S
M
T
W
T
F
S
29
51°
26°
30
59°
39°
31
40°
30°
1
33°
23°
2
38°
25°
3
50°
31°
4
41°
31°
5
36°
24°
6
40°
18°
7
32°
13°
8
50°
22°
9
52°
34°
10
40°
26°
11
54°
20°
12
59°
36°
13
59°
48°
14
71°
44°
15
67°
53°
16
64°
40°
17
72°
37°
18
63°
33°
19
34°
23°
20
44°
17°
21
68°
31°
22
67°
37°
23
68°
44°
24
64°
40°
25
52°
36°
26
61°
40°
27
59°
41°
28
50°
38°
29
52°
37°
30
51°
34°
1
50°
35°
2
50°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lewiston
Lewiston's April 2026 forecast shows daily high temperatures ranging from 50° to 68°, with overnight lows between 31° and 44°. The average high for April is 58° with an average low of 37°. 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 Lewiston. See also: May | June | July.
