S
M
T
W
T
F
S
26
87°
68°
27
88°
74°
28
92°
76°
29
83°
64°
30
77°
61°
1
66°
53°
2
75°
50°
3
79°
50°
4
81°
59°
5
86°
67°
6
83°
59°
7
69°
62°
8
77°
64°
9
82°
65°
10
88°
64°
11
80°
62°
12
83°
66°
13
84°
68°
14
82°
71°
15
82°
70°
16
84°
70°
17
83°
69°
18
86°
70°
19
85°
67°
20
84°
70°
21
86°
69°
22
86°
70°
23
84°
70°
24
81°
69°
25
81°
69°
26
82°
68°
27
81°
69°
28
82°
69°
29
83°
67°
30
83°
67°
31
84°
68°
1
84°
68°
2
85°
69°
3
85°
69°
4
84°
70°
5
86°
72°
6
87°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Smithson Valley
Smithson Valley's May 2026 forecast shows daily high temperatures ranging from 69° to 88°, with overnight lows between 59° and 73°. The average high for May is 83° with an average low of 68°. 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 Smithson Valley. See also: June | July | August.
