S
M
T
W
T
F
S
26
87°
73°
27
88°
75°
28
92°
75°
29
85°
68°
30
69°
62°
1
62°
52°
2
74°
49°
3
81°
53°
4
82°
59°
5
85°
70°
6
82°
63°
7
74°
58°
8
78°
61°
9
89°
71°
10
88°
70°
11
78°
65°
12
83°
61°
13
88°
61°
14
90°
67°
15
90°
70°
16
88°
71°
17
86°
77°
18
90°
78°
19
88°
67°
20
80°
65°
21
80°
66°
22
88°
69°
23
86°
66°
24
86°
63°
25
89°
68°
26
89°
67°
27
77°
69°
28
90°
71°
29
91°
73°
30
91°
72°
31
91°
72°
1
87°
67°
2
85°
68°
3
82°
65°
4
85°
67°
5
85°
68°
6
84°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Huntsville
Huntsville's May 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 65° and 73°. The average high for May is 86° with an average low of 69°. 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 Huntsville. See also: June | July | August.