S
M
T
W
T
F
S
26
44°
36°
27
45°
37°
28
53°
37°
29
43°
30°
30
41°
27°
1
49°
23°
2
63°
26°
3
65°
38°
4
58°
35°
5
41°
30°
6
42°
28°
7
51°
27°
8
63°
27°
9
55°
38°
10
49°
32°
11
52°
25°
12
61°
36°
13
67°
39°
14
66°
41°
15
81°
50°
16
71°
43°
17
50°
39°
18
56°
38°
19
51°
40°
20
56°
36°
21
59°
34°
22
56°
37°
23
55°
43°
24
74°
54°
25
79°
57°
26
83°
55°
27
68°
48°
28
70°
47°
29
70°
47°
30
66°
45°
31
69°
52°
1
71°
53°
2
73°
52°
3
71°
52°
4
70°
53°
5
79°
54°
6
64°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Arnold
Arnold's May 2026 forecast shows daily high temperatures ranging from 55° to 83°, with overnight lows between 43° and 57°. The average high for May is 71° with an average low of 51°. 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 Arnold. See also: June | July | August.