S
M
T
W
T
F
S
31
75°
52°
1
77°
55°
2
68°
48°
3
75°
50°
4
80°
54°
5
83°
58°
6
85°
61°
7
83°
63°
8
82°
62°
9
79°
61°
10
78°
61°
11
80°
59°
12
81°
60°
13
78°
55°
14
79°
56°
15
79°
60°
16
80°
59°
17
80°
60°
18
74°
60°
19
75°
59°
20
74°
60°
21
74°
61°
22
76°
62°
23
78°
61°
24
76°
60°
25
76°
61°
26
78°
62°
27
79°
61°
28
80°
62°
29
77°
57°
30
76°
56°
1
76°
56°
2
77°
59°
3
77°
63°
4
76°
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 68° to 85°, with overnight lows between 48° and 63°. The average high for June is 78° with an average low of 59°. 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.