Cool
Average highs are around -3°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around -3°C, so pack for cooler days. Sunshine averages 3h per day, so this is not one of the brighter months. Rainfall averages 16mm, which is relatively low for holiday planning.

Monthly averages
Temp
-3°C
Rain
16mm
Sun
3h
Weather score
32
Poor
Cool
Average highs are around -3°C, so pack for cooler days.
Drier
Rainfall averages 16mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3h per day, so this is not one of the brighter months.
Map
Compare Calgary, Alberta, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
December-3°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
December16mm average rain
December is one of Calgary's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December3 hours average sun
December is one of Calgary's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
December32 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
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