S
M
T
W
T
F
S
26
78°
43°
27
80°
40°
28
80°
42°
29
79°
44°
30
81°
42°
31
81°
41°
1
77°
38°
2
75°
36°
3
74°
39°
4
74°
35°
5
73°
37°
6
Hist. Avg.
86°
42°
7
Hist. Avg.
86°
42°
8
Hist. Avg.
85°
42°
9
Hist. Avg.
85°
42°
10
Hist. Avg.
85°
42°
11
Hist. Avg.
85°
41°
12
Hist. Avg.
85°
41°
13
Hist. Avg.
85°
41°
14
Hist. Avg.
84°
41°
15
Hist. Avg.
84°
41°
16
Hist. Avg.
84°
40°
17
Hist. Avg.
84°
40°
18
Hist. Avg.
84°
40°
19
Hist. Avg.
83°
40°
20
Hist. Avg.
83°
40°
21
Hist. Avg.
83°
40°
22
Hist. Avg.
83°
39°
23
Hist. Avg.
82°
39°
24
Hist. Avg.
82°
39°
25
Hist. Avg.
82°
39°
26
Hist. Avg.
82°
38°
27
Hist. Avg.
82°
38°
28
Hist. Avg.
81°
38°
29
Hist. Avg.
81°
38°
30
Hist. Avg.
81°
38°
31
Hist. Avg.
81°
38°
1
Hist. Avg.
80°
37°
2
Hist. Avg.
80°
37°
3
Hist. Avg.
80°
37°
4
Hist. Avg.
80°
37°
5
Hist. Avg.
79°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Donner
Donner's August 2026 forecast shows daily high temperatures ranging from 73° to 81°, with overnight lows between 35° and 44°. The average high for August is 77° with an average low of 40°. 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 Donner. See also: September | October | November.