S
M
T
W
T
F
S
26
81°
61°
27
81°
61°
28
70°
57°
29
82°
63°
30
72°
57°
1
66°
52°
2
68°
52°
3
70°
43°
4
79°
43°
5
81°
50°
6
79°
64°
7
70°
57°
8
72°
48°
9
75°
55°
10
82°
57°
11
79°
57°
12
77°
59°
13
81°
55°
14
75°
55°
15
81°
45°
16
86°
52°
17
87°
64°
18
88°
65°
19
88°
64°
20
87°
65°
21
86°
66°
22
80°
64°
23
82°
66°
24
82°
64°
25
84°
66°
26
84°
63°
27
83°
62°
28
80°
62°
29
82°
63°
30
81°
59°
31
85°
62°
1
86°
63°
2
87°
64°
3
86°
63°
4
82°
62°
5
82°
60°
6
83°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Folsom
Folsom's May 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 59° and 66°. The average high for May is 84° with an average low of 63°. 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 Folsom. See also: June | July | August.