S
M
T
W
T
F
S
26
94°
70°
27
98°
68°
28
100°
70°
29
97°
70°
30
100°
73°
31
101°
74°
1
102°
76°
2
103°
74°
3
102°
74°
4
101°
69°
5
98°
69°
6
97°
72°
7
94°
70°
8
95°
71°
9
95°
68°
10
94°
72°
11
93°
69°
12
91°
67°
13
Hist. Avg.
98°
64°
14
Hist. Avg.
98°
64°
15
Hist. Avg.
98°
64°
16
Hist. Avg.
98°
64°
17
Hist. Avg.
98°
64°
18
Hist. Avg.
98°
64°
19
Hist. Avg.
98°
63°
20
Hist. Avg.
98°
63°
21
Hist. Avg.
97°
63°
22
Hist. Avg.
97°
63°
23
Hist. Avg.
97°
63°
24
Hist. Avg.
97°
62°
25
Hist. Avg.
97°
62°
26
Hist. Avg.
97°
62°
27
Hist. Avg.
97°
62°
28
Hist. Avg.
96°
62°
29
Hist. Avg.
96°
62°
30
Hist. Avg.
96°
61°
31
Hist. Avg.
96°
61°
1
Hist. Avg.
96°
61°
2
Hist. Avg.
96°
61°
3
Hist. Avg.
96°
61°
4
Hist. Avg.
95°
60°
5
Hist. Avg.
95°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Shasta Lake
Shasta Lake's August 2026 forecast shows daily high temperatures ranging from 91° to 103°, with overnight lows between 67° and 76°. The average high for August is 98° with an average low of 71°. 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 Shasta Lake. See also: September | October | November.
