Regional Weather Roundup
Issued by NWS
Issued by NWS
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015
ASUS43 KLOT 151906
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 PM CDT TUE SEP 15 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.
ILZ001-002-007-009-015-016-024-152000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 81 69 67 W3 30.06S HX 84 TC 27
STERLING* PTSUNNY 81 72 74 W9 30.08R HX 85 TC 27
SAVANNA* CLOUDY 78 69 73 NW7 30.08R HX 80 TC 26
$$
ILZ003-004-008-010-011-017-018-152000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 78 69 73 W6 30.07F HX 80 TC 26
FREEPORT* CLOUDY 77 72 86 W8 30.10R TC 25
ROCHELLE* MOSUNNY 82 71 68 W12 30.07S HX 86 TC 28
DE KALB* MOSUNNY 81 71 71 W8 30.08S HX 85 TC 27
PERU* MOSUNNY 82 70 65 W3 30.07S HX 86 TC 28
$$
ILZ005-006-012>014-019>023-152000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 81 68 64 SW8 30.05F HX 84 TC 27
CHICAGO-MIDWAY PTSUNNY 79 70 74 SW6 30.06S HX 82 TC 26
AURORA MOSUNNY 81 69 67 SW9 30.07S HX 84 TC 27
JOLIET* MOSUNNY 85 70 59 SW6 30.06S HX 90 TC 30
WAUKEGAN MOSUNNY 77 70 79 W9 30.04F TC 25
DUPAGE AIRPORT MOSUNNY 82 70 66 SW13 30.06F HX 86 TC 28
KANKAKEE* MOSUNNY 91 69 48 SW8 30.06F HX 95 TC 33
WHEELING MOSUNNY 79 70 74 SW7 30.06F HX 82 TC 26
LANSING* MOSUNNY 84 66 54 SW9 30.05F HX 86 TC 29
NORTHERLY ISL* N/A 74 64 71 NE6 N/A TC 23
$$
LMZ740>746-152000-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 67 54 220/ 6/ 8 1020.2R 1/ 4
WAUKEGAN HARBOR 70 55 260/ 4/ 8 1017.7S 1/ 3
WILMETTE BUOY 65 100/ 4/ 6 1020.4R 1
CHICAGO BUOY 69 67 1016.5F 1
NORTHERLY ISL 80 240/ 9/ 14 N/A
CALUMET HARBOR 81 200/ 6/ 10 1017.8R
MICH CITY BUOY 71 65 240/ 4/ 6 N/A 1
ST. JOSEPH BUOY 71 68 300/ 4/ 4 1019.1R 1/ 4
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-152000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 90 70 51 W8 30.04R HX 95 TC 32
GALESBURG* N/A 85 73 65 NW9 30.07 HX 92 TC 30
MACOMB* PTSUNNY 90 75 61 W9G17 30.07S HX 99 TC 32
JACKSONVILLE* PTSUNNY 96 70 41 W9G16 30.03F HX 103 TC 36
PITTSFIELD* MOSUNNY 95 69 42 W7 30.05S HX 100 TC 35
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-152000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOSUNNY 92 71 48 W13G18 30.05S HX 99 TC 34
BLOOMINGTON SUNNY 94 71 47 W9 30.07F HX 101 TC 34
DECATUR SUNNY 97 69 40 SW13G21 30.06F HX 103 TC 36
PEORIA PTSUNNY 87 71 58 SW7 30.06R HX 93 TC 31
LACON* MOSUNNY 88 70 55 SW6 30.04F HX 92 TC 31
LINCOLN* MOSUNNY 96 72 45 SW6 30.04F HX 104 TC 36
SPRINGFIELD MOSUNNY 98 67 36 SW10G20 30.04F HX 102 TC 37
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-152000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 94 68 42 SW10G17 30.07F HX 98 TC 34
RANTOUL* SUNNY 96 68 40 SW12G18 30.07F HX 100 TC 35
MATTOON MOSUNNY 96 69 41 S12G23 30.07F HX 102 TC 36
PARIS* PTSUNNY 96 67 38 W12 30.09S HX 100 TC 36
$$
ILZ079-100>102-152000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOSUNNY 97 72 44 SW13 30.06F HX 105 TC 36
CAHOKIA* MOSUNNY 98 71 41 SW6 30.05F HX 106 TC 37
SPARTA* SUNNY 97 69 40 S5G17 30.09F HX 102 TC 36
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-152000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 95 72 46 SW7G22 30.10S HX 103 TC 35
CAIRO* SUNNY 97 72 45 S6 30.11F HX 106 TC 36
EFFINGHAM* MOSUNNY 97 65 35 S10 30.09F HX 99 TC 36
MARION SUNNY 93 72 49 S10G22 30.11F HX 100 TC 34
MT. VERNON MOSUNNY 97 73 45 S10 30.10F HX 107 TC 36
SALEM* MOSUNNY 99 71 39 MISG 30.09F HX 107 TC 37
METROPOLIS* SUNNY 96 69 41 S7 30.12F HX 101 TC 35
$$
ILZ067-068-072-073-078-083-087-091-152000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 96 69 41 SW10 30.10F HX 102 TC 36
FLORA* SUNNY 97 72 44 S14 30.09F HX 105 TC 36
FAIRFIELD* MOSUNNY 96 68 39 SW10G16 30.09F HX 101 TC 36
HARRISBURG* SUNNY 96 70 42 SW13 30.11F HX 102 TC 36
ROBINSON* MOSUNNY 97 72 44 SW10 30.09S HX 105 TC 36
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$