S
M
T
W
T
F
S
30
96°
57°
31
90°
57°
1
72°
57°
2
62°
56°
3
64°
50°
4
72°
53°
5
77°
54°
6
74°
56°
7
80°
58°
8
86°
60°
9
88°
61°
10
85°
62°
11
83°
59°
12
82°
58°
13
82°
60°
14
84°
60°
15
102°
64°
16
87°
61°
17
86°
58°
18
85°
55°
19
85°
57°
20
89°
62°
21
91°
62°
22
92°
61°
23
85°
60°
24
83°
54°
25
84°
57°
26
90°
60°
27
91°
61°
28
91°
62°
29
90°
61°
30
89°
60°
1
90°
61°
2
90°
61°
3
88°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shasta
Shasta's September 2026 forecast shows daily high temperatures ranging from 62° to 102°, with overnight lows between 50° and 64°. The average high for September is 85° with an average low of 59°. 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 Shasta. See also: October | November | December.
