S
M
T
W
T
F
S
26
58°
41°
27
69°
41°
28
61°
43°
29
63°
52°
30
70°
46°
1
64°
43°
2
63°
43°
3
63°
41°
4
73°
47°
5
80°
58°
6
70°
53°
7
65°
47°
8
66°
55°
9
63°
49°
10
75°
59°
11
64°
46°
12
65°
50°
13
69°
55°
14
75°
57°
15
77°
58°
16
72°
54°
17
69°
53°
18
72°
54°
19
77°
55°
20
70°
51°
21
69°
52°
22
68°
52°
23
69°
53°
24
70°
52°
25
72°
56°
26
75°
58°
27
73°
57°
28
75°
57°
29
74°
54°
30
77°
61°
31
81°
62°
1
76°
62°
2
80°
61°
3
79°
62°
4
82°
63°
5
82°
63°
6
81°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Old Baltimore
Old Baltimore's May 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 46° and 64°. The average high for May is 73° with an average low of 56°. 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 Old Baltimore. See also: June | July | August.