S
M
T
W
T
F
S
26
66°
34°
27
67°
37°
28
73°
36°
29
75°
40°
30
82°
42°
1
81°
48°
2
83°
51°
3
85°
50°
4
81°
54°
5
80°
52°
6
84°
47°
7
86°
47°
8
81°
47°
9
88°
46°
10
80°
50°
11
88°
47°
12
87°
54°
13
71°
52°
14
78°
44°
15
72°
48°
16
64°
45°
17
67°
44°
18
76°
37°
19
78°
49°
20
78°
52°
21
87°
55°
22
86°
57°
23
86°
57°
24
85°
50°
25
68°
42°
26
77°
46°
27
83°
48°
28
75°
45°
29
73°
46°
30
78°
47°
31
84°
49°
1
76°
46°
2
80°
51°
3
80°
50°
4
79°
50°
5
79°
47°
6
80°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Trail
Trail's May 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 42° and 57°. The average high for May is 80° with an average low of 49°. 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 Trail. See also: June | July | August.
