S
M
T
W
T
F
S
26
54°
29°
27
57°
23°
28
63°
24°
29
67°
25°
30
71°
32°
1
76°
34°
2
73°
40°
3
76°
42°
4
71°
43°
5
76°
40°
6
78°
42°
7
78°
39°
8
76°
37°
9
76°
39°
10
81°
42°
11
82°
44°
12
75°
41°
13
75°
42°
14
71°
39°
15
80°
45°
16
68°
41°
17
71°
38°
18
61°
32°
19
62°
35°
20
70°
40°
21
73°
43°
22
72°
42°
23
69°
41°
24
73°
43°
25
73°
42°
26
72°
43°
27
74°
44°
28
74°
44°
29
73°
43°
30
74°
44°
31
75°
45°
1
75°
45°
2
76°
44°
3
76°
45°
4
75°
44°
5
75°
44°
6
74°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Klamath Falls
Klamath Falls's May 2026 forecast shows daily high temperatures ranging from 61° to 82°, with overnight lows between 32° and 45°. The average high for May is 74° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Klamath Falls. See also: June | July | August.
