S
M
T
W
T
F
S
26
71°
52°
27
69°
49°
28
67°
52°
29
69°
51°
30
73°
50°
1
66°
50°
2
68°
47°
3
64°
51°
4
74°
52°
5
66°
47°
6
63°
47°
7
65°
49°
8
71°
48°
9
67°
47°
10
65°
48°
11
65°
48°
12
66°
51°
13
76°
58°
14
78°
59°
15
78°
60°
16
79°
59°
17
76°
58°
18
72°
56°
19
72°
55°
20
77°
59°
21
76°
54°
22
69°
52°
23
69°
54°
24
71°
52°
25
72°
56°
26
74°
61°
27
79°
62°
28
81°
56°
29
80°
55°
30
71°
58°
31
73°
62°
1
81°
56°
2
77°
55°
3
74°
54°
4
73°
55°
5
74°
60°
6
76°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Timonium
Timonium's May 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 47° and 63°. The average high for May is 72° 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 Timonium. See also: June | July | August.