S
M
T
W
T
F
S
29
68°
27°
30
53°
33°
31
57°
38°
1
48°
32°
2
46°
24°
3
60°
16°
4
70°
23°
5
71°
29°
6
71°
29°
7
70°
32°
8
68°
30°
9
67°
31°
10
60°
37°
11
53°
37°
12
52°
29°
13
52°
29°
14
59°
24°
15
53°
29°
16
45°
21°
17
58°
14°
18
64°
38°
19
64°
41°
20
59°
41°
21
54°
36°
22
44°
29°
23
59°
30°
24
63°
32°
25
64°
34°
26
61°
33°
27
62°
34°
28
64°
35°
29
68°
34°
30
66°
35°
1
62°
29°
2
56°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Fort Klamath
Fort Klamath's April 2026 forecast shows daily high temperatures ranging from 44° to 68°, with overnight lows between 29° and 41°. The average high for April is 61° 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 Fort Klamath. See also: May | June | July.