S
M
T
W
T
F
S
26
76°
48°
27
82°
48°
28
78°
60°
29
74°
54°
30
64°
42°
1
65°
41°
2
60°
37°
3
64°
47°
4
75°
57°
5
77°
59°
6
68°
46°
7
56°
36°
8
63°
47°
9
70°
48°
10
69°
50°
11
71°
54°
12
72°
53°
13
71°
52°
14
68°
52°
15
73°
58°
16
72°
58°
17
74°
59°
18
77°
59°
19
76°
58°
20
76°
59°
21
78°
60°
22
79°
60°
23
78°
59°
24
73°
59°
25
76°
60°
26
78°
61°
27
77°
59°
28
74°
60°
29
76°
60°
30
74°
56°
31
75°
61°
1
77°
61°
2
80°
62°
3
81°
61°
4
79°
58°
5
74°
57°
6
75°
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 56° to 81°, with overnight lows between 36° and 62°. The average high for May is 73° with an average low of 55°. 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.
