Juneau
Alaska, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Juneau, AK

Blooming fireweed in Juneau, Alaska, with snowy mountain peaks in the distance
Blooming fireweed in Juneau, Alaska, with snowy mountain peaks in the distance
The first month of the spring, March, is still a freezing cold month in Juneau, Alaska, with average temperature varying between 28°F (-2.2°C) and 29.5°F (-1.4°C).

Temperature

In Juneau, the average high-temperature is relatively the same as in February - a still freezing cold 29.5°F (-1.4°C). In Juneau, Alaska, in March, the average low-temperature is 28°F (-2.2°C).

Humidity

The average relative humidity in Juneau is 89%.

Rainfall

In Juneau, in March, during 5.3 rainfall days, 5.91" (150mm) of precipitation is typically accumulated. Throughout the year, in Juneau, there are 172.4 rainfall days, and 85.87" (2181mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Juneau, during March, snow falls for 20.5 days and regularly aggregates up to 42.28" (1074mm) of snow. Throughout the year, in Juneau, there are 126.6 snowfall days, and 290.12" (7369mm) of snow is accumulated.

Ocean temperature

March is the month with the coldest seawater in Juneau, with an average ocean temperature of 40.5°F (4.7°C).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

The average length of the day in March is 11.9h.

Sunshine

In Juneau, the average sunshine is 4.6h.

UV index

The average daily maximum UV index in March is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in March in Juneau?

In Juneau, in March, the average high-temperature is 29.5°F (-1.4°C), and the average low-temperature is 28°F (-2.2°C).

What is the average humidity in March in Juneau?

In Juneau, the average relative humidity in March is 89%.

How many days does it rain in March in Juneau?

In Juneau, in March, during 5.3 rainfall days, 5.91" (150mm) of precipitation is typically accumulated.

How many days does it snow in March in Juneau?

In Juneau, in March, during 20.5 snowfall days, 42.28" (1074mm) of snow is typically accumulated.

What month is the ocean coldest in Juneau?

March is the month with the coldest seawater in Juneau, with an average ocean temperature of 40.5°F (4.7°C).

How cold is the water in March in Juneau?

In Juneau, the average seawater temperature in March is 40.5°F (4.7°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

How many hours of daylight does Juneau have in March?

The average length of the day in March is 11.9h.

How many hours of sunshine does Juneau have in March?

In Juneau, Alaska, the average sunshine in March is 4.6h.

What is the UV index intensity in March in Juneau?

In March, the average daily maximum UV index in Juneau, Alaska, is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.
Average temperature in March - Juneau, AK
  • Average high temperature in March: 29.5°F

The warmest month (with the highest average high temperature) is July (55.8°F).
Months with the lowest average high temperature are January and December (25.7°F).

  • Average low temperature in March: 28°F

The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

Average humidity in March - Juneau, AK
  • Average humidity in March: 89%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (86%).

Average rainfall in March - Juneau, AK
  • Average rainfall in March: 5.91"

The wettest month (with the highest rainfall) is October (9.88").
The driest month (with the lowest rainfall) is May (4.13").

Average rainfall days in March - Juneau, AK
  • Average rainfall days in March: 5.3 days

The month with the highest number of rainy days is September (21.9 days).
The month with the lowest number of rainy days is February (4.8 days).

Average snowfall in March - Juneau, AK
  • Average snowfall in March: 42.28"

The month with the highest snowfall is December (62.8").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in March - Juneau, AK
  • Average snowfall days in March: 20.5 days

The month with the highest number of snowfall days is January (21.9 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature in March - Juneau, AK
  • Average sea temperature in March: 40.3°F

The best month for swimming (with the highest average sea temperature) is August (53.5°F).
The coldest month (with the lowest average sea temperature) is March (40.3°F).

Average daylight in March / Average sunshine in March - Juneau, AK
  • Average daylight in March: 11.9h

The month with the longest days is June (Average daylight: 18.2h).
The month with shortest days is December (Average daylight: 6.5h).

  • Average sunshine in March: 4.6h

The month with most sunshine is June (Average sunshine: 6.4h).
The month with least sunshine is November (Average sunshine: 2.6h).

Average UV index in March - Juneau, AK
  • Average UV index in March: 2

Months with the highest UV index are May and July (UV index 3).
Months with the lowest UV index are January, April, October, November and December (UV index 1).