S
M
T
W
T
F
S
30
89°
56°
31
91°
57°
1
92°
59°
2
89°
56°
3
87°
56°
4
87°
55°
5
88°
56°
6
88°
55°
7
89°
54°
8
87°
55°
9
86°
56°
10
86°
60°
11
87°
56°
12
86°
60°
13
88°
62°
14
92°
62°
15
92°
61°
16
93°
58°
17
92°
57°
18
92°
57°
19
91°
56°
20
89°
58°
21
92°
59°
22
92°
59°
23
91°
58°
24
84°
58°
25
81°
55°
26
79°
54°
27
80°
55°
28
81°
56°
29
82°
57°
30
81°
57°
1
80°
54°
2
80°
53°
3
85°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Diamond Springs
Diamond Springs's September 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 53° and 62°. The average high for September is 87° with an average low of 57°. 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 Diamond Springs. See also: October | November | December.
