S
M
T
W
T
F
S
26
57°
40°
27
57°
30°
28
60°
25°
29
62°
25°
30
66°
28°
1
69°
32°
2
75°
34°
3
74°
41°
4
76°
37°
5
65°
40°
6
73°
34°
7
80°
38°
8
80°
37°
9
78°
38°
10
86°
35°
11
90°
41°
12
93°
44°
13
86°
42°
14
76°
34°
15
75°
40°
16
68°
36°
17
45°
31°
18
58°
29°
19
63°
28°
20
73°
31°
21
73°
41°
22
78°
35°
23
79°
52°
24
76°
51°
25
81°
55°
26
74°
39°
27
57°
40°
28
59°
38°
29
62°
39°
30
73°
40°
31
72°
44°
1
79°
46°
2
80°
48°
3
82°
46°
4
82°
47°
5
74°
41°
6
77°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Arthur
Arthur's May 2026 forecast shows daily high temperatures ranging from 57° to 82°, with overnight lows between 38° and 55°. The average high for May is 74° with an average low of 45°. 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 Arthur. See also: June | July | August.