Juneau (AK) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Juneau

Juneau average temperature chart (Celsius) Juneau average temperature chart (Fahrenheit)
Average monthly temperatures in Juneau (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2.9 -0.5 2.2 6.3 10.6 13.9 15.4 14.9 11.6 7 1.4 -1.3
°F 26.7 31.1 35.9 43.4 51.1 57.1 59.8 58.9 52.8 44.6 34.5 29.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Juneau monthly rainfall chart (mm) Juneau monthly rainfall chart (inches)
Average monthly rainfall in Juneau (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 147 123 113 90 101 92 117 157 210 253 169 155
inches 5.8 4.9 4.5 3.5 4 3.6 4.6 6.2 8.3 10 6.7 6.1
Rainy days 17 15 16 15 15 15 15 17 19 22 18 19

Average annual rainfall in Juneau: 1651.833mm (650.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Juneau

Juneau average daily sunshine chart
Average daily sunshine Juneau
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 3.1 3.7 4.9 6.7 8.2 7.2 6.7 5.9 4.1 2.6 2.3 1.7

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Juneau average minimum / maximum temperatures (Celsius) Juneau average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Juneau (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -9 -7.1 -4.8 -2 1.8 5.1 6.8 6.5 4.3 1.3 -4.1 -6.8
Max °C -2.8 -0.4 2.4 6.6 10.9 14.2 15.7 15.2 11.8 7.2 1.5 -1.2
Min °F 15.8 19.3 23.5 28.5 35.2 41.1 44.2 43.6 39.7 34.3 24.6 19.8
Max °F 21.4 25.3 29.8 36.1 43.3 49.3 52.2 51.4 46.4 39.6 29.7 24.8

Sea temperature

The graph below shows the average sea temperature.

Juneau average sea temperature chart (Celsius) Juneau average sea temperature chart (Fahrenheit)
Average sea temperature around Juneau in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6 5.7 5.6 6.3 8.1 10.4 12.3 13 11.7 9.8 8.3 7.1
°F 42.9 42.3 42.1 43.4 46.5 50.7 54.1 55.4 53.1 49.6 46.9 44.7

Wind speed

The graph below shows the average wind speed.

Juneau average winspeed by month (km/h) Juneau average winspeed by month (mph)
Average wind speed in Juneau (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 14 14 14 14 13 12 12 13 16 14 15
mph 9 9 9 9 9 8 7 7 8 10 9 9

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Juneau relative humidity averages
Average relative humidity in Juneau
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
80% 80% 77% 75% 74% 76% 79% 82% 86% 86% 84% 82%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Juneau weather stats

Juneau weather statistics
Hottest month: July 15.4°C 59.7°F
Driest month: April 90mm 3.5ins
Sunniest month: May 8.2hrs
Coldest month: January -2.9°C 26.8°F
Wettest month: October 253mm 10ins
Warmest sea: August 13°C 55.4°F
Map showing location of Juneau (58.30194, -134.41972) Juneau map pin © Google

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