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
July, like June, in Juneau, Alaska, is a comfortable summer month, with average temperature varying between 50°F (10°C) and 63.9°F (17.7°C).

Temperature

July is the warmest month, with an average high-temperature of 63.9°F (17.7°C) and an average low-temperature of 50°F (10°C).

Humidity

In July, the average relative humidity is 81.3%.

Rainfall

In Juneau, Alaska, in July, it is raining for 17.7 days, with typically 4.6" (116.8mm) of accumulated precipitation. Throughout the year, there are 229.8 rainfall days, and 62.3" (1581.6mm) of precipitation is accumulated.

Snowfall

Throughout the year, 86.7" (2202mm) of snow is accumulated.

Ocean temperature

In July, the average ocean temperature in Juneau 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.

Daylight

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

Sunshine

In July, the average sunshine in Juneau is 5.9h.

UV index

June and July, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the warmest month in Juneau?

With an average high-temperature of 63.9°F (17.7°C) and an average low-temperature of 50°F (10°C), July is the warmest month in Juneau, Alaska.

What is the temperature in July in Juneau?

In Juneau, in July, the average high-temperature is 63.9°F (17.7°C), and the average low-temperature is 50°F (10°C).

What is the average humidity in July in Juneau?

The average relative humidity in July in Juneau, Alaska, is 81.3%.

How many days does it rain in July in Juneau?

In Juneau, Alaska, in July, it is raining for 17.7 days, with typically 4.6" (116.8mm) of accumulated precipitation.

What is the water temperature in July in Juneau?

In Juneau, 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.

How many hours of daylight does Juneau have in July?

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

How many hours of sunshine does Juneau have in July?

The average sunshine in July in Juneau, Alaska, is 5.9h.

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

June and July, with an average maximum UV index of 5, are months with the highest UV index in Juneau, Alaska.

What is the UV index reading in July in Juneau?

In July, the average daily maximum UV index in Juneau is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in July - Juneau, AK
  • Average high temperature in July: 63.9°F

The warmest month (with the highest average high temperature) is July (63.9°F).
The month with the lowest average high temperature is January (32.8°F).

  • Average low temperature in July: 50°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 July - Juneau, AK
  • Average humidity in July: 81.3%

The month with the highest relative humidity is September (87.9%).
The month with the lowest relative humidity is May (76.3%).

Average rainfall in July - Juneau, AK
  • Average rainfall in July: 4.6"

Wettest months (with the highest rainfall) are September and October (8.6").
The driest month (with the lowest rainfall) is April (2.9").

Average rainfall days in July - Juneau, AK
  • Average rainfall days in July: 17.7 days

The month with the highest number of rainy days is October (23.9 days).
The month with the lowest number of rainy days is June (15.8 days).

Average snowfall in July - Juneau, AK
  • Average snowfall in July: 0"

The month with the highest snowfall is January (27.7").
Months with the lowest snowfall are May, June, July, August and September (0").

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 (10.6 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average sea temperature in July - Juneau, AK
  • Average sea temperature in July: 50.7°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 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 shortest days is December (Average daylight: 6.5h).

  • Average sunshine in July: 5.9h

The month with most sunshine is May (Average sunshine: 7.5h).
The month with least sunshine is December (Average sunshine: 1.3h).

Average UV index in July - Juneau, AK
  • Average UV index in July: 5

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).

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