Cool
Average highs are around 4°C, so pack for cooler days.
December verdict
Mammoth Lakes, California, United States in December
Weather score33Poor
Poor for holiday weather
Average highs are around 4°C, so pack for cooler days. Sunshine averages 5.9h per day, enough for a balanced month. Rainfall averages 119mm, so some wet days are possible.
December weather
Monthly averages
Temp
4°C
Rain
119mm
Sun
5.9h
Weather score
33
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 119mm, so some wet days are possible.
Some sun
Sunshine averages 5.9h per day, enough for a balanced month.
Map
Weather map
Compare Mammoth Lakes, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December4°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.
Rain
December119mm average rain
December is one of Mammoth Lakes' wettest months, so rain is likely to be a major planning factor.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December5.9 hours average sun
December is one of Mammoth Lakes' cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
December33 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.
