S
M
T
W
T
F
S
26
55°
39°
27
70°
36°
28
59°
41°
29
61°
50°
30
68°
39°
1
68°
34°
2
61°
43°
3
63°
37°
4
75°
39°
5
82°
46°
6
70°
57°
7
63°
43°
8
72°
37°
9
70°
52°
10
81°
46°
11
61°
43°
12
70°
36°
13
75°
54°
14
61°
52°
15
70°
48°
16
82°
43°
17
84°
55°
18
96°
64°
19
99°
65°
20
96°
58°
21
62°
53°
22
60°
53°
23
77°
61°
24
78°
55°
25
76°
57°
26
77°
55°
27
77°
56°
28
77°
54°
29
79°
54°
30
78°
54°
31
81°
68°
1
82°
61°
2
78°
62°
3
75°
62°
4
78°
61°
5
77°
59°
6
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Annapolis Junction
Annapolis Junction's May 2026 forecast shows daily high temperatures ranging from 60° to 99°, with overnight lows between 53° and 68°. The average high for May is 79° with an average low of 59°. 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 Annapolis Junction. See also: June | July | August.