S
M
T
W
T
F
S
26
91°
63°
27
94°
63°
28
94°
62°
29
95°
64°
30
95°
64°
31
94°
63°
1
88°
59°
2
88°
60°
3
92°
62°
4
89°
60°
5
88°
60°
6
92°
61°
7
94°
61°
8
88°
61°
9
90°
62°
10
94°
61°
11
96°
61°
12
95°
57°
13
92°
57°
14
91°
58°
15
93°
57°
16
93°
60°
17
92°
62°
18
95°
61°
19
95°
61°
20
94°
58°
21
92°
54°
22
89°
53°
23
88°
53°
24
88°
58°
25
89°
55°
26
94°
58°
27
94°
59°
28
95°
60°
29
95°
60°
30
94°
59°
31
95°
58°
1
94°
56°
2
92°
55°
3
92°
57°
4
93°
59°
5
94°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Colusa
Colusa's August 2026 forecast shows daily high temperatures ranging from 88° to 96°, with overnight lows between 53° and 64°. The average high for August is 92° with an average low of 59°. 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 Colusa. See also: September | October | November.