S
M
T
W
T
F
S
26
68°
43°
27
66°
45°
28
69°
43°
29
66°
43°
30
71°
46°
31
72°
45°
1
69°
42°
2
68°
41°
3
67°
43°
4
69°
43°
5
71°
43°
6
71°
42°
7
74°
46°
8
Hist. Avg.
69°
39°
9
Hist. Avg.
68°
39°
10
Hist. Avg.
68°
39°
11
Hist. Avg.
68°
39°
12
Hist. Avg.
68°
38°
13
Hist. Avg.
68°
38°
14
Hist. Avg.
68°
38°
15
Hist. Avg.
68°
38°
16
Hist. Avg.
68°
38°
17
Hist. Avg.
68°
38°
18
Hist. Avg.
67°
38°
19
Hist. Avg.
67°
37°
20
Hist. Avg.
67°
37°
21
Hist. Avg.
67°
37°
22
Hist. Avg.
67°
37°
23
Hist. Avg.
67°
37°
24
Hist. Avg.
66°
36°
25
Hist. Avg.
66°
36°
26
Hist. Avg.
66°
36°
27
Hist. Avg.
66°
36°
28
Hist. Avg.
66°
36°
29
Hist. Avg.
66°
35°
30
Hist. Avg.
65°
35°
31
Hist. Avg.
65°
35°
1
Hist. Avg.
65°
35°
2
Hist. Avg.
65°
34°
3
Hist. Avg.
64°
34°
4
Hist. Avg.
64°
34°
5
Hist. Avg.
64°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Jefferson
Jefferson's August 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 41° and 46°. The average high for August is 69° with an average low of 43°. 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 Jefferson. See also: September | October | November.