Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 210906
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 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.
ILZ001-002-007-009-015-016-024-211000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 61 59 93 E7 30.05S TC 16
STERLING* CLOUDY 61 60 97 E20G26 30.07F TC 16
SAVANNA* CLOUDY 58 56 91 NE8 30.09R TC 15
$$
ILZ003-004-008-010-011-017-018-211000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 60 55 83 E8 30.12S TC 16
FREEPORT* CLOUDY 58 56 95 NE8 30.12S TC 14
ROCHELLE* CLOUDY 60 56 86 E10 30.09S TC 16
DE KALB* CLOUDY 59 55 87 E12 30.10S TC 15
$$
ILZ005-006-012>014-019>023-211000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 61 54 77 E15G21 30.09S TC 16
CHICAGO-MIDWAY CLOUDY 61 55 81 E15 30.08F TC 16
AURORA CLOUDY 60 56 86 E12G21 30.08S TC 16
JOLIET* CLOUDY 61 59 94 NE10 30.08R TC 16
WAUKEGAN MOCLDY 61 54 77 E13G23 30.11S TC 16
DUPAGE AIRPORT LGT RAIN 59 55 87 E10 30.09F TC 15
KANKAKEE* CLOUDY 61 59 94 NE9 30.05F TC 16
WHEELING CLOUDY 61 55 81 E12 30.12R TC 16
ROMEOVILLE* CLOUDY 59 59 100 NE12G23 30.08S TC 15
LANSING* CLOUDY 59 55 85 NE12 30.08S TC 15
NORTHERLY ISL* N/A 61 55 81 NE18 N/A TC 16
$$
LMZ740>746-211000-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 63 64 60/ 19/ 25 1014.3R 5/ 6
WAUKEGAN HARBOR 63 64 20/ 19/ 29 1019.2S 6/ 6
WILMETTE BUOY 63 100/ 19/ 25 1020.7F 7/ 8
CHICAGO BUOY 63 65 1017.9R 5/ 8
NORTHERLY ISL 61 60/ 20/ 23 N/A
CALUMET HARBOR 61 30/ 13/ 18 1018.8S
MICH CITY BUOY 58 58 40/ 14/ 17 N/A 6/ 7
ST. JOSEPH BUOY 57 55 40/ 10/ 14 1019.5F 5/ 7
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-211000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 64 62 93 NE12 29.99F TC 18
GALESBURG* CLOUDY 61 60 97 E12G17 30.05S TC 16
MACOMB* CLOUDY 62 62 100 NE3 30.06R FOG TC 17
JACKSONVILLE* CLOUDY 63 63 100 NE8G16 29.98F TC 17
PITTSFIELD* CLOUDY 65 64 99 NE7 29.99S TC 18
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-211000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 61 60 96 NE9 30.04S TC 16
BLOOMINGTON CLOUDY 60 60 100 E13 30.05R TC 16
DECATUR LGT RAIN 63 62 97 E9 30.00S TC 17
PEORIA CLOUDY 62 59 90 E9G22 30.04R TC 17
LACON* CLOUDY 61 56 84 NE5 30.05R TC 16
LINCOLN* DRIZZLE 63 63 100 NE8 30.02S TC 17
SPRINGFIELD HVY RAIN 64 63 96 N9 29.99S FOG TC 18
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-211000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 60 59 96 E10 30.02R TC 16
RANTOUL* CLOUDY 60 59 95 NE9 30.02R TC 16
MATTOON RAIN 66 65 96 NE8 29.98R FOG TC 19
PARIS* RAIN 61 61 98 N6 30.00R TC 16
$$
ILZ079-100>102-211000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 70 68 95 CALM 29.93F TC 21
BELLEVILLE PTCLDY 71 71 97 E6 29.91S TC 22
CAHOKIA* CLOUDY 71 69 93 CALM 29.93R TC 22
SPARTA* MOCLDY 70 70 100 CALM 29.94S TC 21
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* PTCLDY 76 70 81 N6 29.91S TC 25
EFFINGHAM* HVY RAIN 68 67 94 NE3 29.97F TC 20
MARION CLOUDY 73 66 78 NE12 29.92S TC 23
MT. VERNON CLOUDY 69 67 93 NE5 29.93F TC 21
CENTRALIA* MOCLDY 69 68 98 CALM 29.94F TC 20
SALEM* MOCLDY 70 69 99 MISG 29.94F TC 21
METROPOLIS* PTCLDY 74 69 83 NW7 29.91R TC 24
$$
ILZ067-068-072-073-078-083-087-091-211000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 69 67 93 N7 29.95R THUNDER TC 21
FLORA* HVY RAIN 68 N/A N/A CALM 29.96F FOG TC 20
FAIRFIELD* CLOUDY 70 66 87 NE7 29.94F TC 21
HARRISBURG* CLOUDY 73 69 87 N12G23 29.93F TC 23
ROBINSON* RAIN 68 68 100 N2 29.97R TC 20
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$