S
M
T
W
T
F
S
26
86°
77°
27
86°
79°
28
86°
79°
29
88°
79°
30
86°
79°
1
86°
79°
2
82°
77°
3
84°
77°
4
86°
79°
5
86°
77°
6
65°
58°
7
62°
59°
8
62°
59°
9
63°
59°
10
62°
59°
11
62°
62°
12
64°
63°
13
64°
63°
14
65°
64°
15
65°
63°
16
65°
64°
17
65°
64°
18
66°
63°
19
67°
66°
20
67°
65°
21
66°
65°
22
67°
65°
23
66°
65°
24
67°
65°
25
67°
65°
26
66°
65°
27
66°
65°
28
67°
65°
29
66°
65°
30
66°
65°
31
67°
65°
1
66°
65°
2
66°
65°
3
66°
65°
4
67°
66°
5
66°
65°
6
65°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jamestown
Jamestown's May 2026 forecast shows daily high temperatures ranging from 62° to 67°, with overnight lows between 58° and 66°. The average high for May is 65° 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 May weather will actually feel in Jamestown. See also: June | July | August.
