S
M
T
W
T
F
S
26
58°
47°
27
68°
42°
28
65°
51°
29
64°
54°
30
72°
49°
1
68°
42°
2
62°
49°
3
64°
42°
4
77°
46°
5
84°
62°
6
72°
59°
7
60°
50°
8
72°
44°
9
75°
58°
10
80°
53°
11
64°
48°
12
70°
44°
13
74°
58°
14
65°
54°
15
73°
49°
16
85°
50°
17
83°
62°
18
92°
65°
19
97°
73°
20
95°
66°
21
72°
58°
22
62°
52°
23
63°
58°
24
75°
60°
25
78°
64°
26
79°
66°
27
80°
62°
28
81°
63°
29
78°
60°
30
79°
61°
31
84°
64°
1
87°
59°
2
79°
63°
3
76°
64°
4
79°
63°
5
78°
60°
6
79°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dahlgren
Dahlgren's May 2026 forecast shows daily high temperatures ranging from 62° to 97°, with overnight lows between 52° and 73°. The average high for May is 79° 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 Dahlgren. See also: June | July | August.