S
M
T
W
T
F
S
26
70°
42°
27
58°
42°
28
61°
49°
29
72°
46°
30
77°
48°
1
79°
47°
2
83°
53°
3
85°
55°
4
84°
57°
5
72°
48°
6
59°
50°
7
68°
53°
8
61°
53°
9
72°
45°
10
69°
45°
11
75°
46°
12
82°
53°
13
65°
53°
14
54°
44°
15
47°
41°
16
49°
39°
17
57°
39°
18
61°
40°
19
66°
43°
20
69°
46°
21
74°
47°
22
64°
45°
23
67°
43°
24
66°
45°
25
67°
46°
26
66°
43°
27
65°
45°
28
59°
44°
29
60°
41°
30
60°
39°
31
65°
44°
1
66°
46°
2
60°
44°
3
60°
41°
4
61°
41°
5
60°
43°
6
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Glacier
Glacier's May 2026 forecast shows daily high temperatures ranging from 47° to 74°, with overnight lows between 39° and 47°. The average high for May is 62° with an average low of 43°. 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 Glacier. See also: June | July | August.
