S
M
T
W
T
F
S
26
83°
59°
27
77°
57°
28
78°
62°
29
78°
58°
30
76°
58°
31
76°
62°
1
78°
61°
2
80°
62°
3
80°
63°
4
78°
62°
5
78°
58°
6
75°
55°
7
76°
58°
8
78°
58°
9
74°
59°
10
75°
57°
11
76°
54°
12
75°
57°
13
77°
61°
14
78°
58°
15
74°
54°
16
73°
53°
17
74°
56°
18
74°
60°
19
75°
61°
20
81°
61°
21
79°
60°
22
79°
59°
23
76°
59°
24
84°
56°
25
79°
58°
26
82°
55°
27
81°
51°
28
75°
50°
29
72°
49°
30
71°
49°
31
71°
48°
1
73°
53°
2
73°
58°
3
74°
58°
4
81°
57°
5
82°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Princetown
Princetown'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 77° with an average low of 57°. 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 Princetown. See also: September | October | November.