S
M
T
W
T
F
S
26
77°
55°
27
77°
52°
28
75°
51°
29
76°
53°
30
77°
54°
31
77°
59°
1
79°
57°
2
85°
55°
3
80°
54°
4
82°
61°
5
86°
57°
6
86°
62°
7
85°
62°
8
86°
60°
9
85°
53°
10
77°
52°
11
76°
51°
12
77°
55°
13
79°
60°
14
83°
53°
15
78°
51°
16
81°
52°
17
Hist. Avg.
80°
55°
18
Hist. Avg.
80°
55°
19
Hist. Avg.
80°
55°
20
Hist. Avg.
79°
55°
21
Hist. Avg.
79°
54°
22
Hist. Avg.
79°
54°
23
Hist. Avg.
79°
54°
24
Hist. Avg.
79°
54°
25
Hist. Avg.
78°
53°
26
Hist. Avg.
78°
53°
27
Hist. Avg.
78°
53°
28
Hist. Avg.
78°
52°
29
Hist. Avg.
77°
52°
30
Hist. Avg.
77°
52°
31
Hist. Avg.
77°
52°
1
Hist. Avg.
76°
51°
2
Hist. Avg.
76°
51°
3
Hist. Avg.
76°
51°
4
Hist. Avg.
76°
50°
5
Hist. Avg.
75°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Jamestown
Jamestown's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 51° and 62°. The average high for August is 80° 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 August weather will actually feel in Jamestown. See also: September | October | November.
