S
M
T
W
T
F
S
26
60°
46°
27
73°
44°
28
63°
49°
29
58°
46°
30
57°
43°
1
52°
32°
2
51°
34°
3
61°
48°
4
72°
56°
5
63°
44°
6
56°
40°
7
54°
38°
8
58°
45°
9
61°
46°
10
65°
46°
11
64°
47°
12
66°
48°
13
65°
46°
14
63°
49°
15
66°
50°
16
64°
46°
17
67°
54°
18
74°
56°
19
73°
56°
20
73°
57°
21
76°
57°
22
76°
58°
23
77°
54°
24
68°
49°
25
68°
53°
26
72°
59°
27
77°
57°
28
72°
58°
29
71°
54°
30
70°
55°
31
75°
53°
1
70°
53°
2
71°
58°
3
72°
52°
4
71°
52°
5
71°
53°
6
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Defiance
Defiance's May 2026 forecast shows daily high temperatures ranging from 51° to 77°, with overnight lows between 32° and 59°. The average high for May is 67° with an average low of 50°. 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 Defiance. See also: June | July | August.
