S
M
T
W
T
F
S
30
92°
58°
31
90°
56°
1
91°
56°
2
89°
55°
3
89°
55°
4
88°
56°
5
87°
53°
6
87°
56°
7
88°
56°
8
88°
57°
9
89°
55°
10
88°
55°
11
87°
56°
12
87°
61°
13
89°
62°
14
93°
61°
15
94°
61°
16
93°
60°
17
91°
62°
18
92°
63°
19
93°
63°
20
94°
62°
21
91°
59°
22
90°
58°
23
90°
57°
24
88°
58°
25
90°
61°
26
87°
55°
27
84°
58°
28
Hist. Avg.
86°
57°
29
Hist. Avg.
86°
57°
30
Hist. Avg.
85°
57°
1
Hist. Avg.
85°
56°
2
Hist. Avg.
85°
56°
3
Hist. Avg.
84°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Folsom
Folsom's September 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 53° and 63°. The average high for September is 90° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Folsom. See also: October | November | December.
