S
M
T
W
T
F
S
26
94°
73°
27
94°
74°
28
95°
73°
29
95°
73°
30
94°
74°
31
95°
73°
1
96°
75°
2
96°
73°
3
95°
73°
4
94°
72°
5
95°
73°
6
95°
72°
7
93°
71°
8
93°
72°
9
94°
71°
10
88°
71°
11
91°
72°
12
93°
71°
13
92°
70°
14
93°
71°
15
92°
70°
16
93°
69°
17
93°
62°
18
85°
60°
19
82°
59°
20
82°
59°
21
83°
60°
22
82°
61°
23
82°
63°
24
83°
61°
25
84°
65°
26
87°
65°
27
87°
58°
28
83°
59°
29
84°
66°
30
87°
66°
31
89°
63°
1
89°
58°
2
82°
61°
3
81°
65°
4
87°
66°
5
87°
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 81° to 96°, with overnight lows between 57° and 75°. The average high for August is 90° with an average low of 67°. 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.
