S
M
T
W
T
F
S
28
86°
70°
29
92°
70°
30
92°
70°
1
93°
69°
2
93°
71°
3
92°
69°
4
91°
71°
5
87°
70°
6
87°
66°
7
84°
65°
8
86°
66°
9
86°
71°
10
87°
67°
11
86°
65°
12
83°
65°
13
84°
64°
14
86°
66°
15
87°
67°
16
86°
75°
17
82°
61°
18
82°
62°
19
84°
68°
20
84°
67°
21
86°
67°
22
84°
68°
23
88°
68°
24
89°
67°
25
89°
68°
26
88°
69°
27
89°
69°
28
88°
68°
29
89°
69°
30
90°
68°
31
88°
68°
1
83°
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 82° to 92°, with overnight lows between 61° and 75°. The average high for July is 87° 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 July weather will actually feel in Princeton. See also: August | September | October.
