S
M
T
W
T
F
S
26
84°
55°
27
83°
58°
28
80°
63°
29
75°
59°
30
66°
49°
1
67°
45°
2
66°
43°
3
69°
38°
4
81°
48°
5
77°
56°
6
72°
54°
7
67°
48°
8
75°
41°
9
79°
52°
10
86°
51°
11
74°
50°
12
80°
45°
13
82°
60°
14
72°
48°
15
81°
44°
16
85°
60°
17
91°
58°
18
91°
62°
19
92°
71°
20
84°
69°
21
82°
46°
22
76°
66°
23
77°
62°
24
81°
67°
25
78°
65°
26
78°
67°
27
81°
68°
28
84°
69°
29
81°
67°
30
78°
61°
31
75°
61°
1
82°
66°
2
82°
67°
3
83°
66°
4
84°
61°
5
81°
65°
6
83°
64°
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 75° to 84°, with overnight lows between 61° and 69°. The average high for May is 80° with an average low of 65°. 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.
