Typical Run Score
58
Mixed
Calgary · December
Running in Calgary in December
Typical December running conditions in Calgary — and a live Run Score so you can see how today compares with the norm.
Avg temperature
21°F
Frigid
Avg dew point
14°F
Comfortable
Best window
11 AM–9 PM
Local time
Calgary · today vs the December normTemperature · dew point · wind · timing
How December compares in Calgary
December ranks 11th of 12 months for running in Calgary, with a typical daytime Run Score of 58 (Mixed). For reference, the best month is May (score 90) and the hardest is January (score 55). The kindest window in December is typically 11 AM–9 PM. Precipitation falls in roughly 13% of hours this month. Use the live tool below to see how today actually compares with the December norm.
Running weather in nearby cities
Same engine, different climate. Check the best time to run in these cities too.
Running in Calgary in December: FAQ
Is it good to run in Calgary in December?
It's runnable, but at least one factor — usually heat or dew point — taxes the effort. The typical daytime Run Score is 58 (Mixed), with temperatures around 21°F (-6°C) and comfortable dew points. The best window is usually 11 AM–9 PM.
How hot is it for running in Calgary in December?
Typical temperatures average 21°F (-6°C) (Frigid) with dew points near 14°F. Dew point — not the thermometer — usually decides how hard the run feels.
What is a good Run Score?
Scores run 0–100. 97+ is Perfect, 80–96 is Great — conditions are actively working in your favour. 65–79 (Good) is solid. 45–64 (Mixed) means at least one factor — usually heat or dew point — is taxing you. Below 45 (Poor), expect a noticeably harder effort or hold back for safety.
Why does dew point matter more than temperature?
Your body cools by evaporating sweat. When the dew point climbs above roughly 60°F, the air is too saturated for sweat to evaporate efficiently, so heat builds up even if the thermometer looks reasonable. That's why a 70°F muggy morning can feel harder than a dry 80°F afternoon.
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