S
M
T
W
T
F
S
26
86°
58°
27
87°
63°
28
77°
65°
29
81°
61°
30
70°
56°
1
70°
51°
2
69°
45°
3
72°
49°
4
79°
55°
5
79°
62°
6
68°
47°
7
71°
44°
8
72°
49°
9
74°
51°
10
74°
55°
11
78°
57°
12
80°
55°
13
80°
53°
14
78°
54°
15
78°
59°
16
80°
59°
17
80°
58°
18
81°
59°
19
80°
60°
20
82°
60°
21
82°
59°
22
81°
61°
23
78°
61°
24
77°
60°
25
80°
61°
26
81°
62°
27
78°
60°
28
77°
58°
29
81°
60°
30
79°
56°
31
80°
62°
1
82°
62°
2
85°
63°
3
85°
63°
4
84°
62°
5
79°
61°
6
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Smithsonia
Smithsonia's May 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 44° and 63°. 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 Smithsonia. See also: June | July | August.
