S
M
T
W
T
F
S
26
85°
64°
27
85°
63°
28
84°
62°
29
84°
62°
30
83°
57°
31
76°
56°
1
76°
56°
2
77°
57°
3
79°
58°
4
78°
57°
5
80°
56°
6
82°
62°
7
82°
63°
8
81°
62°
9
80°
62°
10
80°
55°
11
80°
55°
12
82°
56°
13
81°
61°
14
83°
62°
15
84°
59°
16
82°
63°
17
85°
62°
18
84°
58°
19
80°
54°
20
77°
53°
21
76°
53°
22
76°
54°
23
77°
53°
24
76°
53°
25
79°
54°
26
81°
52°
27
80°
53°
28
78°
55°
29
76°
54°
30
74°
53°
31
78°
57°
1
81°
50°
2
75°
51°
3
73°
50°
4
74°
51°
5
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jonestown
Jonestown's August 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 50° and 64°. The average high for August is 80° with an average low of 57°. 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 Jonestown. See also: September | October | November.