S
M
T
W
T
F
S
29
31°
17°
30
32°
15°
1
31°
14°
2
28°
14°
3
30°
13°
4
30°
13°
5
28°
12°
6
25°
11°
7
23°
13°
8
26°
12°
9
23°
12°
10
25°
10°
11
19°
6°
12
23°
6°
13
23°
7°
14
24°
5°
15
28°
5°
16
27°
8°
17
27°
6°
18
29°
5°
19
22°
-1°
20
22°
-3°
21
16°
-4°
22
11°
-9°
23
12°
-9°
24
9°
-8°
25
10°
-8°
26
10°
-7°
27
11°
-10°
28
12°
-8°
29
11°
0°
30
13°
0°
31
17°
-14°
1
15°
-10°
2
9°
-9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Grande Prairie
Grande Prairie's December 2026 forecast shows daily high temperatures ranging from 9° to 32°, with overnight lows between -14° and 17°. The average high for December is 21° with an average low of 3°. 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 Grande Prairie. See also: January | February | March.
