S
M
T
W
T
F
S
31
70°
55°
1
69°
51°
2
65°
54°
3
63°
54°
4
65°
53°
5
64°
54°
6
67°
55°
7
70°
56°
8
70°
55°
9
69°
50°
10
63°
48°
11
63°
48°
12
64°
49°
13
63°
48°
14
65°
55°
15
66°
51°
16
64°
52°
17
66°
55°
18
67°
52°
19
65°
51°
20
65°
50°
21
66°
51°
22
69°
60°
23
73°
60°
24
72°
59°
25
69°
59°
26
69°
58°
27
70°
59°
28
73°
59°
29
79°
60°
30
79°
54°
1
73°
56°
2
72°
55°
3
71°
54°
4
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Napanee
Napanee's June 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 48° and 60°. The average high for June is 68° 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 Napanee. See also: July | August | September.