S
M
T
W
T
F
S
26
86°
53°
27
87°
61°
28
89°
58°
29
85°
51°
30
88°
51°
31
89°
56°
1
90°
54°
2
76°
48°
3
81°
53°
4
89°
57°
5
95°
58°
6
97°
63°
7
99°
61°
8
92°
57°
9
88°
55°
10
90°
56°
11
89°
58°
12
88°
59°
13
89°
55°
14
85°
58°
15
86°
56°
16
87°
57°
17
84°
58°
18
85°
58°
19
86°
56°
20
82°
52°
21
76°
50°
22
75°
50°
23
75°
51°
24
74°
48°
25
74°
50°
26
82°
57°
27
83°
56°
28
79°
54°
29
76°
54°
30
72°
47°
31
73°
52°
1
71°
47°
2
70°
46°
3
71°
46°
4
71°
50°
5
70°
46°
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 70° to 99°, with overnight lows between 46° and 63°. The average high for August is 82° with an average low of 54°. 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.
