S
M
T
W
T
F
S
26
65°
41°
27
73°
36°
28
68°
39°
29
67°
48°
30
60°
46°
1
65°
35°
2
58°
43°
3
60°
34°
4
73°
36°
5
85°
47°
6
70°
52°
7
64°
42°
8
62°
42°
9
57°
44°
10
70°
44°
11
63°
44°
12
67°
34°
13
68°
44°
14
64°
49°
15
66°
49°
16
81°
43°
17
90°
58°
18
92°
58°
19
97°
64°
20
91°
64°
21
64°
50°
22
68°
46°
23
56°
49°
24
58°
49°
25
77°
55°
26
83°
48°
27
83°
57°
28
70°
50°
29
75°
48°
30
63°
41°
31
70°
50°
1
67°
46°
2
68°
48°
3
70°
52°
4
76°
55°
5
80°
55°
6
77°
56°
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 83°, with overnight lows between 41° and 57°. The average high for May is 73° 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 Gallatin. See also: June | July | August.
