 52 51 290/ 6/ 8 1021.3R 1
WILMETTE BUOY 54 10/ 12/ 16 1022.6R 2/ 3
CHICAGO BUOY 54 53 350/ 16/ 19 1020.9R 3/ 4
HARRISON CRIB 54 340/ 17/ 18 N/A
NORTHERLY ISL 54 330/ 11/ 18 N/A
CALUMET HARBOR 54 330/ 8/ 13 1022.0R
BURNS HARBOR 53 10/ 5/ 7 1022.4R
MICHIGAN CITY 52 350/ 16/ 18 1021.0R
ST. JOSEPH BUOY 50 330/ 10/ 14 1022.4R 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-201100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 50 45 83 N10 30.23R TC 10
GALESBURG* MOCLDY 46 42 86 NW5 30.25R TC 8
MACOMB* MOCLDY 49 46 90 CALM 30.25S TC 9
JACKSONVILLE* CLOUDY 53 46 76 N10 30.21R TC 12
PITTSFIELD* CLOUDY 53 47 79 N9 30.23S TC 12
ILZ028>032-037-038-041>044-048-051>054-059>061-201100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 52 47 83 MISG 30.19R TC 11
BLOOMINGTON CLOUDY 53 47 79 N13 30.20R TC 12
DECATUR CLOUDY 54 49 83 MISG 30.17S TC 12
PEORIA PTCLDY 50 45 83 N6 30.21R TC 10
LACON* PTCLDY 50 44 79 N6 30.21R TC 10
LINCOLN* CLOUDY 55 48 80 N6 30.20R TC 13
SPRINGFIELD CLOUDY 54 47 77 N8 30.20R TC 12
TAYLORVILLE MOCLDY 54 48 82 N10 30.20R TC 12
ILZ033-039-045-046-055>057-062-063-201100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 54 50 86 N10 30.15S TC 12
DANVILLE* MOCLDY 57 52 83 NW10 30.15S TC 14
MATTOON CLOUDY 56 51 84 N12 30.14R TC 13
PARIS* MOCLDY 57 52 82 N6 30.14S TC 14
ILZ079-100>102-201100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 56 49 77 N8 30.20R TC 14
BELLEVILLE CLOUDY 59 54 81 N13 30.16R TC 15
CAHOKIA* CLOUDY 59 52 77 N14 30.18R TC 15
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-201100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 69 67 93 NE7 30.11R TC 21
EFFINGHAM* CLOUDY 59 55 85 NW8G16 30.17R TC 15
MT. VERNON CLOUDY 61 58 90 N6 30.15R TC 16
CENTRALIA* CLOUDY 61 55 81 N7G17 30.15R TC 16
SALEM* CLOUDY 61 56 83 MISG 30.15R TC 16
METROPOLIS* CLOUDY 69 69 100 N6 30.11R TC 21
ILZ067-068-072-073-078-083-087-091-201100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE HVY RAIN 62 60 93 N16 30.11R FOG TC 17
FLORA* LGT RAIN 61 57 88 N10 30.15R TC 16
FAIRFIELD* CLOUDY 62 59 90 N9 30.13R TC 17
HARRISBURG* RAIN 66 64 95 N7 30.12R TC 19
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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