S
M
T
W
T
F
S
26
59°
41°
27
70°
36°
28
61°
38°
29
63°
48°
30
64°
48°
1
64°
38°
2
60°
45°
3
61°
41°
4
73°
37°
5
82°
51°
6
69°
52°
7
65°
50°
8
66°
41°
9
60°
48°
10
74°
49°
11
62°
45°
12
67°
36°
13
73°
53°
14
63°
50°
15
66°
48°
16
81°
43°
17
87°
60°
18
93°
61°
19
94°
70°
20
90°
63°
21
63°
54°
22
67°
54°
23
53°
48°
24
60°
50°
25
75°
56°
26
81°
54°
27
82°
65°
28
77°
55°
29
76°
54°
30
68°
42°
31
75°
50°
1
76°
49°
2
76°
52°
3
77°
53°
4
83°
56°
5
85°
64°
6
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Frederick
Frederick's May 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 42° and 65°. The average high for May is 78° 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 Frederick. See also: June | July | August.
