Juneau weather in December 2021

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-1
-1°C max day temperature
1
1 hour of sunshine per day
19
19 days with some rainfall
-7
-7°C min night temperature
7
7 hours of daylight per day
0
No heat & humidity
155
155 mm of monthly rainfall
0
No UV (Maximum) Index UV index
5
5°C sea temperature

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The December weather guide for Juneau, Alaska shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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How cold is it in Juneau in December?

Daytime temperatures usually reach -1°C in Juneau in December, falling to -7°C at night.

How sunny is it in Juneau in December?

There are normally 1 hour of bright sunshine each day in Juneau in December - that's 20% of daylight hours.

Is the sea cold around Juneau in December?

The average sea temperature around Juneau in December is 5°C.

Does it rain in Juneau in December?

There are usually 19 days with some rain in Juneau in December and the average monthly rainfall is 155mm. Rain may fall as snow in this month.

Metric (°C / mm) | Imperial (°F / inches)