Union, IL Weather Forecast & Current Conditions

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Union Weather Map
UTC Time: 9/23/2026, 22:54
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Union, IL Regional Weather

Expires:202609232300;;946477
ASUS43 KLOT 232210
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT WED SEP 23 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.


ILZ005-006-012>014-019>023-232300-
NORTHEAST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLOUDY    64  54  69 NE15G22   30.34S TC  18           
CHICAGO-MIDWAY CLOUDY    64  55  72 NE17G25   30.34S TC  18           
AURORA         CLOUDY    66  54  65 NE16G22   30.33R TC  19           
JOLIET*        CLOUDY    64  57  76 NE15      30.33S TC  18           
WAUKEGAN       PTSUNNY   64  54  69 NE9       30.35F TC  18           
DUPAGE AIRPORT CLOUDY    65  54  67 E15       30.34S TC  18           
KANKAKEE*      CLOUDY    64  55  75 NE12      30.32S TC  18           
WHEELING       CLOUDY    65  54  67 VRB7G17   30.37S TC  18           
LANSING*       CLOUDY    62  54  74 NE10      30.34S TC  17           
NORTHERLY ISL*   N/A     63  55  75 NE13        N/A  TC  17           
$$


SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Union, IL

Late Afternoon
Mostly Cloudy
52°11°
0%
Thursday
Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Mostly Cloudy
65°/ 48° 18°/
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
20%
Sunday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Monday
Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
70°/ 58° 21°/ 14°
70%
Wednesday
Rain Showers
68°20°
70%

Day: Mostly cloudy. Temperatures in the mid 60s. East winds around 10 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s. Northeast winds 5 to 10 mph.

Belvidere, IL

Late Afternoon
Mostly Cloudy
52°11°
0%
Thursday
Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
65°/ 48° 18°/
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
20%
Sunday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Monday
Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
68°/ 58° 20°/ 14°
70%
Wednesday
Rain Showers
65°18°
70%

Day: Mostly cloudy. Temperatures in the mid 60s. East winds around 10 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s. Northeast winds 5 to 10 mph.

Aurora, IL

Late Afternoon
Sprinkles
55°13°
0%
Thursday
Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
68°/ 50° 20°/ 10°
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Sunday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Monday
Cloudy
68°/ 55° 20°/ 13°
0%
Tuesday
Rain Showers
72°/ 58° 22°/ 14°
70%
Wednesday
Rain Showers
68°20°
70%

Day: Mostly cloudy. A chance of sprinkles. Temperatures in the mid 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. A chance of sprinkles early in the evening. Lows in the mid 50s. Northeast winds 5 to 10 mph.

DeKalb, IL

Late Afternoon
Mostly Cloudy
55°13°
0%
Thursday
Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
68°/ 50° 20°/ 10°
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
20%
Sunday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Monday
Cloudy
68°/ 55° 20°/ 13°
0%
Tuesday
Rain Showers
72°/ 58° 22°/ 14°
60%
Wednesday
Rain Showers
68°20°
60%

Day: Mostly cloudy. Temperatures in the mid 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Evanston, IL

Late Afternoon
Sprinkles
58°14°
0%
Thursday
Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Sunday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Monday
Cloudy
68°/ 55° 20°/ 13°
0%
Tuesday
Rain Showers
72°/ 60° 22°/ 16°
60%
Wednesday
Rain Showers
68°20°
60%

Day: Mostly cloudy. A chance of sprinkles. Temperatures in the lower 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy. A chance of sprinkles early in the evening. Lows in the upper 50s. East winds 5 to 10 mph.

Waukegan, IL

Late Afternoon
Mostly Cloudy
55°13°
0%
Thursday
Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Sunday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Monday
Cloudy
68°/ 55° 20°/ 13°
0%
Tuesday
Rain Showers
72°/ 58° 22°/ 14°
70%
Wednesday
Rain Showers
68°20°
70%

Day: Mostly cloudy. Temperatures in the lower 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s. East winds 5 to 10 mph.

Whitewater, WI

Today
Partly Cloudy
62°/ 52° 17°/ 11°
0%
Thursday
Sunny
65°/ 55° 18°/ 13°
0%
Friday
Partly Cloudy
65°/ 48° 18°/
0%
Saturday
Partly Cloudy
65°/ 50° 18°/ 10°
0%
Sunday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Monday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
68°20°
40%

Day: Partly sunny. Near steady temperature in the lower 60s. East winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 50s. Northeast winds up to 5 mph.

Rockford, IL

Late Afternoon
Mostly Cloudy
52°11°
0%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
65°/ 48° 18°/
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
20%
Sunday
Mostly Cloudy
65°/ 48° 18°/
0%
Monday
Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
68°/ 58° 20°/ 14°
70%
Wednesday
Rain Showers
65°18°
70%

Day: Mostly cloudy. Temperatures in the mid 60s. East winds around 10 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s. Northeast winds 5 to 10 mph.

Naperville, IL

Late Afternoon
Sprinkles
58°14°
0%
Thursday
Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Sunday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Monday
Cloudy
70°/ 55° 21°/ 13°
0%
Tuesday
Rain Showers
72°/ 62° 22°/ 17°
60%
Wednesday
Rain Showers
68°20°
60%

Day: Mostly cloudy. A chance of sprinkles. Temperatures in the lower 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy. A chance of sprinkles early in the evening. Lows in the upper 50s. Northeast winds 5 to 10 mph.

Kenosha, WI

Today
Mostly Cloudy
62°/ 55° 17°/ 13°
0%
Thursday
Sunny
65°/ 55° 18°/ 13°
0%
Friday
Partly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Partly Cloudy
65°/ 52° 18°/ 11°
0%
Sunday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Monday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
70°21°
30%

Day: Mostly cloudy. Near steady temperature in the lower 60s. Northeast winds 5 to 15 mph.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows in the mid 50s. East winds up to 10 mph.

Rochelle, IL

Late Afternoon
Mostly Cloudy
52°11°
0%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
68°/ 48° 20°/
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
20%
Sunday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Monday
Cloudy
68°/ 55° 20°/ 13°
0%
Tuesday
Rain Showers
70°/ 58° 21°/ 14°
70%
Wednesday
Rain Showers
65°18°
70%

Day: Mostly cloudy. Temperatures in the mid 60s. Northeast winds around 10 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s. Northeast winds 5 to 10 mph.

Janesville, WI

Today
Partly Cloudy
62°/ 52° 17°/ 11°
0%
Thursday
Partly Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Partly Cloudy
65°/ 48° 18°/
0%
Saturday
Partly Cloudy
65°/ 50° 18°/ 10°
20%
Sunday
Mostly Cloudy
65°/ 48° 18°/
0%
Monday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
68°20°
50%

Day: Partly sunny. Near steady temperature in the lower 60s. East winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 50s. Northeast winds up to 10 mph.

Racine, WI

Today
Mostly Cloudy
62°/ 52° 17°/ 11°
0%
Thursday
Partly Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Partly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Partly Cloudy
65°/ 52° 18°/ 11°
0%
Sunday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Monday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
68°20°
30%

Day: Mostly cloudy. Near steady temperature in the lower 60s. Northeast winds 5 to 15 mph.

Night: Partly cloudy. Lows in the lower 50s. Northeast winds up to 10 mph.

Oswego, IL

Late Afternoon
Sprinkles
55°13°
0%
Thursday
Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
68°/ 50° 20°/ 10°
0%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Sunday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Monday
Cloudy
70°/ 55° 21°/ 13°
0%
Tuesday
Rain Showers
75°/ 62° 24°/ 17°
60%
Wednesday
Rain Showers
70°21°
60%

Day: Mostly cloudy. A chance of sprinkles. Temperatures in the mid 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy. A chance of sprinkles early in the evening. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Dixon, IL

Late Afternoon
Mostly Cloudy
55°13°
0%
Thursday
Mostly Cloudy
68°/ 58° 20°/ 14°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
20%
Sunday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Monday
Cloudy
70°/ 55° 21°/ 13°
0%
Tuesday
Rain Showers
72°/ 58° 22°/ 14°
70%
Wednesday
Rain Showers
68°20°
70%

Day: Mostly cloudy. Temperatures in the mid 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Chicago, IL

Late Afternoon
Sprinkles
58°14°
0%
Thursday
Cloudy
68°/ 58° 20°/ 14°
0%
Friday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Saturday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Sunday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Cloudy
68°/ 58° 20°/ 14°
0%
Tuesday
Rain Showers
72°/ 62° 22°/ 17°
60%
Wednesday
Rain Showers
70°21°
60%

Day: Mostly cloudy. A chance of sprinkles. Temperatures in the lower 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy. A chance of sprinkles early in the evening. Lows in the upper 50s. East winds 5 to 10 mph.

Joliet, IL

Late Afternoon
Sprinkles
55°13°
0%
Thursday
Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Sunday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Monday
Cloudy
70°/ 55° 21°/ 13°
0%
Tuesday
Rain Showers
75°/ 62° 24°/ 17°
60%
Wednesday
Rain Showers
70°21°
60%

Day: Mostly cloudy. A chance of sprinkles. Temperatures in the lower 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy. A chance of sprinkles early in the evening. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Watertown, WI

Today
Partly Cloudy
65°/ 50° 18°/ 10°
0%
Thursday
Partly Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Partly Cloudy
68°/ 48° 20°/
0%
Saturday
Partly Cloudy
65°/ 50° 18°/ 10°
20%
Sunday
Mostly Cloudy
65°/ 48° 18°/
0%
Monday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
70°21°
40%

Day: Partly sunny. Highs in the mid 60s. East winds 5 to 10 mph.

Night: Partly cloudy. Lows around 50. Northeast winds up to 5 mph.

Waukesha, WI

Today
Partly Cloudy
62°/ 52° 17°/ 11°
0%
Thursday
Partly Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Partly Cloudy
65°/ 50° 18°/ 10°
0%
Saturday
Partly Cloudy
65°/ 50° 18°/ 10°
0%
Sunday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Monday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Tuesday
Rain Showers
68°20°
30%

Day: Partly sunny. Near steady temperature in the lower 60s. East winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 50s. Northeast winds up to 10 mph.

Ottawa, IL

Late Afternoon
Mostly Cloudy
55°13°
0%
Thursday
Mostly Cloudy
68°/ 58° 20°/ 14°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Mostly Cloudy
68°/ 55° 20°/ 13°
20%
Sunday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Monday
Cloudy
72°/ 55° 22°/ 13°
0%
Tuesday
Rain Showers
75°/ 62° 24°/ 17°
70%
Wednesday
Rain Showers
72°22°
70%

Day: Mostly cloudy. Temperatures in the mid 60s. Northeast winds 10 to 15 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Names listed above may include county names.

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