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, like June, in Juneau, Alaska, is another enjoyable summer month, with temperature in the range of an average high of 63.9°F (17.7°C) and an average low of 50°F (10°C).

Temperature

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

Humidity

In Juneau, the average relative humidity in July is 81.3%.

Rainfall

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

Snowfall

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

Ocean temperature

In July, the average ocean temperature is 50.7°F (10.4°C).
Note: 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

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

Sunshine

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

UV index

Months with the highest UV index in Juneau, Alaska, are June and July, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
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.

What is the warmest month in Juneau?

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

What is the temperature in July 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.

When it does not snow in Juneau?

May through September are months without snowfall in Juneau, Alaska.

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?

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

How long on average sun shines in July in Juneau?

In July, the average sunshine is 5.9h.

What is the month with the highest UV index in Juneau?

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

What is the UV index intensity in July in Juneau?

In July, the average daily maximum UV index in Juneau is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in July - Juneau, AK
  • Average high temperature in July: 17.7°C

The warmest month (with the highest average high temperature) is July (17.7°C).
The month with the lowest average high temperature is January (0.4°C).

  • Average low temperature in July: 10°C

The month with the highest average low temperature is July (10°C).
The coldest month (with the lowest average low temperature) is January (-4.6°C).

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: 116.8mm

The wettest month (with the highest rainfall) is September (219.5mm).
The driest month (with the lowest rainfall) is April (74.7mm).

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: 0mm

The month with the highest snowfall is January (703.6mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

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: 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).

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).