S
M
T
W
T
F
S
26
93°
57°
27
93°
55°
28
93°
55°
29
93°
57°
30
97°
59°
31
99°
61°
1
100°
61°
2
99°
63°
3
100°
63°
4
104°
64°
5
101°
63°
6
104°
66°
7
105°
67°
8
106°
66°
9
104°
63°
10
97°
61°
11
95°
62°
12
93°
60°
13
92°
59°
14
91°
58°
15
91°
59°
16
93°
61°
17
92°
55°
18
92°
59°
19
90°
59°
20
89°
58°
21
91°
58°
22
93°
57°
23
93°
59°
24
92°
59°
25
93°
58°
26
94°
59°
27
93°
59°
28
93°
58°
29
92°
59°
30
91°
58°
31
90°
58°
1
87°
57°
2
89°
57°
3
92°
56°
4
91°
57°
5
89°
57°
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 87° to 106°, with overnight lows between 55° and 67°. The average high for August is 94° 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 August weather will actually feel in Jamestown. See also: September | October | November.
