S
M
T
W
T
F
S
26
80°
48°
27
86°
50°
28
79°
62°
29
69°
63°
30
77°
61°
31
79°
58°
1
85°
59°
2
84°
69°
3
78°
62°
4
84°
57°
5
84°
58°
6
89°
66°
7
89°
69°
8
88°
67°
9
86°
65°
10
83°
59°
11
82°
61°
12
83°
57°
13
82°
59°
14
81°
55°
15
78°
51°
16
80°
47°
17
75°
65°
18
82°
63°
19
82°
59°
20
78°
52°
21
80°
53°
22
73°
61°
23
74°
57°
24
75°
53°
25
76°
52°
26
77°
53°
27
78°
54°
28
76°
53°
29
75°
54°
30
75°
53°
31
76°
54°
1
75°
52°
2
72°
50°
3
72°
54°
4
75°
52°
5
67°
51°
Temperature Graph
°F
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 67° to 82°, with overnight lows between 50° and 61°. The average high for August is 75° 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 August weather will actually feel in Fitzwilliam. See also: September | October | November.