S
M
T
W
T
F
S
26
87°
59°
27
87°
63°
28
88°
63°
29
89°
66°
30
95°
61°
31
86°
62°
1
85°
62°
2
85°
63°
3
86°
61°
4
86°
59°
5
85°
60°
6
84°
61°
7
86°
63°
8
89°
61°
9
87°
60°
10
87°
59°
11
88°
58°
12
89°
57°
13
86°
58°
14
85°
61°
15
91°
60°
16
92°
61°
17
91°
60°
18
91°
60°
19
92°
59°
20
92°
60°
21
91°
60°
22
86°
59°
23
88°
58°
24
90°
60°
25
89°
59°
26
91°
54°
27
84°
49°
28
79°
51°
29
80°
50°
30
Hist. Avg.
88°
48°
31
Hist. Avg.
88°
47°
1
Hist. Avg.
88°
47°
2
Hist. Avg.
87°
47°
3
Hist. Avg.
87°
46°
4
Hist. Avg.
87°
46°
5
Hist. Avg.
86°
46°
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 79° to 95°, with overnight lows between 49° and 66°. The average high for August is 88° with an average low of 59°. 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.
