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
83°
66°
2
81°
68°
3
76°
60°
4
83°
60°
5
81°
68°
6
83°
64°
7
84°
64°
8
86°
65°
9
85°
63°
10
83°
62°
11
81°
58°
12
78°
58°
13
79°
54°
14
77°
56°
15
76°
55°
16
75°
53°
17
76°
58°
18
75°
55°
19
75°
58°
20
76°
55°
21
75°
52°
22
75°
56°
23
80°
59°
24
79°
59°
25
77°
58°
26
75°
55°
27
74°
56°
28
73°
58°
29
77°
58°
30
79°
57°
31
79°
56°
1
78°
52°
2
71°
50°
3
70°
51°
4
71°
48°
5
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Winchendon
Winchendon's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 48° and 68°. The average high for August is 78° with an average low of 58°. 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 Winchendon. See also: September | October | November.
