July 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 July

July in Juneau, Alaska, is a moderate summer month, with average temperature ranging between max 55.8°F (13.2°C) and min 45.1°F (7.3°C).

Temperature

July is the warmest month, with an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 45.1°F (7.3°C).

Humidity

In Juneau, the average relative humidity in July is 88%.

Rainfall

In Juneau, during 20.2 rainfall days, 4.61" (117mm) of precipitation is typically accumulated. 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 in Juneau, Alaska.

Ocean temperature

In Juneau, in July, the average water temperature is 50.7°F (10.4°C).
Note: Swimming in 50.7°F (10.4°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

In July, the average length of the day in Juneau is 17.4h.

Sunshine

In Juneau, the average sunshine is 5.7h.

UV index

Months with the highest UV index are May and July, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sun damage is advised. 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 warmest month in Juneau?

With an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 45.1°F (7.3°C), July is the warmest month in Juneau.

What is the temperature in July in Juneau?

In July, in Juneau, the average high-temperature is 55.8°F (13.2°C), and the average low-temperature is 45.1°F (7.3°C).

What is the average humidity in July in Juneau?

The average relative humidity in July is 88%.

How many days does it rain in July in Juneau?

In Juneau, Alaska, in July, during 20.2 rainfall days, 4.61" (117mm) of precipitation is typically accumulated.

When it does not snow in Juneau?

June through September are months without snowfall in Juneau.

What is the ocean temperature in July in Juneau?

In Juneau, Alaska, the average seawater temperature in July is 50.7°F (10.4°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.

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

The average length of the day in July in Juneau is 17.4h.

How many hours of sunshine does Juneau have in July?

The average sunshine in July is 5.7h.

What are the months with the highest UV index in Juneau?

May and July, with an average maximum UV index of 3, are months with the highest UV index in Juneau.

What is the UV index intensity in July in Juneau?

In July, the average daily maximum UV index in Juneau is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in July
Juneau, AK

Average temperature in July - Juneau, AK
  • Average high temperature in July: 13.2°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 July: 7.3°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 July
Juneau, AK

Average pressure in July - Juneau, AK
  • Average pressure in July: 1016.8mbar

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 July
Juneau, AK

Average wind speed in July - Juneau, AK
  • Average wind speed in July: 6km/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 July
Juneau, AK

Average humidity in July - Juneau, AK
  • Average humidity in July: 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 July
Juneau, AK

Average rainfall in July - Juneau, AK
  • Average rainfall in July: 117mm

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 July
Juneau, AK

Average rainfall days in July - Juneau, AK
  • Average rainfall days in July: 20.2 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 July
Juneau, AK

Average snowfall in July - Juneau, AK
  • Average snowfall in July: 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 July
Juneau, AK

Average snowfall days in July - Juneau, AK
  • Average snowfall days in July: 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 July
Juneau, AK

Average sea temperature in July - Juneau, AK
  • Average sea temperature in July: 10.4°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 July /
Average sunshine in July
Juneau, AK

Average daylight in July / Average sunshine in July - Juneau, AK
  • Average daylight in July: 17.4h

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 July: 5.7h

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 July
Juneau, AK

Average sunshine days in July - Juneau, AK
  • Average sunshine days in July: 8.8 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 July
Juneau, AK

Average UV index in July - Juneau, AK
  • Average UV index in July: 3

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 July
Juneau, AK

Average cloud cover in July - Juneau, AK
  • Average cloud cover in July: 68

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 July
Juneau, AK

Average visibility in July - Juneau, AK
  • Average visibility in July: 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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