415
ASUS43 KLOT 210201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 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.
ILZ001-002-007-009-015-016-024-210300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 61 44 53 NE9 30.17F TC 16
STERLING* PTCLDY 57 36 45 E21 30.22R TC 14
SAVANNA* CLEAR 58 41 53 E6 30.21S TC 15
ILZ003-004-008-010-011-017-018-210300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 52 35 52 E9 30.28R TC 11
FREEPORT* CLEAR 54 40 60 E12 30.27R TC 12
ROCHELLE* PTCLDY 52 32 46 E14 30.26R TC 11
DE KALB* CLEAR 49 34 58 NE12 30.28R TC 9
PERU* CLEAR 55 37 50 NE13 30.24R TC 13
ILZ005-006-012>014-019>023-210300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 50 32 50 N13 30.27S TC 10
CHICAGO-MIDWAY PTCLDY 51 31 46 NE15G23 30.27S TC 11
AURORA CLEAR 50 35 56 NE13 30.26R TC 10
JOLIET* PTCLDY 53 37 53 NE10 30.27R TC 12
WAUKEGAN CLEAR 46 35 65 NE5 30.28R TC 8
DUPAGE AIRPORT CLEAR 49 33 54 NE9 30.27R TC 9
KANKAKEE* MOCLDY 52 37 55 N14 30.26R TC 11
WHEELING PTCLDY 48 35 60 NE7 30.29S TC 9
MORRIS* PTCLDY 54 36 50 NE7 30.25R TC 12
LANSING* PTCLDY 49 34 56 NE14 30.27S TC 10
NORTHERLY ISL* N/A 49 34 56 MISG N/A TC 9
LMZ740>746-210300-
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 1022.9R 2/ 4
WAUKEGAN HARBOR 49 51 330/ 12/ 16 1023.9S 2/ 5
WILMETTE BUOY 50 50/ 16/ 19 1025.6F 3/ 4
CHICAGO BUOY 51 54 30/ 19/ 23 1023.4S 3/ 4
HARRISON CRIB 51 10/ 19/ 20 N/A
NORTHERLY ISL 49 360/ 12/ 15 N/A
CALUMET HARBOR 50 350/ 10/ 14 1025.1R
BURNS HARBOR 50 20/ 10/ 11 1025.1R
MICHIGAN CITY 49 20/ 18/ 19 1024.0R
ST. JOSEPH BUOY 50 10/ 14/ 17 1024.9R 4/ 6
ILZ025>027-034>036-040-047-049-050-058-095>099-210300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 62 49 62 NE3 30.16R TC 17
GALESBURG* CLEAR 56 47 70 N3 30.19R TC 14
MACOMB* CLEAR 59 52 77 CALM 30.19R TC 15
JACKSONVILLE* PTCLDY 62 51 69 N5 30.15R TC 16
PITTSFIELD* PTCLDY 61 52 71 N3 30.17R TC 16
ILZ028>032-037-038-041>044-048-051>054-059>061-210300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 55 39 55 MISG 30.24R TC 13
BLOOMINGTON MOCLDY 56 40 55 NE15 30.22R TC 13
DECATUR MOCLDY 59 45 59 NE16 30.17S TC 15
PEORIA PTCLDY 61 43 51 E15G24 30.19R TC 16
LACON* PTCLDY 56 39 51 E14G21 30.21R TC 14
LINCOLN* MOCLDY 61 44 53 NE15G22 30.19R TC 16
SPRINGFIELD LGT RAIN 62 44 51 NE16 30.16R TC 17
TAYLORVILLE MOCLDY 63 48 59 NE14G20 30.16R TC 17
ILZ033-039-045-046-055>057-062-063-210300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 58 42 55 N21G30 30.19R TC 14
DANVILLE* MOCLDY 58 43 58 N14G22 30.20R TC 14
RANTOUL* MOCLDY 55 38 51 NE17 30.20S TC 13
MATTOON MOCLDY 62 53 72 NE5 30.15R TC 17
PARIS* MOCLDY 61 49 66 NE6 30.17R TC 16
ILZ079-100>102-210300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 64 55 72 VRB5 30.15R TC 18
CAHOKIA* CLOUDY 65 56 72 NE5 30.14R TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 64 61 88 CALM 30.12R TC 18
CAIRO* CLOUDY 65 60 85 NE7 30.11S TC 18
EFFINGHAM* MOCLDY 61 59 91 CALM 30.17R TC 16
MARION CLOUDY 63 61 93 NE3 30.12S TC 17
MT. VERNON MOCLDY 63 58 83 N5 30.14R TC 17
CENTRALIA* CLOUDY 65 57 75 CALM 30.14R TC 18
SALEM* CLOUDY 65 58 79 MISG 30.15R TC 18
METROPOLIS* CLOUDY 63 63 100 N7 30.10S TC 17
ILZ067-068-072-073-078-083-087-091-210300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 61 54 77 NE9 30.13S TC 16
FLORA* CLOUDY 63 55 77 NE6 30.15R TC 17
FAIRFIELD* CLOUDY 64 58 81 NE7 30.13R TC 18
HARRISBURG* CLOUDY 64 61 90 NE5 30.12S TC 18
ROBINSON* MOCLDY 61 55 82 NE8 30.14R TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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