S
M
T
W
T
F
S
26
52°
30°
27
54°
31°
28
54°
34°
29
48°
34°
30
46°
31°
1
51°
42°
2
52°
35°
3
52°
34°
4
50°
39°
5
53°
32°
6
50°
35°
7
51°
35°
8
52°
35°
9
55°
36°
10
55°
37°
11
57°
37°
12
57°
38°
13
56°
40°
14
61°
48°
15
60°
41°
16
54°
37°
17
59°
35°
18
62°
36°
19
62°
39°
20
61°
40°
21
57°
37°
22
57°
36°
23
58°
40°
24
60°
40°
25
64°
37°
26
61°
37°
27
64°
38°
28
65°
43°
29
64°
41°
30
63°
42°
31
66°
43°
1
66°
44°
2
67°
44°
3
67°
47°
4
66°
46°
5
68°
46°
6
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Donnelly
Donnelly's May 2026 forecast shows daily high temperatures ranging from 50° to 68°, with overnight lows between 32° and 49°. The average high for May is 59° with an average low of 39°. 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 Donnelly. See also: June | July | August.
