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Nilwood, IL

72°F
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Nilwood

Illinois

72°
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Nilwood, 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
A shower and t-storm; humid
88°
57°
31
Not as warm
79°
61°
1
Mostly sunny
80°
60°
2
A stray afternoon t-storm
86°
65°
3
A stray afternoon t-shower
88°
66°
4
Partly sunny, warm and humid
88°
65°
5
Mostly sunny and warm
89°
59°
6
Humid with a thundershower
86°
56°
7
Mostly sunny and less humid
79°
54°
8
Sunny
78°
55°
9
Plenty of sunshine
79°
62°
10
Partly sunny
82°
60°
11
Mostly cloudy
78°
54°
12
Rain at times
77°
53°
13
Partly sunny
76°
58°
14
Mostly sunny
78°
60°
15
A touch of morning rain
80°
50°
16
Variable clouds with t-storms
84°
50°
17
Not as warm with sunny spells
74°
50°
18
Partly sunny
73°
51°
19
Partly sunny
73°
50°
20
Periods of rain
74°
49°
21
Mostly cloudy
72°
48°
22
Sunshine and a few clouds
73°
48°
23
Sun and some clouds
74°
49°
24
Mostly sunny
76°
53°
25
Mostly sunny
78°
56°
26
Sunny
79°
54°
27
Partly sunny and warm
80°
53°
28
Mostly sunny and less humid
72°
57°
29
Partly sunny
77°
48°
30
An afternoon t-storm or two
79°
48°
1
Less humid with some sun
72°
51°
2
Cloudy with afternoon rain
71°
45°
3
A little morning rain
68°
49°

Temperature Graph

°F
90° 80° 70° 60° 50° Sep
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 Nilwood

Nilwood's September 2026 forecast shows daily high temperatures ranging from 68° to 89°, with overnight lows between 45° and 66°. The average high for September is 78° with an average low of 54°. 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 Nilwood. See also: October | November | December.

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Weather Near Nilwood:

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