S
M
T
W
T
F
S
26
68°
49°
27
68°
45°
28
70°
52°
29
74°
53°
30
77°
52°
1
70°
50°
2
71°
50°
3
69°
54°
4
79°
52°
5
70°
46°
6
68°
46°
7
70°
47°
8
73°
51°
9
74°
48°
10
70°
47°
11
70°
48°
12
71°
51°
13
80°
58°
14
82°
59°
15
82°
59°
16
83°
58°
17
80°
58°
18
74°
55°
19
75°
55°
20
79°
59°
21
81°
54°
22
76°
53°
23
74°
54°
24
75°
53°
25
78°
56°
26
79°
61°
27
83°
62°
28
84°
58°
29
85°
58°
30
76°
61°
31
79°
62°
1
85°
57°
2
83°
55°
3
79°
54°
4
78°
55°
5
78°
59°
6
80°
61°
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 85°, with overnight lows between 45° and 62°. The average high for May is 76° with an average low of 54°. 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.