S
M
T
W
T
F
S
26
54°
37°
27
52°
37°
28
63°
37°
29
59°
36°
30
48°
39°
1
63°
32°
2
72°
39°
3
75°
54°
4
73°
45°
5
46°
32°
6
41°
32°
7
72°
43°
8
70°
41°
9
77°
48°
10
68°
46°
11
88°
48°
12
77°
57°
13
88°
50°
14
88°
63°
15
82°
55°
16
79°
59°
17
64°
43°
18
43°
37°
19
46°
36°
20
55°
43°
21
66°
41°
22
64°
43°
23
64°
44°
24
70°
47°
25
71°
48°
26
65°
44°
27
60°
46°
28
66°
46°
29
66°
46°
30
64°
45°
31
63°
46°
1
63°
46°
2
66°
46°
3
66°
48°
4
68°
49°
5
69°
41°
6
67°
42°
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 60° to 71°, with overnight lows between 41° and 49°. The average high for May is 66° with an average low of 46°. 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.
