S
M
T
W
T
F
S
26
54°
39°
27
43°
34°
28
46°
36°
29
41°
34°
30
39°
23°
1
52°
19°
2
63°
19°
3
64°
28°
4
59°
34°
5
37°
28°
6
39°
27°
7
48°
25°
8
59°
19°
9
46°
28°
10
39°
30°
11
57°
21°
12
50°
36°
13
64°
34°
14
73°
28°
15
79°
55°
16
55°
28°
17
61°
27°
18
52°
41°
19
N/A
20
56°
38°
21
64°
37°
22
66°
44°
23
57°
44°
24
71°
46°
25
78°
51°
26
80°
55°
27
77°
54°
28
73°
51°
29
75°
51°
30
73°
52°
31
77°
53°
1
79°
54°
2
69°
45°
3
73°
52°
4
71°
50°
5
63°
48°
6
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Kettle Falls
Kettle Falls's May 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 37° and 55°. The average high for May is 70° with an average low of 48°. 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 Kettle Falls. See also: June | July | August.