S
M
T
W
T
F
S
28
86°
65°
29
85°
64°
30
86°
65°
1
85°
66°
2
87°
66°
3
87°
65°
4
85°
66°
5
81°
62°
6
80°
60°
7
81°
61°
8
80°
60°
9
81°
63°
10
84°
65°
11
87°
66°
12
82°
66°
13
83°
65°
14
83°
66°
15
82°
66°
16
82°
65°
17
83°
65°
18
81°
63°
19
83°
65°
20
85°
66°
21
83°
66°
22
81°
64°
23
84°
65°
24
85°
60°
25
82°
59°
26
81°
60°
27
82°
61°
28
81°
61°
29
82°
60°
30
82°
60°
31
83°
61°
1
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Dayton
Dayton's July 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 59° and 66°. The average high for July is 83° 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 July weather will actually feel in Dayton. See also: August | September | October.
