S
M
T
W
T
F
S
26
66°
28°
27
69°
33°
28
69°
36°
29
75°
41°
30
77°
43°
1
79°
39°
2
83°
48°
3
86°
47°
4
86°
48°
5
84°
53°
6
85°
47°
7
82°
52°
8
78°
50°
9
77°
46°
10
78°
46°
11
77°
43°
12
83°
46°
13
68°
52°
14
68°
43°
15
60°
36°
16
58°
35°
17
71°
37°
18
72°
39°
19
73°
39°
20
77°
47°
21
77°
43°
22
82°
48°
23
87°
53°
24
85°
51°
25
81°
52°
26
66°
50°
27
84°
56°
28
89°
59°
29
86°
54°
30
76°
49°
31
74°
47°
1
78°
53°
2
86°
55°
3
85°
55°
4
85°
54°
5
87°
54°
6
78°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tonasket
Tonasket's May 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 47° and 59°. The average high for May is 81° with an average low of 53°. 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 Tonasket. See also: June | July | August.
