Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 202210
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT SUN SEP 20 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.
ILZ001-002-007-009-015-016-024-202300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 65 62 90 NE14G23 29.99R TC 18
STERLING* CLOUDY 65 62 90 NE14 30.01R TC 18
SAVANNA* CLOUDY 64 60 88 NE15G22 30.03S TC 18
$$
ILZ003-004-008-010-011-017-018-202300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD LGT RAIN 62 59 90 N9G18 30.05R TC 17
FREEPORT* CLOUDY 60 59 95 NE15G21 30.07R TC 16
ROCHELLE* CLOUDY 63 63 97 NE17G23 30.02R TC 17
DE KALB* CLOUDY 63 63 100 NE21G28 30.03R TC 17
PERU* CLOUDY 66 64 94 NE13G24 29.98R TC 19
$$
ILZ005-006-012>014-019>023-202300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE DRIZZLE 63 61 93 NE20G26 30.01R TC 17
CHICAGO-MIDWAY DRIZZLE 64 62 93 NE15G21 29.99R FOG TC 18
AURORA CLOUDY 64 62 93 NE15G26 30.00R FOG TC 18
JOLIET* CLOUDY 67 66 94 NE16 29.98R TC 20
WAUKEGAN CLOUDY 63 62 97 NE9G20 30.04R TC 17
DUPAGE AIRPORT LGT RAIN 63 60 90 NE18G31 30.01R TC 17
KANKAKEE* CLOUDY 67 66 95 NE8 29.96R FOG TC 20
WHEELING CLOUDY 63 61 93 NE14G22 30.03R TC 17
LANSING* LGT RAIN 64 64 97 NE13 29.98R TC 18
NORTHERLY ISL* N/A 63 61 93 NE20 N/A TC 17
$$
LMZ740>746-202300-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 64 64 40/ 16/ 21 1013.7 4/ 6
WAUKEGAN HARBOR 64 64 360/ 16/ 23 1017.2 4/ 6
WILMETTE BUOY 62 90/ 19/ 25 1018.0R 6/ 6
CHICAGO BUOY 64 66 1014.7 5/ 5
NORTHERLY ISL 63 30/ 16/ 17 N/A
CALUMET HARBOR 64 10/ 13/ 22 1015.3
MICH CITY BUOY 62 63 30/ 19/ 25 N/A 3/ 4
ST. JOSEPH BUOY 60 60 30/ 14/ 19 1016.9R 3/ 5
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-202300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 76 69 79 NE14 29.90S TC 24
GALESBURG* CLOUDY 66 66 100 NE16G22 29.97S TC 19
MACOMB* CLOUDY 74 71 92 NE12 29.96R TC 23
JACKSONVILLE* PTSUNNY 78 70 74 N10 29.89S HX 81 TC 26
PITTSFIELD* CLOUDY 82 70 65 N7 29.89F HX 86 TC 28
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-202300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 68 68 100 NE10 29.96R TC 20
BLOOMINGTON LGT RAIN 70 70 100 N16 29.94S TC 21
DECATUR PTSUNNY 81 68 64 N10 29.89S HX 84 TC 27
PEORIA CLOUDY 69 67 93 NE8 29.94S FOG TC 21
LACON* CLOUDY 67 64 89 NE3 29.96R TC 20
LINCOLN* CLOUDY 77 68 73 N7 29.91S TC 25
SPRINGFIELD PTSUNNY 80 69 69 N12 29.89S HX 83 TC 27
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-202300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 79 69 71 N12G20 29.90S HX 81 TC 26
RANTOUL* CLOUDY 73 71 93 N7 29.93R TC 23
MATTOON PTSUNNY 86 65 49 NE8 29.87S HX 88 TC 30
PARIS* MOSUNNY 84 66 53 N6 29.88F HX 86 TC 29
$$
ILZ079-100>102-202300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTSUNNY 90 64 43 W3 29.86S HX 91 TC 32
BELLEVILLE MOSUNNY 93 69 46 NW5 29.82F HX 98 TC 34
CAHOKIA* MOSUNNY 92 65 40 VRB3 29.83F HX 94 TC 33
SPARTA* MOSUNNY 93 62 34 CALM 29.84F HX 93 TC 34
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-202300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 95 61 31 W9 29.83F HX 95 TC 35
CAIRO* MOSUNNY 95 64 35 SW3 29.84S HX 97 TC 35
EFFINGHAM* MOSUNNY 89 62 40 CALM 29.88S HX 89 TC 32
MT. VERNON MOSUNNY 93 65 39 SW5 29.84F HX 95 TC 34
SALEM* MOSUNNY 93 67 43 MISG 29.85S HX 96 TC 34
METROPOLIS* MOSUNNY 94 62 34 CALM 29.85F HX 94 TC 34
$$
ILZ067-068-072-073-078-083-087-091-202300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 89 69 51 N7 29.85S HX 93 TC 32
FLORA* MOSUNNY 91 68 46 N6 29.85F HX 95 TC 33
FAIRFIELD* MOSUNNY 92 64 38 SW3 29.84S HX 93 TC 34
HARRISBURG* MOSUNNY 94 62 34 SW9G17 29.84F HX 94 TC 34
ROBINSON* PTSUNNY 90 70 51 N5 29.85S HX 95 TC 32
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$