Cool
Average highs are around 5°C, so pack for cooler days.
January verdict
Poor for holiday weather
Average highs are around 5°C, so pack for cooler days. Sunshine averages 5.2h per day, enough for a balanced month. Rainfall averages 212mm, so showers are a real planning factor.
Monthly averages
Temp
5°C
Rain
212mm
Sun
5.2h
Weather score
21
Poor
Cool
Average highs are around 5°C, so pack for cooler days.
Wet
Rainfall averages 212mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.2h per day, enough for a balanced month.
Map
Compare Lassen Volcanic National Park, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
January5°C average high
January 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.
January212mm average rain
January is one of Lassen Volcanic National Park's 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.
January5.2 hours average sun
January is one of Lassen Volcanic National Park's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
January21 weather score
January 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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