S
M
T
W
T
F
S
26
97°
64°
27
95°
63°
28
94°
62°
29
95°
62°
30
96°
63°
31
96°
63°
1
94°
62°
2
95°
63°
3
95°
62°
4
94°
61°
5
92°
62°
6
89°
61°
7
90°
62°
8
93°
62°
9
91°
60°
10
92°
58°
11
88°
56°
12
87°
56°
13
87°
57°
14
88°
57°
15
89°
58°
16
88°
59°
17
90°
55°
18
90°
55°
19
92°
55°
20
91°
54°
21
91°
54°
22
90°
56°
23
89°
58°
24
90°
55°
25
90°
56°
26
91°
55°
27
90°
54°
28
90°
53°
29
89°
54°
30
90°
54°
31
93°
55°
1
93°
57°
2
90°
54°
3
88°
53°
4
88°
53°
5
89°
54°
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 87° to 97°, with overnight lows between 53° and 64°. The average high for August is 91° 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 Princeton. See also: September | October | November.
