S
M
T
W
T
F
S
26
57°
23°
27
52°
35°
28
51°
27°
29
53°
25°
30
50°
26°
1
58°
21°
2
73°
35°
3
74°
35°
4
49°
27°
5
43°
27°
6
50°
29°
7
62°
32°
8
65°
36°
9
65°
37°
10
61°
38°
11
64°
44°
12
69°
46°
13
67°
43°
14
71°
46°
15
69°
45°
16
69°
46°
17
68°
41°
18
70°
50°
19
62°
49°
20
64°
42°
21
60°
39°
22
62°
41°
23
65°
44°
24
63°
44°
25
63°
41°
26
64°
42°
27
64°
42°
28
65°
44°
29
68°
51°
30
65°
46°
31
70°
53°
1
76°
55°
2
77°
54°
3
78°
56°
4
79°
58°
5
78°
57°
6
77°
58°
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 43° to 79°, with overnight lows between 27° and 58°. The average high for May is 66° with an average low of 44°. 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.
