S
M
T
W
T
F
S
26
80°
50°
27
82°
59°
28
68°
55°
29
64°
48°
30
66°
39°
1
63°
41°
2
60°
36°
3
74°
54°
4
79°
59°
5
65°
46°
6
58°
41°
7
59°
43°
8
70°
52°
9
68°
50°
10
71°
53°
11
71°
56°
12
72°
54°
13
68°
54°
14
73°
53°
15
72°
58°
16
69°
57°
17
74°
59°
18
76°
60°
19
74°
60°
20
76°
59°
21
77°
60°
22
75°
57°
23
71°
54°
24
71°
57°
25
75°
61°
26
73°
58°
27
71°
56°
28
72°
55°
29
71°
53°
30
74°
62°
31
80°
62°
1
76°
63°
2
81°
64°
3
81°
62°
4
74°
57°
5
74°
56°
6
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Union Township
Union Township's May 2026 forecast shows daily high temperatures ranging from 58° to 81°, with overnight lows between 36° and 64°. The average high for May is 72° with an average low of 55°. 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 Union Township. See also: June | July | August.