S
M
T
W
T
F
S
26
60°
41°
27
70°
41°
28
58°
51°
29
53°
40°
30
45°
37°
1
40°
32°
2
42°
31°
3
56°
30°
4
69°
45°
5
65°
48°
6
51°
39°
7
52°
32°
8
55°
36°
9
63°
47°
10
52°
39°
11
54°
34°
12
60°
30°
13
59°
40°
14
43°
39°
15
60°
41°
16
72°
44°
17
79°
62°
18
86°
61°
19
82°
63°
20
65°
46°
21
60°
43°
22
60°
44°
23
56°
45°
24
63°
47°
25
72°
55°
26
78°
50°
27
77°
56°
28
66°
42°
29
72°
39°
30
62°
41°
31
69°
46°
1
68°
46°
2
68°
48°
3
71°
50°
4
78°
56°
5
74°
57°
6
72°
55°
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 78°, with overnight lows between 39° and 57°. The average high for May is 70° with an average low of 48°. 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.
