Calgary weather in December
Calgary in December averages -6°C (21°F) and 17 mm of rain. It is one of the driest months of the year here.
Of the twelve months in Calgary, December is the second coldest and the third driest.
- Average temp
- -6°C (21°F)
-12–0°C · 10–31°F
- Rainfall
- 17 mm
Not much rain
- Sunshine
- —
What is Calgary like in December?
Daytime
Days are cool.
Rain
Rain is usually light.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Calgary in December?
A warm mid-layer
Nights drop to around -12°C (10°F).
December compared with November and January
December in Calgary is 4.6°C cooler than November and about as wet as it, which averages -2°C (29°F).
December in Calgary is about the same temperature as January and about as wet as it, which averages -6°C (21°F).
Daylight in Calgary in December
On 15 December the sun is up for 7 hours 56 minutes in Calgary, rising about 08:33 and setting about 16:29 local time.
December ends 14 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
No month in Calgary has less daylight than December.
Where to stay in Calgary
Dates are a starting point for December.
Travel guides for Calgary
What to read before you book.
Calgary weather by month
TemperatureRainfall
How December compares with the rest of the year
December is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | -6°C / 21°F | 9 mm |
| February | -6°C / 20°F | 13 mm |
| March | -2°C / 28°F | 19 mm |
| April | 4°C / 40°F | 28 mm |
| May | 10°C / 49°F | 58 mm |
| June | 14°C / 57°F | 106 mm |
| July | 18°C / 64°F | 44 mm |
| August | 16°C / 61°F | 47 mm |
| September | 12°C / 54°F | 33 mm |
| October | 5°C / 42°F | 21 mm |
| November | -2°C / 29°F | 17 mm |
| December | -6°C / 21°F | 17 mm |
Check another month
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FAQs about Calgary in December
December climate averages for Calgary, 1991–2020.
Calgary averages -6°C (21°F) in December, ranging from about -12°C (10°F) at night to 0°C (31°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Barely. December sees only about 17 mm, so rain is unlikely to affect your plans.
They are about the same. December averages -6°C (21°F) and January -6°C (21°F), so temperature alone will not decide between them.
December is 4.6°C cooler than November, and about as wet.
It is outside the easiest window. The most comfortable stretch here is May to October; December sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what December is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 7 hours 56 minutes of daylight in mid-December, the least of any month in Calgary.
On 15 December, sunrise is about 08:33 and sunset about 16:29 local time. Both shift across the month — the month ends 14 minutes shorter than it starts.
