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Windham, NH

76°F
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Windham

New Hampshire

76°
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Windham, NH 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°
55°
31
Sunny to partly cloudy
80°
62°
1
Cooler with rain at times
67°
60°
2
Cloudy
71°
61°
3
Humid; a p.m. t-storm or two
76°
59°
4
A little afternoon rain
81°
58°
5
Not as warm
71°
52°
6
Partly sunny
72°
51°
7
Partly sunny
76°
53°
8
Sunshine and a few clouds
75°
55°
9
A couple of afternoon showers
75°
54°
10
Humid; a little p.m. rain
78°
57°
11
Less humid with some sun
79°
54°
12
Intervals of bright sunshine
73°
53°
13
Mostly sunny
74°
54°
14
Sunshine and less humid
78°
55°
15
Partly sunny
72°
54°
16
Mostly sunny
73°
55°
17
Times of clouds and sun
77°
55°
18
Plenty of sunshine
69°
51°
19
Plenty of sunshine
70°
51°
20
Sunshine
71°
53°
21
Clouds breaking for some sun
75°
55°
22
Humid with brilliant sunshine
76°
55°
23
Mostly sunny
76°
54°
24
Mostly sunny and less humid
75°
53°
25
Plenty of sunshine
74°
52°
26
Sunshine
74°
53°
27
Sun and clouds
75°
52°
28
Plenty of sunshine
74°
51°
29
Plenty of sunshine
73°
49°
30
Sunny
66°
45°
1
Clouds and sun
63°
45°
2
Mostly cloudy
64°
49°
3
Mostly sunny
71°
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 Windham

Windham's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 45° and 62°. The average high for September is 73° 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 Windham. See also: October | November | December.

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World North America United States New Hampshire Windham

Weather Near Windham:

  • Boston, MA
  • Dorchester, MA
  • Worcester, MA
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