S
M
T
W
T
F
S
26
54°
40°
27
59°
35°
28
66°
30°
29
72°
35°
30
77°
39°
1
74°
40°
2
73°
45°
3
77°
46°
4
63°
46°
5
77°
45°
6
80°
49°
7
75°
47°
8
78°
47°
9
84°
43°
10
83°
43°
11
86°
46°
12
83°
49°
13
69°
41°
14
77°
39°
15
71°
42°
16
61°
40°
17
61°
38°
18
68°
39°
19
74°
39°
20
77°
45°
21
81°
44°
22
85°
46°
23
80°
48°
24
81°
47°
25
77°
43°
26
57°
40°
27
60°
39°
28
68°
50°
29
71°
49°
30
74°
41°
31
80°
43°
1
89°
44°
2
88°
45°
3
87°
46°
4
84°
44°
5
81°
45°
6
80°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in McArthur
McArthur's May 2026 forecast shows daily high temperatures ranging from 57° to 89°, with overnight lows between 39° and 50°. The average high for May is 77° with an average low of 44°. 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 McArthur. See also: June | July | August.
