S
M
T
W
T
F
S
26
85°
65°
27
88°
70°
28
85°
69°
29
86°
70°
30
82°
72°
31
89°
72°
1
90°
73°
2
91°
76°
3
89°
73°
4
90°
70°
5
85°
73°
6
93°
78°
7
94°
76°
8
91°
74°
9
93°
75°
10
91°
75°
11
88°
73°
12
90°
76°
13
90°
75°
14
90°
77°
15
90°
71°
16
80°
68°
17
89°
70°
18
88°
76°
19
90°
73°
20
85°
68°
21
84°
65°
22
80°
70°
23
84°
66°
24
83°
65°
25
80°
65°
26
86°
66°
27
86°
68°
28
82°
68°
29
86°
67°
30
85°
71°
31
91°
73°
1
90°
74°
2
93°
72°
3
86°
70°
4
86°
69°
5
85°
67°
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 82° to 93°, with overnight lows between 67° and 74°. The average high for August is 87° with an average low of 70°. 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.