S
M
T
W
T
F
S
26
51°
27°
27
42°
27°
28
55°
29°
29
56°
34°
30
61°
30°
1
66°
31°
2
71°
39°
3
75°
39°
4
56°
30°
5
47°
27°
6
59°
21°
7
69°
40°
8
74°
42°
9
66°
44°
10
76°
47°
11
81°
48°
12
74°
41°
13
92°
49°
14
76°
46°
15
72°
47°
16
77°
40°
17
56°
38°
18
45°
29°
19
64°
38°
20
69°
45°
21
56°
39°
22
67°
44°
23
78°
51°
24
77°
51°
25
82°
55°
26
72°
48°
27
81°
54°
28
76°
53°
29
80°
56°
30
73°
51°
31
70°
47°
1
66°
52°
2
67°
51°
3
68°
52°
4
75°
53°
5
70°
53°
6
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Colstrip
Colstrip's May 2026 forecast shows daily high temperatures ranging from 45° to 82°, with overnight lows between 29° and 56°. The average high for May is 70° 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 Colstrip. See also: June | July | August.
