S
M
T
W
T
F
S
31
85°
63°
1
84°
62°
2
84°
64°
3
89°
66°
4
88°
68°
5
87°
71°
6
89°
69°
7
91°
69°
8
92°
68°
9
91°
66°
10
86°
66°
11
87°
70°
12
88°
69°
13
92°
69°
14
94°
70°
15
95°
67°
16
87°
70°
17
91°
73°
18
94°
74°
19
95°
74°
20
95°
73°
21
94°
74°
22
95°
73°
23
95°
74°
24
94°
72°
25
95°
70°
26
93°
72°
27
93°
70°
28
94°
71°
29
92°
69°
30
92°
70°
1
93°
72°
2
94°
73°
3
96°
75°
4
97°
72°
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 84° to 97°, with overnight lows between 62° and 75°. The average high for June is 91° with an average low of 70°. 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.