S
M
T
W
T
F
S
29
30°
20°
30
31°
22°
1
32°
24°
2
33°
32°
3
40°
33°
4
42°
24°
5
41°
23°
6
37°
22°
7
33°
24°
8
32°
23°
9
38°
30°
10
34°
21°
11
34°
22°
12
Hist. Avg.
33°
23°
13
Hist. Avg.
32°
23°
14
Hist. Avg.
32°
22°
15
Hist. Avg.
32°
22°
16
Hist. Avg.
32°
22°
17
Hist. Avg.
32°
22°
18
Hist. Avg.
31°
22°
19
Hist. Avg.
31°
22°
20
Hist. Avg.
31°
22°
21
Hist. Avg.
31°
22°
22
Hist. Avg.
31°
21°
23
Hist. Avg.
31°
21°
24
Hist. Avg.
31°
21°
25
Hist. Avg.
31°
21°
26
Hist. Avg.
31°
21°
27
Hist. Avg.
31°
21°
28
Hist. Avg.
31°
21°
29
Hist. Avg.
31°
21°
30
Hist. Avg.
31°
21°
31
Hist. Avg.
31°
22°
1
Hist. Avg.
34°
24°
2
Hist. Avg.
34°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Penticton
Penticton's December 2026 forecast shows daily high temperatures ranging from 30° to 42°, with overnight lows between 20° and 33°. The average high for December is 35° with an average low of 25°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Penticton. See also: January | February | March.
