S
M
T
W
T
F
S
26
96°
76°
27
91°
76°
28
90°
72°
29
87°
72°
30
84°
67°
31
80°
63°
1
80°
62°
2
84°
64°
3
84°
65°
4
84°
66°
5
72°
62°
6
80°
67°
7
86°
66°
8
82°
66°
9
90°
72°
10
88°
75°
11
90°
74°
12
88°
74°
13
87°
74°
14
79°
71°
15
88°
73°
16
78°
65°
17
82°
61°
18
82°
67°
19
82°
64°
20
84°
62°
21
87°
64°
22
N/A
23
81°
60°
24
80°
65°
25
85°
66°
26
86°
61°
27
85°
61°
28
81°
63°
29
88°
67°
30
87°
66°
31
85°
63°
1
81°
57°
2
80°
59°
3
79°
58°
4
76°
61°
5
75°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Princeton
Princeton's August 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 57° and 67°. The average high for August is 82° with an average low of 62°. 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 Princeton. See also: September | October | November.
