S
M
T
W
T
F
S
26
88°
56°
27
89°
58°
28
91°
55°
29
90°
53°
30
92°
51°
31
96°
54°
1
92°
55°
2
76°
51°
3
83°
45°
4
89°
47°
5
94°
49°
6
88°
53°
7
97°
48°
8
91°
58°
9
94°
57°
10
92°
59°
11
90°
60°
12
86°
54°
13
86°
57°
14
92°
58°
15
93°
57°
16
91°
57°
17
89°
56°
18
93°
57°
19
90°
56°
20
91°
58°
21
83°
52°
22
81°
54°
23
83°
53°
24
87°
56°
25
88°
57°
26
88°
58°
27
87°
58°
28
87°
57°
29
85°
57°
30
77°
55°
31
77°
55°
1
80°
56°
2
75°
51°
3
76°
51°
4
80°
50°
5
82°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Trail
Trail's August 2026 forecast shows daily high temperatures ranging from 75° to 94°, with overnight lows between 50° and 60°. The average high for August is 86° 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 August weather will actually feel in Trail. See also: September | October | November.