S
M
T
W
T
F
S
26
58°
15°
27
49°
28°
28
51°
22°
29
52°
28°
30
52°
28°
1
66°
23°
2
71°
36°
3
76°
31°
4
50°
34°
5
44°
25°
6
52°
22°
7
63°
20°
8
72°
34°
9
61°
31°
10
63°
25°
11
84°
44°
12
75°
41°
13
82°
36°
14
75°
57°
15
71°
47°
16
60°
36°
17
47°
39°
18
43°
36°
19
57°
38°
20
72°
35°
21
72°
46°
22
59°
47°
23
69°
43°
24
82°
51°
25
92°
56°
26
91°
59°
27
87°
58°
28
85°
59°
29
83°
58°
30
80°
58°
31
77°
53°
1
80°
56°
2
76°
54°
3
79°
55°
4
79°
54°
5
72°
52°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Garrison
Garrison's May 2026 forecast shows daily high temperatures ranging from 69° to 92°, with overnight lows between 43° and 59°. The average high for May is 80° with an average low of 55°. 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 Garrison. See also: June | July | August.
