S
M
T
W
T
F
S
26
75°
57°
27
80°
59°
28
76°
64°
29
72°
61°
30
74°
59°
31
81°
56°
1
80°
62°
2
74°
63°
3
73°
58°
4
81°
53°
5
83°
62°
6
81°
67°
7
78°
66°
8
80°
65°
9
79°
64°
10
77°
64°
11
76°
62°
12
75°
62°
13
76°
63°
14
78°
60°
15
80°
58°
16
81°
65°
17
75°
62°
18
74°
57°
19
75°
58°
20
72°
56°
21
75°
51°
22
78°
54°
23
68°
53°
24
60°
52°
25
70°
56°
26
75°
52°
27
75°
60°
28
69°
53°
29
75°
48°
30
68°
60°
31
78°
62°
1
84°
69°
2
84°
65°
3
81°
64°
4
73°
65°
5
72°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jamestown
Jamestown's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Jamestown. See also: September | October | November.
