S
M
T
W
T
F
S
26
90°
59°
27
89°
55°
28
88°
53°
29
82°
54°
30
80°
55°
31
80°
51°
1
79°
52°
2
80°
51°
3
80°
52°
4
82°
57°
5
88°
59°
6
89°
57°
7
84°
60°
8
89°
55°
9
78°
52°
10
79°
51°
11
80°
55°
12
83°
54°
13
81°
51°
14
80°
52°
15
87°
51°
16
87°
52°
17
86°
57°
18
87°
55°
19
77°
58°
20
76°
49°
21
75°
49°
22
75°
47°
23
76°
47°
24
76°
48°
25
83°
52°
26
84°
55°
27
81°
48°
28
73°
47°
29
72°
45°
30
73°
47°
31
76°
50°
1
74°
51°
2
72°
47°
3
73°
48°
4
70°
43°
5
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Penticton 2
Penticton 2's August 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 43° and 60°. The average high for August is 80° with an average low of 52°. 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 2. See also: September | October | November.