S
M
T
W
T
F
S
26
81°
57°
27
86°
61°
28
65°
49°
29
63°
46°
30
68°
38°
1
64°
41°
2
63°
41°
3
80°
37°
4
83°
61°
5
65°
43°
6
63°
39°
7
69°
37°
8
77°
45°
9
82°
50°
10
72°
47°
11
76°
42°
12
80°
51°
13
77°
48°
14
77°
42°
15
83°
59°
16
86°
70°
17
85°
64°
18
81°
67°
19
N/A
20
59°
55°
21
67°
57°
22
67°
58°
23
77°
61°
24
74°
60°
25
77°
60°
26
78°
62°
27
80°
64°
28
79°
64°
29
81°
63°
30
82°
65°
31
80°
65°
1
79°
64°
2
80°
59°
3
80°
64°
4
79°
63°
5
81°
63°
6
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Union Township
Union Township's May 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 55° and 65°. The average high for May is 77° with an average low of 62°. 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.