S
M
T
W
T
F
S
26
45°
35°
27
52°
40°
28
50°
32°
29
59°
35°
30
60°
32°
1
66°
28°
2
76°
26°
3
75°
37°
4
76°
35°
5
49°
40°
6
58°
37°
7
74°
33°
8
76°
41°
9
78°
40°
10
76°
42°
11
92°
47°
12
80°
49°
13
87°
41°
14
91°
53°
15
90°
39°
16
84°
51°
17
68°
48°
18
50°
43°
19
64°
40°
20
56°
43°
21
64°
39°
22
70°
43°
23
79°
42°
24
91°
53°
25
95°
50°
26
88°
60°
27
83°
58°
28
78°
58°
29
81°
59°
30
85°
57°
31
87°
48°
1
83°
50°
2
84°
59°
3
90°
64°
4
86°
60°
5
85°
59°
6
91°
62°
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 85° to 91°, with overnight lows between 59° and 62°. The average high for May is 87° with an average low of 60°. 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.