S
M
T
W
T
F
S
28
76°
42°
29
71°
42°
30
71°
39°
1
72°
41°
2
73°
41°
3
75°
43°
4
79°
41°
5
75°
41°
6
74°
42°
7
75°
43°
8
83°
46°
9
84°
44°
10
84°
46°
11
83°
52°
12
84°
54°
13
86°
55°
14
85°
52°
15
85°
48°
16
84°
53°
17
85°
54°
18
86°
56°
19
87°
51°
20
85°
47°
21
77°
47°
22
74°
48°
23
74°
45°
24
77°
53°
25
85°
54°
26
87°
50°
27
86°
50°
28
84°
48°
29
79°
45°
30
78°
46°
31
77°
43°
1
78°
44°
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 71° to 87°, with overnight lows between 39° and 56°. The average high for July is 80° with an average low of 47°. 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.
