July weather forecast
Juneau, AK

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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 brings classic summer weather to Juneau; it is the hottest month with temperatures reaching up to 55.8°F (13.2°C). The days are long and sunny, and the sea warms to 50.7°F (10.4°C), the highest of the year. Despite the heat, the humidity remains comfortable, making July a perfect time for picnics and hikes under the blue, sunny skies. While there is rainfall, it is sporadic and does not tend to disrupt outdoor activities.

Temperature

July registers as the month with the highest average temperatures, reaching 55.8°F (13.2°C) at its peak and 45.1°F (7.3°C) at the lowest.

Humidity

The average relative humidity in July is 88%.

Rainfall

In Juneau, during July, the rain falls for 20.2 days and regularly aggregates up to 4.61" (117mm) of 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, in July, the average water temperature is 50.7°F (10.4°C).
Note: Dipping into 50.7°F (10.4°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.

Daylight

The average length of the day in July is 17h and 26min.
On the first day of July, sunrise is at 3:58 am and sunset at 10:05 pm. On the last day of the month, sunrise is at 4:49 am and sunset at 9:18 pm AKDT.

Sunshine

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

UV index

The months with the highest UV index are May and July, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 3 during July leads to these advisories:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What part of the year is the hottest?

July tends to be the warmest month, with temperatures averaging a daily high of 55.8°F (13.2°C) and a low of 45.1°F (7.3°C).

What is the average July temperature?

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?

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

How much does it rain in July?

In Juneau, in July, it is raining for 20.2 days, with typically 4.61" (117mm) of accumulated precipitation.

When it does not snow?

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

What is the ocean temperature in July?

In Juneau, in July, the average water temperature is 50.7°F (10.4°C). Swimming in 50.7°F (10.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Juneau have in July?

In July, the average day length is 17h and 26min.

When are sunrise and sunset in July?

On the first day of July, sunrise is at 3:58 am and sunset at 10:05 pm. On the last day of the month, sunrise is at 4:49 am and sunset at 9:18 pm AKDT.

How long on average sun shines in July?

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

What is the month with the highest UV index?

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

What is the UV index reading in July?

In Juneau, the average daily maximum UV index in July is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Juneau, AK

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).
The months with the lowest average high temperature are January and December (25.7°F).

  • Average low temperature in July: 45.1°F

The month with the highest average low temperature is July (45.1°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).

Average pressure in July
Juneau, AK

Average pressure in July - Juneau, AK
  • Average pressure in July: 30.03"Hg

The month with the highest atmospheric pressure is July (30.03"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

Average wind speed in July
Juneau, AK

Average wind speed in July - Juneau, AK
  • Average wind speed in July: 3.7mph

The windiest month (with the highest average wind speed) is January (6.9mph).
The calmest months (with the lowest average wind speed) are June and July (3.7mph).

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%).

Average rainfall in July
Juneau, AK

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 least rainfall) is May (4.13").

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).

Average snowfall in July
Juneau, AK

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

The month with the highest snowfall is December (62.8").
The months with the least snowfall are June, July, August and September (0").

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).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in July
Juneau, AK

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 / Average sunshine in July - Juneau, AK
  • Average daylight in July: 17h and 2min

The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).

  • Average sunshine in July: 5h and 4min

The month with the most sunshine is June (Average sunshine: 6h and 24min).
The month with the least sunshine is November (Average sunshine: 2h and 36min).

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).

Average UV index in July
Juneau, AK

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

The months with the highest UV index are May and July (UV index 3).
The months with the lowest UV index are January, April, October, November and December (UV index 1).

Average cloud cover in July
Juneau, AK

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

The 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).

Average visibility in July
Juneau, AK

Average visibility in July - Juneau, AK
  • Average visibility in July: 4mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).

Juneau, Alaska, USA

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