S
M
T
W
T
F
S
26
49°
38°
27
44°
40°
28
51°
33°
29
52°
28°
30
50°
28°
1
51°
32°
2
64°
41°
3
63°
48°
4
56°
30°
5
47°
32°
6
45°
31°
7
55°
40°
8
64°
38°
9
60°
39°
10
59°
43°
11
62°
42°
12
60°
41°
13
62°
43°
14
67°
44°
15
60°
42°
16
61°
45°
17
61°
47°
18
68°
50°
19
72°
49°
20
71°
51°
21
65°
43°
22
60°
42°
23
60°
41°
24
63°
42°
25
64°
45°
26
65°
47°
27
64°
47°
28
63°
44°
29
67°
49°
30
66°
45°
31
66°
49°
1
65°
49°
2
66°
50°
3
66°
54°
4
67°
54°
5
68°
48°
6
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in West Union
West Union's May 2026 forecast shows daily high temperatures ranging from 45° to 72°, with overnight lows between 30° and 54°. The average high for May is 62° with an average low of 44°. 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 West Union. See also: June | July | August.