S
M
T
W
T
F
S
26
63°
28°
27
70°
31°
28
54°
39°
29
42°
33°
30
41°
29°
1
42°
27°
2
42°
27°
3
56°
25°
4
61°
33°
5
51°
33°
6
46°
30°
7
44°
33°
8
49°
31°
9
53°
30°
10
49°
35°
11
45°
30°
12
55°
34°
13
45°
39°
14
63°
37°
15
69°
31°
16
72°
45°
17
60°
38°
18
78°
45°
19
67°
40°
20
48°
31°
21
58°
26°
22
67°
30°
23
72°
37°
24
57°
49°
25
78°
51°
26
80°
51°
27
62°
46°
28
69°
45°
29
69°
43°
30
71°
41°
31
70°
49°
1
75°
43°
2
78°
47°
3
87°
57°
4
84°
58°
5
72°
58°
6
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mount MacDonald
Mount MacDonald's May 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 53° and 58°. The average high for May is 79° with an average low of 57°. 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 Mount MacDonald. See also: June | July | August.
