S
M
T
W
T
F
S
26
98°
57°
27
89°
58°
28
92°
57°
29
92°
58°
30
92°
58°
31
91°
55°
1
98°
61°
2
98°
55°
3
82°
52°
4
75°
44°
5
82°
45°
6
86°
48°
7
88°
48°
8
89°
53°
9
89°
53°
10
89°
54°
11
89°
55°
12
86°
56°
13
81°
56°
14
71°
56°
15
79°
46°
16
81°
47°
17
83°
50°
18
82°
54°
19
83°
48°
20
90°
51°
21
91°
56°
22
92°
65°
23
89°
55°
24
81°
48°
25
83°
53°
26
87°
53°
27
86°
56°
28
84°
53°
29
80°
46°
30
74°
44°
31
77°
51°
1
81°
50°
2
81°
49°
3
80°
50°
4
80°
48°
5
78°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gallatin Gateway
Gallatin Gateway's August 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 44° and 56°. The average high for August is 81° 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 August weather will actually feel in Gallatin Gateway. See also: September | October | November.