S
M
T
W
T
F
S
28
93°
79°
29
91°
78°
30
93°
78°
1
90°
79°
2
90°
79°
3
91°
76°
4
90°
78°
5
89°
77°
6
89°
80°
7
92°
78°
8
91°
77°
9
93°
78°
10
92°
76°
11
89°
76°
12
88°
75°
13
91°
76°
14
90°
76°
15
91°
75°
16
90°
76°
17
90°
76°
18
89°
75°
19
88°
75°
20
87°
76°
21
88°
76°
22
87°
75°
23
87°
76°
24
88°
76°
25
87°
75°
26
88°
76°
27
87°
76°
28
88°
75°
29
88°
76°
30
89°
76°
31
90°
75°
1
90°
76°
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 87° to 93°, with overnight lows between 75° and 80°. The average high for July is 90° with an average low of 76°. 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.
