S
M
T
W
T
F
S
26
70°
47°
27
65°
54°
28
60°
50°
29
61°
41°
30
59°
34°
1
64°
38°
2
63°
36°
3
66°
43°
4
65°
39°
5
58°
34°
6
62°
36°
7
67°
38°
8
74°
39°
9
77°
43°
10
75°
44°
11
71°
41°
12
73°
41°
13
74°
42°
14
72°
40°
15
70°
44°
16
68°
44°
17
69°
43°
18
70°
45°
19
71°
45°
20
72°
44°
21
68°
44°
22
72°
46°
23
76°
47°
24
73°
44°
25
68°
40°
26
68°
38°
27
70°
41°
28
72°
47°
29
78°
48°
30
80°
49°
31
76°
48°
1
72°
48°
2
73°
49°
3
76°
49°
4
79°
48°
5
81°
50°
6
77°
50°
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 58° to 81°, with overnight lows between 34° and 50°. The average high for May is 71° with an average low of 43°. 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.
