Regional Weather Roundup
Issued by NWS
Issued by NWS
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899
ASUS43 KLOT 220008
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 PM CDT MON SEP 21 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.
ILZ001-002-007-009-015-016-024-220100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 63 56 78 NE14G24 30.11S TC 17
6HR MIN TEMP: 62; 6HR MAX TEMP: 64; 6HR PCP: 0.02;
STERLING* CLOUDY 62 54 74 NE13G21 30.15R TC 17
SAVANNA* CLOUDY 58 54 84 NE15 30.16S TC 15
$$
ILZ003-004-008-010-011-017-018-220100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 59 51 75 N10 30.20R TC 15
6HR MIN TEMP: 59; 6HR MAX TEMP: 64;
FREEPORT* CLOUDY 56 55 95 E8 30.20F TC 14
ROCHELLE* CLOUDY 60 52 75 NE16 30.17R TC 16
DE KALB* CLOUDY 59 52 78 NE14 30.18R TC 15
$$
ILZ005-006-012>014-019>023-220100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 62 53 72 NE16G24 30.14S TC 17
6HR MIN TEMP: 62; 6HR MAX TEMP: 66;
CHICAGO-MIDWAY CLOUDY 63 54 72 NE15 30.14R TC 17
6HR MIN TEMP: 63; 6HR MAX TEMP: 65;
AURORA CLOUDY 62 53 72 NE14G22 30.15R TC 17
6HR MIN TEMP: 61; 6HR MAX TEMP: 68;
JOLIET* CLOUDY 64 56 75 NE10 30.14R TC 18
WAUKEGAN CLOUDY 61 53 75 NE8 30.17R TC 16
6HR MIN TEMP: 60; 6HR MAX TEMP: 64;
DUPAGE AIRPORT CLOUDY 61 53 75 NE13G21 30.16R TC 16
6HR MIN TEMP: 61; 6HR MAX TEMP: 66;
KANKAKEE* CLOUDY 64 56 75 NE9 30.12R TC 18
WHEELING CLOUDY 62 54 74 NE10 30.17R TC 17
6HR MIN TEMP: 62; 6HR MAX TEMP: 65;
LANSING* CLOUDY 62 54 74 NE10 30.13S TC 17
NORTHERLY ISL* N/A 63 54 72 NE15 N/A TC 17
$$
LMZ740>746-220100-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 63 64 40/ 16/ 19 1018.9R 4/ 6
WAUKEGAN HARBOR 63 64 360/ 16/ 21 1020.9R 4/ 5
WILMETTE BUOY 63 90/ 16/ 19 1022.6S 4/ 5
CHICAGO BUOY 65 65 1019.5R 4/ 5
HARRISON CRIB 64 50/ 19/ 21 N/A
NORTHERLY ISL 63 50/ 14/ 17 N/A
CALUMET HARBOR 63 30/ 12/ 16 1020.3
MICHIGAN CITY 56 50/ 8/ 8 1019.8R
MICH CITY BUOY 59 56 40/ 10/ 12 N/A 4/ 7
ST. JOSEPH BUOY 58 53 60/ 6/ 8 1021.6R 3/ 6
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-220100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 63 60 90 NE12 30.06S TC 17
GALESBURG* CLOUDY 62 62 98 NE3 30.12R TC 17
MACOMB* CLOUDY 61 61 100 E3 30.11S TC 16
JACKSONVILLE* CLOUDY 63 63 100 N7 30.07S TC 17
PITTSFIELD* CLOUDY 64 63 94 NE6 30.08S TC 18
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-220100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 65 58 80 NE12 30.11S TC 18
BLOOMINGTON CLOUDY 62 61 96 NE10 30.10S TC 17
DECATUR CLOUDY 65 60 84 NE9 30.06S TC 18
PEORIA CLOUDY 63 60 90 CALM 30.09S TC 17
6HR MIN TEMP: 62; 6HR MAX TEMP: 64; 6HR PCP: TRACE;
LACON* CLOUDY 63 56 79 NE5 30.10R TC 17
LINCOLN* CLOUDY 65 60 84 NE7 30.07F TC 18
SPRINGFIELD CLOUDY 64 61 90 NE7 30.07R TC 18
6HR MIN TEMP: 64; 6HR MAX TEMP: 66;
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-220100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 65 58 78 NE6 30.07S TC 18
RANTOUL* CLOUDY 64 58 81 NE7 30.08S TC 18
MATTOON CLOUDY 66 59 78 NE14 30.05R TC 19
PARIS* CLOUDY 65 57 75 NE5 30.06S TC 18
$$
ILZ079-100>102-220100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 68 63 83 NE7 30.04R TC 20
BELLEVILLE CLOUDY 71 68 89 N7 30.00R TC 22
CAHOKIA* CLOUDY 70 64 81 NE7 30.02R TC 21
SPARTA* CLOUDY 70 68 93 N5 30.02R TC 21
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-220100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE PTCLDY 73 66 78 MISG 29.99R TC 23
CAIRO* CLEAR 82 69 65 N5 29.95R HX 85 TC 28
EFFINGHAM* CLOUDY 68 61 79 N5 30.05R TC 20
MT. VERNON CLOUDY 72 66 81 NE7 30.01R TC 22
CENTRALIA* CLOUDY 70 66 87 N6 30.02R TC 21
SALEM* CLOUDY 70 66 88 MISG 30.02R TC 21
METROPOLIS* PTCLDY 80 66 62 N5 29.95R HX 82 TC 27
$$
ILZ067-068-072-073-078-083-087-091-220100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 66 60 81 NE10 30.03R TC 19
FLORA* CLOUDY 68 64 88 NE7 30.03R FOG TC 20
FAIRFIELD* CLOUDY 70 64 80 N8 30.01R TC 21
HARRISBURG* CLOUDY 76 67 75 N7 29.99R TC 24
ROBINSON* CLOUDY 66 61 82 NE7 30.03S TC 19
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$