S
M
T
W
T
F
S
26
84°
66°
27
84°
71°
28
81°
68°
29
72°
63°
30
69°
58°
1
65°
55°
2
72°
50°
3
77°
46°
4
78°
56°
5
76°
60°
6
75°
55°
7
71°
53°
8
74°
50°
9
79°
62°
10
81°
61°
11
78°
59°
12
82°
50°
13
86°
51°
14
83°
61°
15
91°
71°
16
87°
66°
17
91°
73°
18
88°
71°
19
84°
68°
20
83°
66°
21
82°
64°
22
80°
62°
23
82°
65°
24
87°
67°
25
88°
67°
26
86°
68°
27
85°
65°
28
87°
68°
29
85°
69°
30
82°
68°
31
83°
65°
1
83°
67°
2
84°
69°
3
85°
69°
4
88°
70°
5
89°
71°
6
89°
71°
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 80° to 91°, with overnight lows between 61° and 73°. The average high for May is 86° with an average low of 68°. 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.
