S
M
T
W
T
F
S
26
89°
71°
27
90°
71°
28
89°
70°
29
90°
71°
30
91°
72°
31
91°
72°
1
90°
71°
2
88°
70°
3
84°
68°
4
84°
70°
5
85°
70°
6
83°
68°
7
84°
67°
8
84°
69°
9
86°
69°
10
87°
70°
11
89°
70°
12
86°
69°
13
85°
68°
14
88°
68°
15
84°
69°
16
84°
69°
17
88°
68°
18
89°
69°
19
88°
68°
20
88°
63°
21
86°
61°
22
83°
61°
23
82°
62°
24
83°
63°
25
84°
62°
26
83°
67°
27
88°
63°
28
87°
63°
29
83°
64°
30
82°
60°
31
82°
59°
1
80°
60°
2
80°
64°
3
81°
65°
4
81°
60°
5
84°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fredericksburg
Fredericksburg's August 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 59° and 72°. The average high for August is 86° with an average low of 67°. 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 Fredericksburg. See also: September | October | November.