S
M
T
W
T
F
S
29
77°
39°
30
70°
41°
31
55°
45°
1
62°
46°
2
66°
44°
3
75°
28°
4
79°
34°
5
79°
37°
6
81°
39°
7
76°
43°
8
73°
49°
9
68°
49°
10
65°
47°
11
56°
40°
12
56°
36°
13
61°
38°
14
64°
39°
15
59°
42°
16
62°
40°
17
57°
39°
18
59°
38°
19
61°
39°
20
69°
38°
21
65°
35°
22
66°
39°
23
64°
40°
24
64°
42°
25
65°
39°
26
68°
39°
27
73°
42°
28
74°
44°
29
74°
43°
30
75°
44°
1
75°
45°
2
71°
44°
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 56° to 76°, with overnight lows between 35° and 49°. The average high for April is 66° with an average low of 41°. 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.
