Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 182012
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 PM CDT FRI SEP 18 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.
ILZ001-002-007-009-015-016-024-182100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 73 67 81 SE15G22 30.12F TC 23
STERLING* PTSUNNY 67 64 90 E8 30.14F TC 19
SAVANNA* PTSUNNY 68 64 88 SE12 30.13F TC 20
$$
ILZ003-004-008-010-011-017-018-182100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 67 56 67 E7 30.16F TC 19
FREEPORT* CLOUDY 67 64 91 SE12 30.16F TC 19
ROCHELLE* PTSUNNY 67 60 78 SE10 30.14F TC 20
DE KALB* DRIZZLE 68 58 68 SE16 30.18F TC 20
PERU* CLOUDY 72 64 78 E6 30.15F TC 22
$$
ILZ005-006-012>014-019>023-182100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 69 57 65 E14 30.18F TC 21
CHICAGO-MIDWAY CLOUDY 70 57 63 E14 30.18F TC 21
AURORA CLOUDY 70 59 68 E13 30.17F TC 21
JOLIET* PTSUNNY 74 65 73 E9 30.18F TC 23
WAUKEGAN PTSUNNY 67 59 75 E10 30.19F TC 19
DUPAGE AIRPORT CLOUDY 69 57 65 E12 30.18F TC 21
KANKAKEE* CLOUDY 73 65 75 E6 30.21F TC 23
WHEELING CLOUDY 68 58 70 E12G20 30.20F TC 20
LANSING* CLOUDY 70 56 62 NE8 30.22F TC 21
NORTHERLY ISL* N/A 68 58 70 E12 N/A TC 20
$$
LMZ740>746-182100-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 67 65 70/ 14/ 17 1022.2 3/ 5
WAUKEGAN HARBOR 67 66 60/ 12/ 16 1021.3 3/ 5
WILMETTE BUOY 66 130/ 10/ 14 1024.6F 3/ 4
CHICAGO BUOY 69 67 1020.7 3/ 5
NORTHERLY ISL 68 60/ 10/ 12 N/A
CALUMET HARBOR 69 40/ 8/ 10 1023.5
MICH CITY BUOY 67 66 40/ 8/ 12 N/A 2/ 4
ST. JOSEPH BUOY 66 63 10/ 8/ 10 1023.7F 1/ 5
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-182100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY SUNNY 86 74 67 VRB5 30.09F HX 94 TC 30
GALESBURG* CLOUDY 69 66 90 E9G16 30.15F TC 21
MACOMB* CLOUDY 76 71 83 E10 30.15F TC 25
JACKSONVILLE* SUNNY 88 75 63 NE8 30.09F HX 98 TC 31
PITTSFIELD* SUNNY 92 73 52 E6 30.09F HX 100 TC 34
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-182100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC LGT RAIN 71 69 92 NE10G17 30.18F TC 22
BLOOMINGTON CLOUDY 72 72 100 NE14 30.18F TC 22
DECATUR MOSUNNY 85 74 69 NE14 30.12F HX 92 TC 29
PEORIA CLOUDY 70 68 93 E10 30.14F TC 21
LACON* LGT RAIN 68 65 90 SE7 30.14F TC 20
LINCOLN* CLOUDY 77 76 95 NE12 30.14F TC 25
SPRINGFIELD SUNNY 88 74 63 E8 30.10F HX 96 TC 31
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-182100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 72 69 90 NE9 30.15F TC 22
RANTOUL* LGT RAIN 72 72 99 NE8 30.17S TC 22
MATTOON MOSUNNY 85 71 63 NE21G39 30.10F HX 90 TC 29
PARIS* TSTM 70 69 97 NE7 30.14F TC 21
$$
ILZ079-100>102-182100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOSUNNY 97 68 38 S6 30.07F HX 101 TC 36
BELLEVILLE SUNNY 98 73 43 VRB6 30.04F HX 108 TC 37
CAHOKIA* SUNNY 97 72 44 CALM 30.05F HX 105 TC 36
SPARTA* MOSUNNY 93 69 46 S10G17 30.08F HX 98 TC 34
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE MOSUNNY 97 68 38 SW9 30.07F HX 101 TC 36
CAIRO* SUNNY 99 68 35 CALM 30.08F HX 104 TC 37
EFFINGHAM* MOSUNNY 95 68 41 CALM 30.08F HX 99 TC 35
MT. VERNON MOSUNNY 98 69 38 VRB7 30.06F HX 104 TC 37
SALEM* SUNNY 97 71 42 MISG 30.07F HX 105 TC 36
METROPOLIS* SUNNY 98 66 35 CALM 30.08F HX 101 TC 36
$$
ILZ067-068-072-073-078-083-087-091-182100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 94 72 48 S13 30.07F HX 102 TC 34
FLORA* SUNNY 97 72 44 W3 30.06F HX 105 TC 36
FAIRFIELD* PTSUNNY 96 65 36 CALM 30.06F HX 99 TC 36
HARRISBURG* MOSUNNY 98 70 39 W8 30.07F HX 105 TC 37
ROBINSON* LGT RAIN 95 75 52 NE9 30.07F HX 107 TC 35
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$