Regional Weather Roundup
Issued by NWS
Issued by NWS
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063
ASUS43 KLOT 210610
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 AM 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.
ILZ001-002-007-009-015-016-024-210700-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 60 58 92 NE9 30.06F TC 16
6HR MIN TEMP: 60; 6HR MAX TEMP: 63;
STERLING* CLOUDY 61 60 97 NE10 30.09S TC 16
SAVANNA* CLOUDY 60 55 85 NE10 30.10F TC 16
$$
ILZ003-004-008-010-011-017-018-210700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD DRIZZLE 61 59 93 VRB7 30.12F TC 16
6HR MIN TEMP: 60; 6HR MAX TEMP: 61; 6HR PCP: 0.01;
FREEPORT* CLOUDY 58 57 95 NE8 30.14S TC 15
ROCHELLE* CLOUDY 61 61 100 NE6 30.10S TC 16
DE KALB* CLOUDY 61 60 97 E10G16 30.10F TC 16
PERU* CLOUDY 63 57 82 E16G24 30.06S TC 17
$$
ILZ005-006-012>014-019>023-210700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 63 53 70 E16G24 30.09F TC 17
6HR MIN TEMP: 61; 6HR MAX TEMP: 63; 6HR PCP: 0.04;
CHICAGO-MIDWAY DRIZZLE 61 57 87 E15 30.10R TC 16
6HR MIN TEMP: 61; 6HR MAX TEMP: 63; 6HR PCP: 0.04;
AURORA CLOUDY 62 59 90 E12 30.08F TC 17
6HR MIN TEMP: 61; 6HR MAX TEMP: 63;
JOLIET* CLOUDY 63 61 96 NE13G18 30.08F TC 17
WAUKEGAN CLOUDY 62 56 80 E18G28 30.12S TC 17
6HR MIN TEMP: 61; 6HR MAX TEMP: 64; 6HR PCP: 0.05;
DUPAGE AIRPORT CLOUDY 62 59 90 E8 30.10S TC 17
6HR MIN TEMP: 61; 6HR MAX TEMP: 62; 6HR PCP: TRACE;
KANKAKEE* CLOUDY 60 59 95 E7 30.07R TC 16
WHEELING MOCLDY 63 57 81 E13G20 30.12F TC 17
6HR MIN TEMP: 62; 6HR MAX TEMP: 64; 6HR PCP: 0.04;
ROMEOVILLE* CLOUDY 61 61 100 NE16 30.09S TC 16
LANSING* CLOUDY 60 59 96 NE8 30.09F TC 16
NORTHERLY ISL* N/A 62 56 80 NE22 N/A TC 17
$$
LMZ740>746-210700-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 64 64 70/ 19/ 25 1014.2 6/ 5
WAUKEGAN HARBOR 63 65 40/ 19/ 25 1019.7 5/ 5
WILMETTE BUOY 64 110/ 19/ 25 1021.5R 6/ 7
CHICAGO BUOY 64 65 1018.2 5/ 5
NORTHERLY ISL 63 60/ 16/ 19 N/A
CALUMET HARBOR 62 30/ 12/ 17 1019.1
MICH CITY BUOY 60 58 50/ 14/ 17 N/A 4/ 7
ST. JOSEPH BUOY 59 57 50/ 10/ 14 1019.9R 3/ 6
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-210700-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 66 62 87 NE13 29.99F TC 19
GALESBURG* CLOUDY 62 60 94 NE13 30.05S TC 17
MACOMB* CLOUDY 64 63 97 NE12 30.04F TC 18
JACKSONVILLE* CLOUDY 65 65 100 NE10 29.99S TC 19
PITTSFIELD* CLOUDY 68 65 92 NE10 30.00S TC 20
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-210700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 61 61 99 NE13G21 30.04F TC 16
BLOOMINGTON CLOUDY 62 62 100 NE17 30.03R TC 17
DECATUR CLOUDY 67 66 97 NE15 29.97F TC 19
PEORIA CLOUDY 63 61 93 NE10 30.03S TC 17
6HR MIN TEMP: 63; 6HR MAX TEMP: 67; 6HR PCP: TRACE;
LACON* CLOUDY 62 58 87 E9G16 30.05R TC 17
LINCOLN* CLOUDY 66 66 100 NE12 30.00S TC 19
SPRINGFIELD CLOUDY 66 63 90 NE9 29.98F TC 19
6HR MIN TEMP: 66; 6HR MAX TEMP: 74;
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-210700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN RAIN 65 64 97 NE14 29.98F FOG TC 18
RANTOUL* CLOUDY 64 63 98 NE12G17 30.01S TC 18
MATTOON CLOUDY 70 68 93 NE12 29.95S TC 21
PARIS* RAIN 67 67 98 NE12 29.97S TC 20
$$
ILZ079-100>102-210700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON TSTM 70 69 95 NW5 29.98F TC 21
BELLEVILLE TSTM 72 71 97 NE3 29.94F TC 22
CAHOKIA* TSTM 71 69 93 N3 29.95F TC 22
SPARTA* MOCLDY 75 69 80 NW12 29.96S TC 24
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210700-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* MOCLDY 73 72 95 CALM 29.89S TC 23
EFFINGHAM* HVY RAIN 69 68 94 N7 29.96S TC 21
MARION MOCLDY 77 64 65 N8 29.88S TC 25
MT. VERNON MOCLDY 74 69 85 NE9 29.92S TC 23
CENTRALIA* CLOUDY 74 69 85 N13 29.95R TC 23
SALEM* CLOUDY 73 70 91 MISG 29.98R TC 23
METROPOLIS* PTCLDY 71 71 98 CALM 29.89S TC 22
$$
ILZ067-068-072-073-078-083-087-091-210700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 73 70 90 N7 29.92R TC 23
FLORA* FOG 72 68 88 NE8 29.93F VSB 1/4 TC 22
FAIRFIELD* MOCLDY 73 68 85 N8 29.91F TC 23
HARRISBURG* MOCLDY 78 68 72 N5 29.89S TC 25
ROBINSON* LGT RAIN 72 72 100 N9 29.94R TC 22
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$