S
M
T
W
T
F
S
26
84°
64°
27
86°
62°
28
88°
65°
29
88°
66°
30
87°
65°
31
85°
65°
1
83°
64°
2
83°
64°
3
84°
66°
4
83°
64°
5
84°
62°
6
83°
61°
7
83°
61°
8
85°
64°
9
83°
65°
10
82°
64°
11
83°
62°
12
82°
62°
13
82°
60°
14
83°
60°
15
84°
62°
16
84°
65°
17
87°
65°
18
87°
64°
19
86°
64°
20
85°
63°
21
85°
57°
22
81°
56°
23
80°
57°
24
81°
58°
25
83°
59°
26
86°
62°
27
87°
63°
28
86°
63°
29
86°
62°
30
85°
62°
31
86°
61°
1
84°
60°
2
83°
59°
3
86°
58°
4
87°
61°
5
87°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Johnsonville
Johnsonville's August 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 56° and 66°. The average high for August is 84° with an average low of 62°. 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 Johnsonville. See also: September | October | November.