Calgary Weather in December
In December, Calgary averages a high of -1°C (30°F) and a low of -13°C (9°F), based on 41 years of historical weather data from CALGARY GLENMORE DAM.
-1°C
Average high
30°F
-13°C
Average low
9°F
19°C
Record high
67°F · 1999
-38°C
Record low
-37°F · 1996
What to Expect in Calgary in December
Typical December days in Calgary reach -1°C (30°F) during the afternoon and cool to around -13°C (9°F) overnight. On average, measurable rain falls on about 24% of days this month. Over the past 41 years, December temperatures in Calgary have ranged from a record high of 19°C (1999) down to a record low of -38°C (1996).
For a day-by-day look or other months, see the full Calgary weather history.