S
M
T
W
T
F
S
27
91°
63°
28
84°
61°
29
83°
63°
30
86°
60°
1
82°
54°
2
79°
53°
3
79°
55°
4
78°
55°
5
77°
53°
6
77°
53°
7
79°
54°
8
78°
53°
9
79°
54°
10
77°
53°
11
77°
51°
12
75°
51°
13
73°
52°
14
73°
50°
15
74°
49°
16
73°
51°
17
74°
56°
18
79°
53°
19
79°
56°
20
76°
57°
21
76°
56°
22
75°
58°
23
79°
57°
24
79°
56°
25
78°
57°
26
77°
58°
27
68°
57°
28
75°
56°
29
69°
55°
30
67°
52°
31
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Shasta Lake
Shasta Lake's October 2026 forecast shows daily high temperatures ranging from 67° to 91°, with overnight lows between 47° and 63°. The average high for October is 77° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Shasta Lake. See also: November | December | January.