S
M
T
W
T
F
S
26
80°
58°
27
83°
64°
28
80°
64°
29
77°
57°
30
81°
54°
31
85°
58°
1
77°
66°
2
79°
66°
3
78°
54°
4
82°
49°
5
85°
62°
6
84°
61°
7
82°
68°
8
85°
65°
9
83°
58°
10
79°
64°
11
76°
63°
12
76°
62°
13
78°
64°
14
80°
63°
15
83°
71°
16
84°
69°
17
80°
58°
18
80°
59°
19
80°
63°
20
78°
55°
21
76°
57°
22
78°
58°
23
79°
60°
24
78°
58°
25
77°
56°
26
78°
56°
27
76°
57°
28
76°
55°
29
76°
57°
30
79°
60°
31
82°
60°
1
84°
61°
2
84°
61°
3
83°
60°
4
82°
59°
5
80°
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 76° to 84°, with overnight lows between 55° and 71°. The average high for August is 80° with an average low of 60°. 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.