S
M
T
W
T
F
S
26
105°
78°
27
106°
76°
28
106°
75°
29
105°
78°
30
105°
76°
31
109°
79°
1
98°
76°
2
100°
68°
3
105°
67°
4
105°
71°
5
104°
75°
6
104°
77°
7
105°
78°
8
107°
73°
9
105°
74°
10
105°
78°
11
105°
78°
12
106°
80°
13
106°
78°
14
105°
77°
15
105°
77°
16
106°
73°
17
108°
74°
18
109°
75°
19
110°
76°
20
108°
75°
21
105°
75°
22
110°
76°
23
108°
75°
24
106°
74°
25
104°
73°
26
100°
76°
27
99°
77°
28
98°
75°
29
98°
75°
30
97°
74°
31
98°
75°
1
98°
75°
2
97°
74°
3
97°
75°
4
98°
74°
5
97°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Frederick
Frederick's August 2026 forecast shows daily high temperatures ranging from 97° to 110°, with overnight lows between 73° and 80°. The average high for August is 103° with an average low of 75°. 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 Frederick. See also: September | October | November.