S
M
T
W
T
F
S
26
93°
61°
27
94°
63°
28
95°
63°
29
96°
62°
30
96°
63°
31
95°
63°
1
94°
62°
2
94°
62°
3
95°
61°
4
95°
62°
5
94°
61°
6
95°
62°
7
96°
63°
8
97°
62°
9
97°
63°
10
96°
63°
11
95°
62°
12
94°
62°
13
93°
61°
14
89°
59°
15
90°
60°
16
91°
60°
17
88°
59°
18
87°
58°
19
88°
57°
20
87°
56°
21
95°
61°
22
96°
61°
23
92°
59°
24
95°
60°
25
92°
58°
26
93°
57°
27
93°
57°
28
92°
56°
29
92°
56°
30
90°
58°
31
94°
58°
1
94°
59°
2
93°
58°
3
91°
59°
4
87°
59°
5
92°
58°
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 56° and 63°. The average high for August is 93° with an average low of 60°. 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.
