Verdict: Tough month
Banff Weather in December
December is deep-winter territory in Banff — daily highs around -5°C (23°F) and lows near -14°C (7°F). Expect showers on roughly 9 days of the month — rarely trip-ruining, worth planning around. If your dates are flexible, most travelers will have a better time in Banff outside December.
Average high
-5°C / 23°F
Average low
-14°C / 7°F
Rain days
~9
Precipitation
39 mm
What to pack for Banff in December
- Full winter kit — insulated coat, gloves, warm hat
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Banff: Jul (23°C / 73°F) · Coolest: Jan (-5°C / 23°F) · Wettest: Jun (~13 rain days)
-5°
-14°
Jan
-3°
-14°
Feb
1°
-11°
Mar
6°
-6°
Apr
12°
0°
May
17°
4°
Jun
23°
9°
Jul
22°
8°
Aug
18°
4°
Sep
9°
-2°
Oct
-1°
-11°
Nov
-5°
-14°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)