S
M
T
W
T
F
S
26
84°
57°
27
84°
61°
28
82°
63°
29
75°
58°
30
67°
50°
1
66°
44°
2
63°
39°
3
67°
50°
4
80°
59°
5
77°
58°
6
64°
45°
7
65°
41°
8
68°
50°
9
71°
51°
10
73°
54°
11
75°
56°
12
77°
55°
13
74°
52°
14
76°
53°
15
74°
58°
16
77°
58°
17
79°
59°
18
79°
59°
19
78°
58°
20
79°
60°
21
80°
60°
22
81°
61°
23
80°
60°
24
75°
60°
25
78°
61°
26
80°
62°
27
77°
61°
28
76°
58°
29
78°
60°
30
76°
56°
31
77°
61°
1
80°
62°
2
83°
63°
3
84°
63°
4
84°
62°
5
76°
61°
6
77°
57°
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 63° to 84°, with overnight lows between 39° and 63°. The average high for May is 76° with an average low of 56°. 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.
