S
M
T
W
T
F
S
26
63°
35°
27
57°
31°
28
58°
31°
29
62°
33°
30
66°
39°
1
60°
41°
2
60°
38°
3
59°
32°
4
66°
36°
5
69°
38°
6
69°
42°
7
60°
37°
8
63°
41°
9
64°
39°
10
70°
40°
11
61°
34°
12
59°
35°
13
60°
33°
14
63°
34°
15
63°
40°
16
62°
37°
17
61°
41°
18
62°
36°
19
65°
36°
20
72°
42°
21
74°
45°
22
74°
46°
23
73°
41°
24
63°
36°
25
66°
41°
26
66°
43°
27
71°
44°
28
68°
42°
29
75°
46°
30
76°
45°
31
77°
47°
1
77°
45°
2
75°
46°
3
77°
49°
4
79°
50°
5
77°
48°
6
71°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Thompson Falls
Thompson Falls's May 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 31° and 50°. The average high for May is 67° with an average low of 40°. 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 Thompson Falls. See also: June | July | August.
