S
M
T
W
T
F
S
28
92°
78°
29
92°
80°
30
93°
77°
1
93°
76°
2
91°
77°
3
92°
77°
4
93°
79°
5
92°
80°
6
92°
77°
7
92°
78°
8
91°
84°
9
93°
81°
10
92°
80°
11
91°
79°
12
92°
78°
13
93°
78°
14
92°
80°
15
92°
79°
16
94°
80°
17
92°
78°
18
91°
80°
19
91°
78°
20
92°
78°
21
90°
79°
22
91°
76°
23
89°
75°
24
89°
76°
25
90°
76°
26
87°
75°
27
86°
74°
28
87°
75°
29
87°
76°
30
88°
76°
31
87°
75°
1
87°
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 86° to 94°, with overnight lows between 74° and 81°. The average high for July is 90° with an average low of 77°. 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.
