S
M
T
W
T
F
S
26
68°
32°
27
73°
32°
28
67°
36°
29
63°
44°
30
53°
44°
1
62°
39°
2
53°
41°
3
53°
31°
4
73°
30°
5
86°
49°
6
71°
50°
7
63°
39°
8
61°
31°
9
47°
31°
10
74°
46°
11
63°
41°
12
62°
33°
13
52°
34°
14
59°
49°
15
60°
47°
16
80°
41°
17
86°
53°
18
80°
53°
19
96°
52°
20
89°
63°
21
65°
44°
22
69°
35°
23
68°
40°
24
54°
50°
25
72°
48°
26
84°
58°
27
83°
53°
28
68°
47°
29
65°
45°
30
56°
44°
31
68°
46°
1
71°
48°
2
72°
49°
3
75°
50°
4
78°
53°
5
81°
56°
6
78°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Loudon
Loudon's May 2026 forecast shows daily high temperatures ranging from 56° to 84°, with overnight lows between 44° and 58°. The average high for May is 73° with an average low of 50°. 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 Loudon. See also: June | July | August.