S
M
T
W
T
F
S
29
56°
26°
30
44°
33°
31
46°
33°
1
53°
34°
2
42°
31°
3
53°
27°
4
63°
26°
5
69°
29°
6
70°
34°
7
64°
34°
8
61°
25°
9
69°
35°
10
66°
40°
11
65°
37°
12
55°
37°
13
51°
29°
14
57°
33°
15
54°
32°
16
56°
34°
17
58°
33°
18
55°
33°
19
59°
31°
20
59°
34°
21
57°
31°
22
60°
32°
23
52°
27°
24
51°
26°
25
51°
27°
26
52°
26°
27
54°
30°
28
52°
28°
29
53°
27°
30
54°
29°
1
54°
27°
2
57°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lostine
Lostine's April 2026 forecast shows daily high temperatures ranging from 51° to 69°, with overnight lows between 26° and 40°. The average high for April is 56° with an average low of 31°. 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 Lostine. See also: May | June | July.