S
M
T
W
T
F
S
26
58°
43°
27
69°
39°
28
60°
43°
29
61°
51°
30
69°
44°
1
67°
37°
2
62°
43°
3
63°
40°
4
77°
42°
5
85°
59°
6
73°
60°
7
65°
49°
8
73°
40°
9
69°
55°
10
83°
48°
11
63°
46°
12
70°
42°
13
77°
55°
14
59°
46°
15
69°
45°
16
81°
59°
17
87°
61°
18
92°
64°
19
94°
67°
20
85°
59°
21
69°
54°
22
72°
52°
23
74°
53°
24
78°
55°
25
78°
58°
26
83°
58°
27
84°
56°
28
80°
59°
29
73°
60°
30
78°
60°
31
78°
57°
1
74°
55°
2
74°
54°
3
73°
54°
4
74°
55°
5
77°
62°
6
84°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Catonsville
Catonsville's May 2026 forecast shows daily high temperatures ranging from 59° to 94°, with overnight lows between 45° and 67°. The average high for May is 78° 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 Catonsville. See also: June | July | August.
