S
M
T
W
T
F
S
26
61°
31°
27
65°
34°
28
68°
36°
29
73°
37°
30
77°
40°
1
77°
40°
2
80°
46°
3
85°
48°
4
82°
47°
5
78°
46°
6
83°
51°
7
81°
50°
8
75°
49°
9
75°
46°
10
81°
45°
11
83°
48°
12
81°
49°
13
76°
46°
14
76°
45°
15
70°
42°
16
65°
44°
17
66°
43°
18
63°
39°
19
63°
39°
20
64°
40°
21
67°
42°
22
74°
49°
23
67°
43°
24
75°
49°
25
76°
49°
26
72°
48°
27
69°
47°
28
72°
47°
29
75°
48°
30
77°
51°
31
78°
52°
1
79°
52°
2
78°
51°
3
79°
52°
4
77°
50°
5
77°
49°
6
76°
50°
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 63° to 85°, with overnight lows between 39° and 52°. The average high for May is 75° with an average low of 47°. 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.
