S
M
T
W
T
F
S
26
72°
54°
27
64°
48°
28
55°
45°
29
63°
39°
30
59°
37°
1
61°
34°
2
64°
32°
3
75°
48°
4
84°
48°
5
61°
48°
6
61°
41°
7
73°
41°
8
75°
50°
9
81°
45°
10
73°
43°
11
81°
48°
12
84°
59°
13
79°
45°
14
82°
57°
15
93°
61°
16
89°
66°
17
89°
70°
18
90°
47°
19
68°
44°
20
70°
49°
21
72°
50°
22
77°
58°
23
78°
59°
24
76°
58°
25
75°
59°
26
79°
62°
27
79°
60°
28
76°
56°
29
79°
56°
30
72°
55°
31
73°
57°
1
72°
53°
2
73°
58°
3
73°
63°
4
82°
64°
5
82°
65°
6
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tarkio
Tarkio's May 2026 forecast shows daily high temperatures ranging from 68° to 93°, with overnight lows between 44° and 70°. The average high for May is 78° with an average low of 58°. 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 Tarkio. See also: June | July | August.
