S
M
T
W
T
F
S
31
71°
49°
1
69°
48°
2
69°
51°
3
77°
54°
4
76°
55°
5
78°
55°
6
72°
54°
7
73°
56°
8
78°
47°
9
72°
48°
10
71°
56°
11
79°
57°
12
81°
57°
13
76°
56°
14
73°
57°
15
81°
57°
16
80°
58°
17
73°
53°
18
75°
48°
19
73°
48°
20
74°
53°
21
81°
59°
22
82°
56°
23
78°
58°
24
75°
52°
25
74°
51°
26
77°
52°
27
81°
53°
28
77°
56°
29
78°
52°
30
78°
52°
1
81°
56°
2
81°
49°
3
75°
51°
4
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Jamestown
Jamestown's June 2026 forecast shows daily high temperatures ranging from 69° to 82°, with overnight lows between 47° and 59°. The average high for June is 76° with an average low of 53°. 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.