Cool
Average highs are around 1°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 1°C, so pack for cooler days. Sunshine averages 3.7h per day, so this is not one of the brighter months. Rainfall averages 15mm, which is relatively low for holiday planning.
Monthly averages
Temp
1°C
Rain
15mm
Sun
3.7h
Weather score
34
Poor
Cool
Average highs are around 1°C, so pack for cooler days.
Drier
Rainfall averages 15mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3.7h per day, so this is not one of the brighter months.
Map
Compare Montana, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
December1°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
December15mm average rain
December is one of Montana's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to April and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December3.7 hours average sun
December is one of Montana's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
December34 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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