S
M
T
W
T
F
S
28
89°
73°
29
90°
75°
30
91°
75°
1
90°
75°
2
90°
73°
3
84°
69°
4
82°
67°
5
86°
68°
6
87°
66°
7
89°
65°
8
90°
68°
9
88°
70°
10
81°
68°
11
85°
63°
12
91°
68°
13
92°
68°
14
92°
69°
15
92°
70°
16
93°
70°
17
96°
71°
18
95°
71°
19
96°
70°
20
92°
69°
21
93°
68°
22
86°
66°
23
89°
70°
24
91°
72°
25
91°
71°
26
92°
72°
27
92°
72°
28
91°
71°
29
90°
70°
30
89°
70°
31
86°
69°
1
89°
69°
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 81° to 96°, with overnight lows between 63° and 72°. The average high for July is 91° with an average low of 69°. 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.
