S
M
T
W
T
F
S
26
86°
58°
27
90°
60°
28
87°
58°
29
81°
55°
30
80°
56°
31
81°
57°
1
83°
56°
2
88°
58°
3
86°
49°
4
82°
51°
5
83°
53°
6
90°
55°
7
88°
53°
8
82°
50°
9
81°
54°
10
82°
55°
11
87°
57°
12
89°
58°
13
91°
58°
14
89°
54°
15
85°
57°
16
88°
55°
17
88°
50°
18
87°
55°
19
85°
50°
20
79°
51°
21
79°
48°
22
78°
46°
23
76°
47°
24
78°
48°
25
80°
51°
26
84°
55°
27
86°
56°
28
87°
55°
29
84°
54°
30
85°
55°
31
86°
56°
1
87°
55°
2
86°
52°
3
84°
51°
4
83°
48°
5
78°
45°
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 76° to 91°, with overnight lows between 45° and 60°. The average high for August is 84° with an average low of 53°. 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.