S
M
T
W
T
F
S
26
95°
76°
27
99°
70°
28
93°
71°
29
94°
72°
30
96°
74°
31
95°
76°
1
95°
75°
2
96°
72°
3
95°
73°
4
93°
71°
5
92°
69°
6
92°
71°
7
93°
71°
8
93°
72°
9
94°
72°
10
94°
73°
11
96°
76°
12
97°
75°
13
97°
76°
14
96°
74°
15
97°
74°
16
98°
72°
17
94°
71°
18
94°
72°
19
97°
72°
20
95°
70°
21
95°
68°
22
94°
69°
23
95°
71°
24
97°
74°
25
96°
75°
26
96°
71°
27
93°
74°
28
95°
72°
29
92°
73°
30
93°
72°
31
91°
72°
1
94°
70°
2
93°
71°
3
89°
69°
4
89°
66°
5
88°
64°
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 88° to 99°, with overnight lows between 64° and 76°. The average high for August is 94° with an average low of 72°. 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.
