Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 221506
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 AM CDT TUE SEP 22 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-221600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE LGT RAIN 58 54 86 E10 30.27R TC 14
STERLING* CLOUDY 61 54 77 NE12 30.30R TC 16
SAVANNA* CLOUDY 57 55 94 NE6 30.31R TC 14
$$
ILZ003-004-008-010-011-017-018-221600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 58 54 86 NE6 30.32R TC 14
FREEPORT* CLOUDY 56 54 95 NE7 30.33R TC 13
ROCHELLE* LGT RAIN 58 51 77 E10 30.30R TC 15
DE KALB* CLOUDY 57 50 78 E14 30.30R TC 14
$$
ILZ005-006-012>014-019>023-221600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 59 46 62 E16 30.28S TC 15
CHICAGO-MIDWAY PTSUNNY 59 47 64 NE16 30.28S TC 15
AURORA CLOUDY 59 49 69 E15G22 30.29R TC 15
JOLIET* CLOUDY 61 49 63 NE7 30.28S TC 16
WAUKEGAN PTSUNNY 58 48 69 E12G21 30.31R TC 14
DUPAGE AIRPORT CLOUDY 59 49 69 NE15G24 30.29R TC 15
KANKAKEE* MOSUNNY 62 47 59 NE8 30.27S TC 17
WHEELING MOSUNNY 59 48 67 E10G22 30.31S TC 15
LANSING* MOSUNNY 57 47 70 NE10 30.28S TC 14
NORTHERLY ISL* N/A 59 49 69 NE16 N/A TC 15
$$
LMZ740>746-221600-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 60 64 40/ 16/ 21 1024.5R 4/ 5
WAUKEGAN HARBOR 60 64 30/ 16/ 21 1024.9R 4/ 5
WILMETTE BUOY 59 100/ 16/ 21 1027.5R 4/ 6
CHICAGO BUOY 59 65 1024.2R 4/ 4
HARRISON CRIB 57 60/ 19/ 21 N/A
NORTHERLY ISL 59 60/ 16/ 16 N/A
CALUMET HARBOR 58 30/ 9/ 14 1025.4S
MICHIGAN CITY 53 20/ 10/ 11 1024.9R
MICH CITY BUOY 52 51 40/ 10/ 14 N/A 3/ 6
ST. JOSEPH BUOY 53 51 40/ 8/ 12 1026.0R 2/ 5
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-221600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 62 58 86 E7 30.21R TC 17
GALESBURG* RAIN 56 56 100 N6 30.28R TC 13
MACOMB* CLOUDY 57 57 100 NE10 30.27R TC 14
JACKSONVILLE* CLOUDY 62 60 93 E12 30.21S TC 17
PITTSFIELD* CLOUDY 64 58 81 E5 30.21S TC 18
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-221600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 62 50 64 NE9 30.26S TC 17
BLOOMINGTON CLOUDY 61 52 72 NE13 30.26R TC 16
DECATUR CLOUDY 62 55 77 NE12 30.22S TC 17
PEORIA CLOUDY 60 52 74 E9 30.25R TC 16
LACON* CLOUDY 59 48 67 E10 30.26R TC 15
LINCOLN* CLOUDY 62 55 80 NE9 30.24R TC 17
SPRINGFIELD CLOUDY 62 56 80 NE9 30.22R TC 17
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-221600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 63 54 72 NE12 30.22S TC 17
RANTOUL* MOSUNNY 61 52 72 NE10 30.23F TC 16
MATTOON CLOUDY 64 55 72 NE13 30.19S TC 18
PARIS* CLOUDY 63 53 71 NE7 30.22R TC 17
$$
ILZ079-100>102-221600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 63 55 77 E7 30.19R TC 17
CAHOKIA* CLOUDY 65 57 75 NE10 30.17R TC 18
SPARTA* CLOUDY 62 57 84 NE8 30.18R TC 17
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-221600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 64 57 77 NE12 30.14R TC 18
CAIRO* CLOUDY 66 64 93 N6 30.14R TC 19
EFFINGHAM* CLOUDY 62 55 77 NE6 30.21R TC 17
MT. VERNON CLOUDY 61 55 81 N7G16 30.17R TC 16
CENTRALIA* CLOUDY 63 56 78 E10 30.18R TC 17
SALEM* CLOUDY 64 57 78 MISG 30.18R TC 18
METROPOLIS* CLOUDY 66 60 82 NE5 30.14R TC 19
$$
ILZ067-068-072-073-078-083-087-091-221600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 62 55 77 NE10 30.17R TC 17
FLORA* HAZE 63 55 77 NE10 30.19R VSB 1/2 TC 17
FAIRFIELD* HAZE 62 55 77 NE10 30.17R VSB 1 TC 16
HARRISBURG* CLOUDY 61 61 99 NE8 30.16R FOG TC 16
ROBINSON* CLOUDY 63 55 77 E12 30.18R TC 17
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$