S
M
T
W
T
F
S
26
56°
47°
27
69°
42°
28
69°
43°
29
69°
48°
30
74°
50°
1
69°
41°
2
62°
49°
3
65°
42°
4
80°
47°
5
86°
55°
6
73°
63°
7
70°
45°
8
72°
43°
9
78°
52°
10
86°
54°
11
64°
44°
12
73°
41°
13
79°
48°
14
66°
53°
15
75°
48°
16
87°
51°
17
92°
63°
18
96°
66°
19
98°
70°
20
99°
65°
21
71°
56°
22
68°
59°
23
78°
63°
24
78°
64°
25
79°
63°
26
79°
65°
27
82°
62°
28
79°
61°
29
79°
60°
30
80°
62°
31
82°
64°
1
85°
59°
2
80°
63°
3
78°
64°
4
80°
63°
5
80°
60°
6
81°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mechanicsville
Mechanicsville's May 2026 forecast shows daily high temperatures ranging from 68° to 99°, with overnight lows between 56° and 70°. The average high for May is 81° 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 Mechanicsville. See also: June | July | August.