S
M
T
W
T
F
S
26
64°
45°
27
66°
48°
28
55°
43°
29
63°
43°
30
70°
43°
1
75°
43°
2
64°
48°
3
59°
50°
4
55°
48°
5
57°
43°
6
55°
41°
7
59°
41°
8
63°
50°
9
66°
46°
10
57°
41°
11
52°
41°
12
57°
39°
13
52°
43°
14
55°
41°
15
54°
39°
16
55°
41°
17
57°
45°
18
58°
49°
19
63°
52°
20
66°
52°
21
73°
53°
22
79°
59°
23
76°
56°
24
75°
53°
25
72°
51°
26
70°
51°
27
71°
53°
28
70°
52°
29
71°
51°
30
69°
52°
31
61°
47°
1
59°
46°
2
60°
45°
3
64°
49°
4
63°
52°
5
65°
53°
6
67°
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 58° to 79°, with overnight lows between 45° and 59°. The average high for May is 68° 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.