S
M
T
W
T
F
S
26
65°
45°
27
68°
51°
28
69°
55°
29
72°
52°
30
69°
52°
1
66°
49°
2
68°
50°
3
69°
49°
4
70°
50°
5
71°
55°
6
69°
52°
7
68°
50°
8
73°
55°
9
70°
56°
10
77°
57°
11
78°
56°
12
78°
56°
13
73°
58°
14
80°
57°
15
76°
56°
16
75°
57°
17
74°
58°
18
79°
59°
19
80°
58°
20
80°
51°
21
71°
52°
22
72°
57°
23
72°
55°
24
75°
58°
25
81°
61°
26
83°
61°
27
81°
60°
28
77°
62°
29
79°
62°
30
75°
63°
31
82°
64°
1
84°
63°
2
84°
61°
3
83°
62°
4
84°
63°
5
81°
62°
6
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Colonial Beach
Colonial Beach's May 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 45° and 64°. The average high for May is 75° with an average low of 57°. 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 Colonial Beach. See also: June | July | August.