S
M
T
W
T
F
S
26
59°
31°
27
61°
34°
28
54°
39°
29
50°
32°
30
46°
28°
1
44°
34°
2
51°
32°
3
50°
28°
4
67°
33°
5
49°
36°
6
43°
30°
7
46°
32°
8
55°
32°
9
57°
39°
10
52°
36°
11
46°
32°
12
46°
32°
13
48°
38°
14
63°
39°
15
64°
36°
16
73°
47°
17
61°
43°
18
71°
49°
19
72°
42°
20
49°
37°
21
52°
32°
22
63°
33°
23
61°
47°
24
53°
42°
25
69°
47°
26
79°
46°
27
73°
47°
28
67°
48°
29
76°
41°
30
66°
43°
31
76°
40°
1
71°
44°
2
78°
43°
3
78°
45°
4
80°
44°
5
74°
55°
6
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dayton
Dayton's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Dayton. See also: June | July | August.
