S
M
T
W
T
F
S
26
89°
71°
27
90°
73°
28
89°
73°
29
85°
72°
30
86°
72°
31
89°
73°
1
90°
72°
2
90°
73°
3
89°
71°
4
90°
72°
5
89°
72°
6
84°
71°
7
87°
66°
8
84°
67°
9
84°
66°
10
85°
66°
11
84°
71°
12
88°
71°
13
89°
70°
14
89°
65°
15
84°
65°
16
83°
70°
17
84°
71°
18
85°
65°
19
85°
65°
20
83°
66°
21
85°
65°
22
86°
64°
23
86°
64°
24
85°
63°
25
84°
64°
26
85°
68°
27
87°
69°
28
86°
68°
29
87°
70°
30
87°
68°
31
85°
61°
1
83°
60°
2
79°
62°
3
80°
61°
4
80°
61°
5
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Folsom
Folsom's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 60° and 73°. The average high for August is 86° 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 August weather will actually feel in Folsom. See also: September | October | November.