S
M
T
W
T
F
S
26
64°
47°
27
78°
47°
28
71°
58°
29
63°
51°
30
58°
42°
1
52°
37°
2
50°
32°
3
62°
30°
4
72°
58°
5
69°
46°
6
59°
43°
7
57°
40°
8
64°
46°
9
63°
48°
10
69°
52°
11
64°
47°
12
62°
50°
13
67°
52°
14
68°
48°
15
67°
50°
16
71°
54°
17
75°
52°
18
73°
57°
19
74°
56°
20
77°
52°
21
74°
52°
22
68°
48°
23
66°
48°
24
68°
50°
25
68°
52°
26
69°
50°
27
68°
51°
28
70°
51°
29
70°
52°
30
71°
55°
31
75°
59°
1
72°
55°
2
73°
54°
3
74°
59°
4
76°
58°
5
78°
61°
6
81°
63°
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 57° to 81°, with overnight lows between 40° and 63°. The average high for May is 70° with an average low of 52°. 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.
