S
M
T
W
T
F
S
31
76°
44°
1
75°
51°
2
77°
46°
3
82°
56°
4
86°
53°
5
90°
58°
6
89°
64°
7
85°
63°
8
76°
57°
9
82°
51°
10
84°
65°
11
93°
70°
12
94°
72°
13
88°
68°
14
91°
64°
15
76°
60°
16
76°
53°
17
83°
56°
18
89°
69°
19
83°
68°
20
83°
59°
21
84°
60°
22
77°
68°
23
81°
60°
24
84°
60°
25
80°
60°
26
78°
61°
27
80°
60°
28
81°
62°
29
81°
64°
30
84°
62°
1
86°
65°
2
84°
65°
3
85°
62°
4
81°
61°
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 77° to 86°, with overnight lows between 59° and 68°. The average high for June is 82° with an average low of 62°. 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.