S
M
T
W
T
F
S
28
82°
67°
29
87°
63°
30
88°
66°
1
96°
76°
2
100°
79°
3
101°
76°
4
97°
75°
5
93°
69°
6
84°
65°
7
86°
62°
8
85°
63°
9
89°
65°
10
87°
66°
11
89°
66°
12
91°
65°
13
91°
67°
14
90°
63°
15
79°
59°
16
80°
60°
17
85°
63°
18
84°
64°
19
87°
66°
20
87°
66°
21
81°
67°
22
82°
66°
23
83°
67°
24
82°
66°
25
84°
66°
26
85°
65°
27
87°
67°
28
86°
66°
29
86°
67°
30
87°
68°
31
88°
68°
1
87°
67°
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 101°, with overnight lows between 59° and 79°. 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.
