S
M
T
W
T
F
S
31
62°
34°
1
66°
33°
2
72°
34°
3
70°
42°
4
88°
53°
5
78°
53°
6
63°
53°
7
66°
46°
8
69°
44°
9
80°
55°
10
83°
56°
11
79°
57°
12
78°
54°
13
77°
54°
14
75°
53°
15
73°
52°
16
70°
55°
17
73°
54°
18
70°
57°
19
77°
57°
20
75°
56°
21
71°
55°
22
73°
51°
23
70°
52°
24
72°
56°
25
70°
59°
26
75°
54°
27
72°
53°
28
72°
54°
29
73°
54°
30
72°
55°
1
72°
54°
2
77°
60°
3
80°
61°
4
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Princeton
Princeton's June 2026 forecast shows daily high temperatures ranging from 63° to 88°, with overnight lows between 44° and 62°. The average high for June is 74° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Princeton. See also: July | August | September.