S
M
T
W
T
F
S
26
69°
30°
27
70°
32°
28
67°
37°
29
72°
41°
30
76°
39°
1
79°
37°
2
84°
53°
3
86°
45°
4
89°
47°
5
86°
53°
6
89°
47°
7
79°
50°
8
77°
44°
9
77°
40°
10
80°
42°
11
77°
45°
12
84°
42°
13
70°
49°
14
65°
45°
15
63°
36°
16
65°
39°
17
70°
40°
18
72°
44°
19
74°
44°
20
78°
48°
21
82°
50°
22
83°
48°
23
81°
48°
24
82°
49°
25
73°
46°
26
74°
47°
27
74°
49°
28
72°
47°
29
84°
53°
30
72°
43°
31
74°
44°
1
80°
52°
2
83°
53°
3
83°
53°
4
82°
52°
5
80°
49°
6
82°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ahtanum
Ahtanum's May 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 39° and 53°. The average high for May is 77° 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 Ahtanum. See also: June | July | August.
