S
M
T
W
T
F
S
29
48°
32°
30
45°
22°
31
49°
18°
1
54°
27°
2
42°
35°
3
49°
29°
4
58°
22°
5
63°
27°
6
67°
42°
7
62°
37°
8
57°
20°
9
62°
33°
10
68°
42°
11
59°
41°
12
62°
41°
13
55°
39°
14
53°
39°
15
49°
34°
16
52°
34°
17
56°
38°
18
59°
38°
19
58°
35°
20
56°
39°
21
60°
38°
22
59°
34°
23
52°
30°
24
50°
28°
25
51°
30°
26
52°
30°
27
52°
31°
28
53°
32°
29
53°
30°
30
55°
32°
1
56°
33°
2
56°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Big Arm
Big Arm's April 2026 forecast shows daily high temperatures ranging from 49° to 68°, with overnight lows between 28° and 42°. The average high for April is 56° with an average low of 35°. 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 Big Arm. See also: May | June | July.