S
M
T
W
T
F
S
29
75°
30°
30
71°
32°
31
60°
41°
1
52°
36°
2
49°
23°
3
50°
27°
4
59°
35°
5
65°
40°
6
68°
41°
7
73°
40°
8
72°
41°
9
62°
40°
10
52°
36°
11
51°
35°
12
49°
32°
13
54°
37°
14
58°
39°
15
60°
42°
16
64°
35°
17
70°
43°
18
70°
42°
19
69°
42°
20
69°
41°
21
67°
41°
22
61°
36°
23
58°
32°
24
59°
36°
25
65°
42°
26
71°
43°
27
71°
43°
28
67°
42°
29
72°
44°
30
73°
45°
1
74°
46°
2
75°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Garrison
Garrison's April 2026 forecast shows daily high temperatures ranging from 49° to 75°, with overnight lows between 27° and 46°. The average high for April is 64° with an average low of 39°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Garrison. See also: May | June | July.