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University Park, IL

72°F
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University Park

Illinois

72°
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University Park, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

September

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
30
82°
67°
31
91°
70°
1
97°
74°
2
95°
71°
3
92°
73°
4
92°
73°
5
84°
72°
6
79°
66°
7
82°
60°
8
85°
60°
9
Rain and a thunderstorm
80°
66°
10
Clouds breaking; less humid
80°
54°
11
Sunny and pleasant
79°
61°
12
A t-storm around in the p.m.
83°
64°
13
Warm with sun and some clouds
84°
68°
14
Very warm with some sun
88°
68°
15
A couple of morning showers
80°
60°
16
Clouds yielding to sun
72°
58°
17
Sunny spells
79°
57°
18
Humid with a stray t-storm
74°
56°
19
Sunshine
68°
49°
20
Partial sunshine
69°
54°
21
Cloudy
71°
53°
22
Sun and clouds
74°
52°
23
Mainly cloudy
71°
57°
24
Warm with clouds and sun
77°
57°
25
Mostly sunny
73°
57°
26
Warm with clouds and sun
77°
56°
27
Cloudy and warm
77°
57°
28
Cloudy, warm and humid
76°
57°
29
Cloudy and remaining warm
76°
56°
30
Plenty of sunshine
75°
54°
1
Mostly sunny
73°
49°
2
Times of clouds and sun
68°
55°
3
A shower in the morning
73°
55°

Temperature Graph

°F
100° 88° 76° 64° 52° Sep
Today 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

September Weather in University Park

University Park's September 2026 forecast shows daily high temperatures ranging from 68° to 88°, with overnight lows between 49° and 68°. The average high for September is 76° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in University Park. See also: October | November | December.

Further Ahead

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December 2026

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World North America United States Illinois University Park

Weather Near University Park:

  • Chicago, IL
  • Joliet, IL
  • Naperville, IL
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