June 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

Weather in June

June, the first month of the summer, in Juneau, is a fresh month, with average temperature fluctuating between 40.6°F (4.8°C) and 51.6°F (10.9°C).

Temperature

In June, the average high-temperature is relatively the same as in May - a fresh 51.6°F (10.9°C). In Juneau, the average low-temperature is 40.6°F (4.8°C).

Humidity

In June, the average relative humidityau is 88%.

Rainfall

In Juneau, it is raining for 21.3 days, with typically 4.53" (115mm) of accumulated precipitation. In Juneau, during the entire year, the rain falls for 172.4 days and collects up to 85.87" (2181mm) of precipitation.

Snowfall

June through September are months without snowfall.

Ocean temperature

In Juneau, the average seawater temperature is 47.5°F (8.6°C).
Note: Swimming in 47.5°F (8.6°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The month with the longest days is June, with an average of 18.2h of daylight.

Sunshine

June has the most sunshine of the year, with an average of 6.4h of sunshine.

UV index

In Juneau, Alaska, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In June, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always 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.
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FAQ

What is the temperature in June in Juneau?

The average high-temperature, in June, is 51.6°F (10.9°C), while the average low-temperature is 40.6°F (4.8°C).

What is the average humidity in June in Juneau?

The average relative humidity in June is 88%.

How many days does it rain in June in Juneau?

In Juneau, Alaska, in June, during 21.3 rainfall days, 4.53" (115mm) of precipitation is typically accumulated.

Does it snow in Juneau in June?

In June, it doesn't snow. May is the latest month when it typically snows.

When it does not snow in Juneau?

In Juneau snow does not fall in June through September.

What is the water temperature in June in Juneau?

In Juneau, Alaska, in June, the average water temperature is 47.5°F (8.6°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

When are the longest days in Juneau?

The month with the longest days in Juneau, Alaska, is June, with an average of 18.2h of daylight.

What is the average length of the day in June in Juneau?

The average length of the day in June in Juneau, Alaska, is 18.2h.

What month has the most sunshine in Juneau?

June has the most sunshine of the year in Juneau, Alaska, with an average of 6.4h of sunshine.

How long on average sun shines in June in Juneau?

In Juneau, Alaska, the average sunshine in June is 6.4h.

How high is the UV index in June in Juneau?

In June, the average daily maximum UV index in Juneau, Alaska, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in June
Juneau, AK

Average temperature in June - Juneau, AK
  • Average high temperature in June: 10.9°C

The warmest month (with the highest average high temperature) is July (13.2°C).
Months with the lowest average high temperature are January and December (-3.5°C).

  • Average low temperature in June: 4.8°C

The month with the highest average low temperature is July (7.3°C).
The coldest month (with the lowest average low temperature) is February (-8.3°C).

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Average pressure in June
Juneau, AK

Average pressure in June - Juneau, AK
  • Average pressure in June: 1014.6mbar

The month with the highest atmospheric pressure is July (1016.8mbar).
The month with the lowest atmospheric pressure is November (1009.1mbar).

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Average wind speed in June
Juneau, AK

Average wind speed in June - Juneau, AK
  • Average wind speed in June: 5.9km/h

The windiest month (with the highest average wind speed) is January (11.1km/h).
The calmest month (with the lowest average wind speed) is June (5.9km/h).

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Average humidity in June
Juneau, AK

Average humidity in June - Juneau, AK
  • Average humidity in June: 88%

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

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Average rainfall in June
Juneau, AK

Average rainfall in June - Juneau, AK
  • Average rainfall in June: 115mm

The wettest month (with the highest rainfall) is October (251mm).
The driest month (with the least rainfall) is May (105mm).

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Average rainfall days in June
Juneau, AK

Average rainfall days in June - Juneau, AK
  • Average rainfall days in June: 21.3 days

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

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Average snowfall in June
Juneau, AK

Average snowfall in June - Juneau, AK
  • Average snowfall in June: 0mm

The month with the highest snowfall is December (1595mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in June
Juneau, AK

Average snowfall days in June - Juneau, AK
  • Average snowfall days in June: 0 days

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

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Average sea temperature in June
Juneau, AK

Average sea temperature in June - Juneau, AK
  • Average sea temperature in June: 8.6°C

The best month for swimming (with the highest average sea temperature) is August (11.9°C).
The coldest month (with the lowest average sea temperature) is March (4.7°C).

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Average daylight in June /
Average sunshine in June
Juneau, AK

Average daylight in June / Average sunshine in June - Juneau, AK
  • Average daylight in June: 18.2h

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

  • Average sunshine in June: 6.4h

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

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Average sunshine days in June
Juneau, AK

Average sunshine days in June - Juneau, AK
  • Average sunshine days in June: 6.3 days

The month with the most sunshine days is May (10 days).
The month with the least sunshine days is November (6.1 days).

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Average UV index in June
Juneau, AK

Average UV index in June - Juneau, AK
  • Average UV index in June: 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).

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Average cloud cover in June
Juneau, AK

Average cloud cover in June - Juneau, AK
  • Average cloud cover in June: 70

Months with the most cloud cover are January and November (Cloud cover 72).
The month with the least cloud cover is May (Cloud cover 61).

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Average visibility in June
Juneau, AK

Average visibility in June - Juneau, AK
  • Average visibility in June: 7km

Months with the highest visibility are February, March, May, June, July, August, September, October and November (7km).
Months with the lowest visibility are January, April and December (6km).

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