S
M
T
W
T
F
S
28
82°
67°
29
87°
63°
30
88°
66°
1
95°
71°
2
101°
78°
3
101°
73°
4
98°
72°
5
88°
71°
6
74°
66°
7
73°
64°
8
84°
64°
9
81°
68°
10
86°
72°
11
81°
64°
12
85°
61°
13
86°
64°
14
95°
71°
15
97°
72°
16
96°
68°
17
91°
67°
18
89°
65°
19
85°
64°
20
85°
63°
21
80°
63°
22
84°
65°
23
83°
64°
24
86°
65°
25
85°
62°
26
84°
64°
27
83°
62°
28
84°
67°
29
86°
63°
30
81°
64°
31
82°
64°
1
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Princeton
Princeton's July 2026 forecast shows daily high temperatures ranging from 80° to 97°, with overnight lows between 61° and 72°. The average high for July is 86° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Princeton. See also: August | September | October.
