S
M
T
W
T
F
S
26
98°
66°
27
97°
64°
28
96°
64°
29
100°
65°
30
99°
66°
31
100°
62°
1
102°
67°
2
104°
70°
3
104°
69°
4
103°
70°
5
100°
67°
6
102°
66°
7
102°
69°
8
100°
71°
9
106°
70°
10
100°
66°
11
96°
63°
12
94°
63°
13
87°
64°
14
84°
59°
15
87°
59°
16
94°
61°
17
95°
69°
18
96°
67°
19
99°
65°
20
96°
66°
21
97°
63°
22
95°
63°
23
98°
64°
24
96°
62°
25
95°
61°
26
97°
62°
27
94°
64°
28
92°
64°
29
95°
61°
30
94°
60°
31
92°
62°
1
92°
59°
2
94°
61°
3
95°
62°
4
86°
55°
5
89°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Princeton
Princeton's August 2026 forecast shows daily high temperatures ranging from 86° to 98°, with overnight lows between 55° and 64°. The average high for August is 94° with an average low of 61°. 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.
