S
M
T
W
T
F
S
26
86°
62°
27
82°
64°
28
85°
67°
29
83°
60°
30
88°
58°
31
88°
61°
1
82°
67°
2
79°
63°
3
82°
59°
4
84°
56°
5
86°
54°
6
86°
69°
7
86°
66°
8
88°
65°
9
87°
57°
10
86°
67°
11
78°
63°
12
75°
62°
13
81°
64°
14
83°
66°
15
80°
71°
16
82°
65°
17
80°
58°
18
81°
60°
19
79°
62°
20
75°
58°
21
78°
56°
22
79°
61°
23
81°
62°
24
81°
60°
25
82°
59°
26
80°
61°
27
77°
60°
28
76°
56°
29
77°
59°
30
79°
63°
31
83°
64°
1
84°
64°
2
85°
63°
3
84°
63°
4
83°
62°
5
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Defiance
Defiance's August 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 56° and 71°. The average high for August is 80° with an average low of 62°. 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 Defiance. See also: September | October | November.
