S
M
T
W
T
F
S
26
76°
48°
27
82°
48°
28
78°
60°
29
74°
54°
30
64°
42°
1
68°
39°
2
72°
37°
3
64°
30°
4
80°
41°
5
74°
54°
6
81°
54°
7
65°
43°
8
73°
36°
9
75°
49°
10
82°
46°
11
71°
48°
12
77°
41°
13
79°
51°
14
65°
43°
15
79°
40°
16
82°
56°
17
87°
65°
18
85°
68°
19
83°
59°
20
80°
60°
21
72°
57°
22
74°
58°
23
73°
61°
24
76°
62°
25
73°
59°
26
75°
58°
27
77°
57°
28
75°
57°
29
76°
56°
30
78°
60°
31
74°
59°
1
79°
61°
2
79°
61°
3
77°
60°
4
73°
58°
5
73°
55°
6
78°
62°
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 72° to 87°, with overnight lows between 55° and 68°. The average high for May is 77° with an average low of 60°. 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.
