S
M
T
W
T
F
S
26
41°
25°
27
45°
27°
28
48°
27°
29
49°
26°
30
55°
20°
1
63°
23°
2
67°
26°
3
69°
29°
4
68°
36°
5
58°
31°
6
57°
24°
7
67°
42°
8
67°
31°
9
63°
31°
10
72°
31°
11
77°
38°
12
79°
36°
13
79°
46°
14
63°
33°
15
63°
38°
16
57°
32°
17
47°
31°
18
49°
25°
19
57°
16°
20
57°
29°
21
47°
27°
22
60°
25°
23
69°
35°
24
74°
46°
25
77°
40°
26
69°
43°
27
77°
41°
28
82°
45°
29
73°
38°
30
51°
43°
31
57°
40°
1
66°
31°
2
69°
35°
3
73°
39°
4
72°
43°
5
76°
38°
6
80°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Swan Valley
Swan Valley's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Swan Valley. See also: June | July | August.