Calgary · December
Run in the midday.
Cold: average high 27°F, low 11°F. Layering becomes the workout. Subfreezing mornings mean midday is the only reliably runnable window. Layer up and watch for wind chill.
Avg high / low
27° / 11°F
Humidity
69%
Rain days
9/mo
Wind
11 mph
What December feels like in Calgary
Sunrise
09:32
Mid-month average
Sunset
17:31
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Often the warmest few hours of a cold day. If you can only run once, midday gives you the most temperate window.
Evening
Cold drops back in fast after sunset. Tight window — done before headlamp territory.
What to wear running in Calgary in December
The kit for December in Calgary: cold-weather layers, gloves, and ear coverage on most mornings.
December vs the surrounding months
vs November
-9° avg high
0 rain days
Calgary in November →
December
27°F avg high
9 rain days
Best: midday
vs January
-3° avg high
+2 rain days
Calgary in January →
Frequently Asked Questions
What is the best time of day to run in Calgary in December?+
Midday. Subfreezing mornings mean midday is the only reliably runnable window. Layer up and watch for wind chill.
What's the average temperature in Calgary in December?+
Average high 27°F, average low 11°F.
How does December compare to surrounding months in Calgary?+
Compared to November (avg high 37°F), December is cooler. Compared to January (avg high 30°F), December is cooler.
Does it rain often in Calgary in December?+
Expect about 9 measurable rain days in December, on average.