S
M
T
W
T
F
S
28
86°
70°
29
92°
70°
30
92°
70°
1
93°
69°
2
93°
71°
3
94°
73°
4
91°
71°
5
87°
70°
6
88°
69°
7
85°
68°
8
87°
67°
9
87°
72°
10
87°
72°
11
81°
70°
12
87°
69°
13
90°
64°
14
92°
66°
15
94°
69°
16
94°
72°
17
89°
72°
18
87°
71°
19
87°
68°
20
89°
70°
21
85°
62°
22
80°
58°
23
79°
59°
24
85°
66°
25
85°
64°
26
83°
65°
27
84°
69°
28
88°
66°
29
83°
62°
30
84°
67°
31
83°
64°
1
86°
68°
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 79° to 94°, with overnight lows between 58° and 72°. The average high for July is 86° with an average low of 66°. 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.
