S
M
T
W
T
F
S
26
76°
54°
27
68°
56°
28
70°
59°
29
65°
49°
30
64°
38°
1
58°
40°
2
58°
36°
3
65°
34°
4
79°
52°
5
70°
48°
6
61°
42°
7
63°
36°
8
71°
48°
9
75°
54°
10
72°
52°
11
73°
43°
12
78°
42°
13
70°
50°
14
68°
39°
15
73°
43°
16
77°
61°
17
85°
64°
18
84°
68°
19
85°
65°
20
63°
53°
21
72°
55°
22
70°
64°
23
76°
62°
24
75°
62°
25
75°
61°
26
76°
62°
27
77°
63°
28
79°
64°
29
77°
63°
30
78°
64°
31
79°
62°
1
79°
63°
2
78°
58°
3
79°
63°
4
76°
62°
5
77°
63°
6
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Unionville
Unionville's May 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 53° and 64°. The average high for May is 76° with an average low of 61°. 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 Unionville. See also: June | July | August.
