S
M
T
W
T
F
S
26
52°
36°
27
53°
37°
28
55°
36°
29
53°
33°
30
56°
40°
1
54°
37°
2
56°
36°
3
62°
42°
4
66°
43°
5
67°
42°
6
57°
42°
7
68°
45°
8
69°
46°
9
69°
43°
10
59°
41°
11
59°
42°
12
60°
42°
13
60°
43°
14
62°
45°
15
67°
46°
16
68°
47°
17
71°
46°
18
67°
36°
19
63°
36°
20
62°
37°
21
63°
36°
22
63°
36°
23
64°
39°
24
65°
43°
25
67°
46°
26
71°
40°
27
67°
40°
28
66°
45°
29
65°
44°
30
73°
42°
31
67°
44°
1
69°
42°
2
70°
47°
3
72°
53°
4
77°
43°
5
72°
44°
6
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Onaway
Onaway's May 2026 forecast shows daily high temperatures ranging from 52° to 77°, with overnight lows between 33° and 53°. The average high for May is 64° with an average low of 42°. 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 Onaway. See also: June | July | August.
