S
M
T
W
T
F
S
26
77°
56°
27
76°
52°
28
63°
47°
29
62°
42°
30
67°
38°
1
65°
33°
2
63°
37°
3
77°
45°
4
82°
52°
5
59°
49°
6
61°
43°
7
69°
38°
8
62°
47°
9
83°
50°
10
69°
45°
11
81°
43°
12
82°
53°
13
77°
47°
14
78°
45°
15
86°
58°
16
84°
66°
17
87°
72°
18
88°
58°
19
66°
47°
20
69°
48°
21
70°
48°
22
77°
57°
23
79°
59°
24
81°
61°
25
80°
60°
26
82°
61°
27
84°
59°
28
81°
60°
29
77°
56°
30
80°
62°
31
81°
63°
1
82°
62°
2
81°
62°
3
74°
58°
4
76°
57°
5
82°
63°
6
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gallatin
Gallatin's May 2026 forecast shows daily high temperatures ranging from 66° to 88°, with overnight lows between 47° and 72°. The average high for May is 79° with an average low of 59°. 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 Gallatin. See also: June | July | August.
