S
M
T
W
T
F
S
29
73°
40°
30
56°
40°
31
58°
46°
1
55°
35°
2
50°
35°
3
64°
33°
4
78°
46°
5
76°
50°
6
74°
52°
7
70°
49°
8
73°
46°
9
70°
45°
10
64°
44°
11
54°
40°
12
54°
37°
13
61°
31°
14
68°
35°
15
70°
39°
16
69°
38°
17
64°
40°
18
64°
39°
19
64°
38°
20
67°
37°
21
66°
34°
22
58°
33°
23
60°
30°
24
60°
31°
25
59°
32°
26
59°
32°
27
60°
31°
28
60°
31°
29
61°
32°
30
61°
32°
1
62°
34°
2
63°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Klamath River
Klamath River's April 2026 forecast shows daily high temperatures ranging from 54° to 73°, with overnight lows between 30° and 46°. The average high for April is 63° with an average low of 36°. 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 Klamath River. See also: May | June | July.