S
M
T
W
T
F
S
26
71°
45°
27
56°
45°
28
60°
47°
29
71°
43°
30
81°
51°
1
74°
54°
2
72°
50°
3
91°
57°
4
74°
54°
5
63°
54°
6
67°
54°
7
71°
51°
8
69°
51°
9
78°
51°
10
69°
54°
11
81°
51°
12
82°
59°
13
64°
52°
14
62°
50°
15
56°
47°
16
56°
44°
17
64°
42°
18
72°
44°
19
69°
47°
20
73°
48°
21
83°
50°
22
78°
48°
23
78°
48°
24
72°
47°
25
67°
44°
26
68°
48°
27
71°
46°
28
66°
46°
29
68°
47°
30
71°
48°
31
75°
47°
1
74°
50°
2
77°
52°
3
76°
50°
4
74°
48°
5
69°
46°
6
75°
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 66° to 83°, with overnight lows between 44° and 52°. The average high for May is 73° 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 West Union. See also: June | July | August.