S
M
T
W
T
F
S
26
88°
72°
27
92°
72°
28
89°
70°
29
85°
63°
30
86°
65°
31
83°
64°
1
81°
70°
2
80°
69°
3
85°
64°
4
88°
61°
5
88°
59°
6
81°
67°
7
91°
69°
8
91°
71°
9
90°
68°
10
95°
76°
11
95°
73°
12
92°
74°
13
94°
72°
14
92°
76°
15
96°
74°
16
98°
76°
17
88°
67°
18
88°
64°
19
87°
67°
20
85°
69°
21
90°
65°
22
87°
65°
23
86°
60°
24
83°
56°
25
86°
57°
26
94°
65°
27
88°
66°
28
89°
63°
29
91°
57°
30
97°
64°
31
100°
70°
1
103°
71°
2
102°
72°
3
102°
73°
4
103°
73°
5
103°
75°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.
