S
M
T
W
T
F
S
29
60°
27°
30
43°
24°
31
35°
17°
1
53°
23°
2
43°
31°
3
46°
28°
4
54°
30°
5
36°
32°
6
49°
29°
7
65°
31°
8
45°
28°
9
52°
28°
10
67°
27°
11
72°
39°
12
57°
40°
13
58°
33°
14
61°
39°
15
57°
26°
16
34°
19°
17
37°
21°
18
52°
32°
19
63°
40°
20
66°
42°
21
69°
42°
22
60°
36°
23
50°
30°
24
62°
37°
25
63°
37°
26
63°
38°
27
66°
35°
28
50°
30°
29
53°
32°
30
59°
37°
1
52°
37°
2
51°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lewistown
Lewistown's April 2026 forecast shows daily high temperatures ranging from 34° to 69°, with overnight lows between 19° and 42°. The average high for April is 56° with an average low of 34°. 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 Lewistown. See also: May | June | July.
