S
M
T
W
T
F
S
26
82°
52°
27
87°
50°
28
89°
52°
29
86°
52°
30
89°
55°
31
90°
56°
1
91°
58°
2
91°
56°
3
90°
57°
4
90°
51°
5
86°
51°
6
85°
54°
7
83°
52°
8
82°
53°
9
83°
50°
10
82°
54°
11
81°
51°
12
80°
49°
13
Hist. Avg.
85°
50°
14
Hist. Avg.
85°
50°
15
Hist. Avg.
85°
50°
16
Hist. Avg.
85°
50°
17
Hist. Avg.
84°
50°
18
Hist. Avg.
84°
50°
19
Hist. Avg.
84°
50°
20
Hist. Avg.
84°
49°
21
Hist. Avg.
84°
49°
22
Hist. Avg.
84°
49°
23
Hist. Avg.
84°
49°
24
Hist. Avg.
84°
49°
25
Hist. Avg.
84°
48°
26
Hist. Avg.
83°
48°
27
Hist. Avg.
83°
48°
28
Hist. Avg.
83°
48°
29
Hist. Avg.
83°
48°
30
Hist. Avg.
83°
48°
31
Hist. Avg.
83°
48°
1
Hist. Avg.
82°
47°
2
Hist. Avg.
82°
47°
3
Hist. Avg.
82°
47°
4
Hist. Avg.
82°
47°
5
Hist. Avg.
82°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Mount Shasta
Mount Shasta's August 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 49° and 58°. The average high for August is 86° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mount Shasta. See also: September | October | November.
