S
M
T
W
T
F
S
30
87°
68°
31
85°
61°
1
83°
60°
2
79°
62°
3
80°
61°
4
80°
61°
5
79°
62°
6
78°
60°
7
78°
60°
8
79°
63°
9
78°
60°
10
77°
60°
11
78°
61°
12
80°
59°
13
79°
60°
14
77°
59°
15
76°
61°
16
77°
57°
17
76°
58°
18
75°
58°
19
75°
63°
20
75°
63°
21
Hist. Avg.
77°
59°
22
Hist. Avg.
77°
59°
23
Hist. Avg.
76°
58°
24
Hist. Avg.
76°
58°
25
Hist. Avg.
76°
58°
26
Hist. Avg.
75°
57°
27
Hist. Avg.
75°
57°
28
Hist. Avg.
74°
56°
29
Hist. Avg.
74°
56°
30
Hist. Avg.
74°
56°
1
Hist. Avg.
73°
55°
2
Hist. Avg.
73°
55°
3
Hist. Avg.
72°
54°
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 75° to 87°, with overnight lows between 57° and 68°. The average high for September is 79° with an average low of 61°. 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.
