S
M
T
W
T
F
S
31
84°
53°
1
N/A
2
80°
54°
3
81°
55°
4
84°
58°
5
85°
61°
6
87°
65°
7
88°
67°
8
88°
66°
9
86°
65°
10
86°
65°
11
83°
66°
12
84°
66°
13
83°
64°
14
83°
63°
15
84°
61°
16
82°
64°
17
79°
64°
18
79°
65°
19
80°
65°
20
78°
64°
21
79°
66°
22
80°
65°
23
81°
65°
24
80°
63°
25
81°
65°
26
83°
66°
27
82°
66°
28
81°
66°
29
81°
62°
30
80°
60°
1
80°
60°
2
81°
64°
3
80°
67°
4
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Jamestown
Jamestown's June 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 54° and 67°. The average high for June is 82° with an average low of 64°. 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 Jamestown. See also: July | August | September.