S
M
T
W
T
F
S
26
67°
56°
27
68°
53°
28
68°
53°
29
65°
52°
30
66°
54°
1
66°
52°
2
67°
51°
3
66°
52°
4
66°
50°
5
65°
50°
6
67°
51°
7
68°
56°
8
77°
56°
9
71°
58°
10
69°
54°
11
69°
52°
12
66°
51°
13
66°
52°
14
68°
53°
15
68°
54°
16
69°
53°
17
70°
59°
18
77°
57°
19
71°
54°
20
71°
55°
21
72°
61°
22
72°
62°
23
73°
64°
24
81°
65°
25
82°
66°
26
82°
66°
27
83°
67°
28
83°
67°
29
84°
65°
30
85°
66°
31
84°
62°
1
77°
60°
2
75°
64°
3
77°
67°
4
78°
67°
5
78°
68°
6
82°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Baltimore
Baltimore's May 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 50° and 68°. The average high for May is 73° with an average low of 58°. 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 Baltimore. See also: June | July | August.