S
M
T
W
T
F
S
26
84°
57°
27
86°
57°
28
88°
53°
29
88°
58°
30
89°
56°
31
93°
59°
1
89°
56°
2
82°
54°
3
86°
58°
4
88°
57°
5
90°
58°
6
88°
59°
7
88°
59°
8
87°
58°
9
86°
59°
10
82°
56°
11
86°
58°
12
86°
60°
13
87°
60°
14
87°
59°
15
86°
59°
16
86°
58°
17
84°
54°
18
78°
50°
19
85°
57°
20
86°
58°
21
84°
56°
22
76°
54°
23
75°
51°
24
81°
55°
25
84°
58°
26
85°
58°
27
84°
57°
28
83°
54°
29
82°
55°
30
81°
56°
31
82°
57°
1
83°
57°
2
82°
56°
3
81°
56°
4
81°
54°
5
83°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Penticton
Penticton's August 2026 forecast shows daily high temperatures ranging from 75° to 93°, with overnight lows between 50° and 60°. The average high for August is 85° with an average low of 57°. 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 Penticton. See also: September | October | November.
