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Fitzwilliam, NH

83°F
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Fitzwilliam

New Hampshire

83°
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Fitzwilliam, NH Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Monthly

Air Quality Health & Activities
Extreme Heat Warning

August

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
26
Mostly cloudy and humid
79°
61°
27
Mostly cloudy and humid
81°
60°
28
Mostly cloudy and humid
82°
62°
29
Cloudy and humid
82°
62°
30
Humid with some sun
83°
63°
31
Humid; an afternoon t-storm
83°
63°
1
Mostly cloudy and humid
84°
62°
2
Partly sunny and less humid
80°
58°
3
Low humidity with sunshine
77°
55°
4
Solid cloud cover
77°
56°
5
Morning rain; clouds
78°
60°
6
Mostly sunny
77°
60°
7
Mostly sunny
81°
61°
8
Partly sunny
81°
60°
9
Partly sunny and humid
83°
61°
10
Partly sunny and humid
83°
61°
11
Humid with clouds and sun
82°
60°
12
Partly sunny and humid
81°
61°
13
Mostly cloudy and humid
82°
61°
14
Sunny
83°
59°
15
Partly sunny
83°
60°
16
A couple of afternoon showers
82°
60°
17
Cloudy, showers around; humid
78°
61°
18
Humid with showers around
83°
61°
19
Couple of thunderstorms
82°
60°
20
Humid with thunderstorms
79°
54°
21
Decreasing clouds; less humid
82°
51°
22
Partly sunny
76°
52°
23
Plenty of sun
76°
51°
24
Mostly sunny
77°
54°
25
Partly sunny
76°
51°
26
Partly sunny
76°
53°
27
Mostly sunny
75°
51°
28
A thunderstorm in the area
75°
50°
29
Clouds and sun
74°
49°
30
Mostly sunny
74°
49°
31
Mostly sunny
75°
48°
1
Mostly sunny
73°
48°
2
Mostly sunny
73°
50°
3
Intervals of bright sunshine
74°
50°
4
Occasional rain
71°
52°
5
Rain most of the time
73°
48°

Temperature Graph

°F
90° 80° 70° 60° 50° Aug
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 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

August Weather in Fitzwilliam

Fitzwilliam's August 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 48° and 63°. The average high for August is 79° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Fitzwilliam. See also: September | October | November.

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Weather Near Fitzwilliam:

  • Boston, MA
  • Dorchester, MA
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