Regional Weather Roundup
Issued by NWS
Issued by NWS
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099
ASUS43 KLOT 200101
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 PM CDT SAT SEP 19 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.
ILZ001-002-007-009-015-016-024-200200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 71 70 96 N6 29.88R TC 22
STERLING* CLOUDY 69 69 100 E6 29.89F TC 21
SAVANNA* LGT RAIN 68 68 100 E6 29.89S TC 20
$$
ILZ003-004-008-010-011-017-018-200200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD HVY RAIN 67 66 97 NE3 29.95S FOG TC 19
FREEPORT* CLOUDY 67 65 94 E7 29.94F TC 20
DE KALB* HVY RAIN 67 67 100 SE6 29.96S TC 20
$$
ILZ005-006-012>014-019>023-200200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 69 67 93 CALM 29.93S TC 21
CHICAGO-MIDWAY CLOUDY 71 69 93 CALM 29.94S TC 22
AURORA CLOUDY 68 68 100 E3 29.94S FOG TC 20
JOLIET* HVY RAIN 71 71 100 CALM 29.95R TC 22
WAUKEGAN CLOUDY 65 65 100 E3 29.94F FOG TC 18
DUPAGE AIRPORT RAIN 68 68 100 CALM 29.95R FOG TC 20
KANKAKEE* LGT RAIN 71 69 95 CALM 29.94F TC 22
WHEELING CLOUDY 66 65 96 CALM 29.96S FOG TC 19
LANSING* RAIN 69 68 98 CALM 29.95S TC 20
NORTHERLY ISL* N/A 67 65 93 E2 N/A TC 19
$$
LMZ740>746-200200-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 65 65 360/ 2/ 4 1014.9S 2/ 4
WAUKEGAN HARBOR 65 66 40/ 4/ 6 1014.4F 1/ 4
WILMETTE BUOY 63 70/ 2/ 4 1015.8F 1/ 4
CHICAGO BUOY 68 67 1013.0F 1
NORTHERLY ISL 67 100/ 2/ 5 N/A
CALUMET HARBOR 68 100/ 2/ 2 1013.9F
MICH CITY BUOY 64 65 50/ 8/ 10 N/A 1
ST. JOSEPH BUOY 62 61 40/ 2/ 4 1015.5R 1
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-200200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 79 71 76 SE7 29.85F HX 82 TC 26
GALESBURG* CLOUDY 75 72 92 NE14 29.90R TC 24
MACOMB* MOCLDY 76 75 98 S6 29.87F TC 25
JACKSONVILLE* PTCLDY 78 71 78 E5 29.86F HX 81 TC 26
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-200200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 72 72 100 E5 29.93R TC 22
BLOOMINGTON CLOUDY 75 75 100 E9 29.93R TC 24
DECATUR CLOUDY 78 73 84 E3 29.90S HX 81 TC 26
PEORIA CLOUDY 76 73 91 E7 29.88S TC 24
SPRINGFIELD CLOUDY 79 73 82 SE5 29.87F HX 82 TC 26
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-200200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 77 73 87 E10 29.92R TC 25
MATTOON CLOUDY 80 70 71 NE5 29.90S HX 83 TC 27
$$
ILZ079-100>102-200200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BELLEVILLE CLEAR 81 77 88 CALM 29.85S HX 89 TC 27
CAHOKIA* CLEAR 80 72 76 S3 29.86S HX 84 TC 27
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-200200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 81 65 58 S3 29.91R HX 82 TC 27
EFFINGHAM* CLOUDY 78 76 92 CALM 29.92R HX 82 TC 26
MARION CLEAR 84 64 51 S2 29.90R HX 86 TC 29
MT. VERNON PTCLDY 83 68 60 CALM 29.90R HX 86 TC 28
CENTRALIA* MOCLDY 81 70 69 CALM 29.89S HX 84 TC 27
SALEM* MOCLDY 81 68 65 MISG 29.90R HX 83 TC 27
$$
ILZ067-068-072-073-078-083-087-091-200200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 82 74 76 E6 29.89F HX 88 TC 28
FLORA* MOCLDY 81 73 78 CALM 29.90S HX 85 TC 27
FAIRFIELD* PTCLDY 80 71 73 CALM 29.90R HX 84 TC 27
HARRISBURG* CLEAR 81 66 61 CALM 29.90S HX 83 TC 27
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$