S
M
T
W
T
F
S
26
83°
60°
27
87°
61°
28
80°
65°
29
76°
65°
30
79°
66°
31
86°
64°
1
86°
61°
2
80°
72°
3
86°
64°
4
87°
66°
5
85°
71°
6
86°
69°
7
86°
68°
8
84°
67°
9
86°
68°
10
85°
66°
11
83°
65°
12
81°
64°
13
80°
63°
14
81°
64°
15
78°
63°
16
78°
59°
17
86°
66°
18
85°
62°
19
84°
66°
20
85°
64°
21
83°
61°
22
83°
65°
23
85°
67°
24
86°
67°
25
86°
66°
26
81°
66°
27
78°
65°
28
80°
65°
29
81°
64°
30
82°
65°
31
82°
64°
1
83°
61°
2
75°
56°
3
74°
57°
4
75°
56°
5
74°
56°
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 74° to 87°, with overnight lows between 56° and 72°. The average high for August is 82° with an average low of 64°. 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.