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

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 in Juneau, Alaska, is a moderate summer month, with average temperature fluctuating between 55.8°F (13.2°C) and 50°F (10°C).

Temperature

The warmest month is July, with an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 50°F (10°C).

Humidity

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

Rainfall

In Juneau, it is raining for 20.2 days, with typically 4.61" (117mm) of accumulated precipitation. Throughout the year, there are 172.4 rainfall days, and 85.87" (2181mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Ocean temperature

In Juneau, the average seawater 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

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

Sunshine

The average sunshine in July 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 value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 3 in July transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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?

The warmest month in Juneau is July, with an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 50°F (10°C).

What is the temperature in July in Juneau?

The average high-temperature, in July, is 55.8°F (13.2°C), while the average low-temperature is 50°F (10°C).

What is the average humidity in July in Juneau?

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

How much does it rain in Juneau in July?

In July, in Juneau, Alaska, the rain falls for 20.2 days. Throughout July, 4.61" (117mm) of precipitation is accumulated.

When it does not snow in Juneau?

In Juneau, Alaska, snow does not fall in June through September.

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

How long on average sun shines in July in Juneau?

In Juneau, Alaska, the average sunshine in July is 5.7h.

What is the month 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.

How high is the UV index in July in Juneau?

In July, the average daily maximum UV index in Juneau is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in July - Juneau, AK
  • Average high temperature in July: 55.8°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 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: 88%

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

Average rainfall in July - Juneau, AK
  • Average rainfall in July: 4.61"

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 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 lowest number of rainy days is February (4.8 days).

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

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 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 lowest number of snowfall days are 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: 5.7h

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 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).