S
M
T
W
T
F
S
26
57°
42°
27
72°
37°
28
60°
49°
29
60°
54°
30
67°
44°
1
67°
35°
2
60°
42°
3
63°
38°
4
77°
37°
5
85°
50°
6
68°
52°
7
68°
42°
8
67°
51°
9
70°
48°
10
79°
50°
11
64°
45°
12
65°
47°
13
66°
49°
14
68°
51°
15
76°
56°
16
74°
55°
17
71°
55°
18
75°
57°
19
79°
56°
20
73°
53°
21
72°
52°
22
70°
53°
23
71°
54°
24
72°
53°
25
74°
55°
26
77°
60°
27
77°
57°
28
78°
58°
29
79°
55°
30
81°
62°
31
83°
63°
1
78°
63°
2
83°
61°
3
83°
63°
4
85°
64°
5
85°
64°
6
84°
63°
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 64° to 85°, with overnight lows between 42° and 64°. The average high for May is 75° with an average low of 55°. 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.
