S
M
T
W
T
F
S
26
84°
52°
27
87°
51°
28
92°
52°
29
92°
55°
30
91°
53°
31
92°
52°
1
89°
51°
2
93°
50°
3
92°
51°
4
86°
52°
5
82°
51°
6
84°
52°
7
87°
53°
8
89°
55°
9
85°
53°
10
83°
53°
11
81°
51°
12
83°
52°
13
83°
53°
14
82°
54°
15
78°
53°
16
78°
53°
17
78°
52°
18
79°
52°
19
78°
50°
20
78°
51°
21
82°
53°
22
81°
53°
23
79°
55°
24
83°
55°
25
82°
54°
26
83°
55°
27
82°
55°
28
83°
54°
29
81°
54°
30
80°
55°
31
82°
54°
1
81°
53°
2
82°
53°
3
84°
52°
4
79°
54°
5
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rohnert Park
Rohnert Park's August 2026 forecast shows daily high temperatures ranging from 78° to 93°, with overnight lows between 50° and 55°. The average high for August is 83° 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 Rohnert Park. See also: September | October | November.