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

In Juneau, temperatures reach their average annual highs in July, measuring 55.8°F (13.2°C) and a minimum average of 45.1°F (7.3°C).

Humidity

In Juneau, 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. 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 July, the average ocean temperature in Juneau is 50.7°F (10.4°C).
Note: Being in 50.7°F (10.4°C) waters at 55.4°F (13°C) is discomforting, but anything below 50°F (10°C) can jeopardize breathing and induce cold shock, factoring in physical endurance.

Daylight

In July, the average length of the day in Juneau is 17h and 26min.
On the first day of the month, sunrise is at 3:58 am and sunset at 10:05 pm. On the last day of July, in Juneau, 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 in Juneau are May and July, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 3 during July translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the warmest month in Juneau?

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

What is the temperature in July in Juneau?

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

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

How many hours of daylight does Juneau have in July?

The average day length in July in Juneau is 17h and 26min.

When is the sunrise / sunset in July in Juneau?

On the first day of July in Juneau, 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 many hours of sunshine does Juneau have in July?

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

When is 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, Alaska.

What is the UV index intensity in July in Juneau?

The average daily maximum UV index in July in Juneau, Alaska, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJulyASOND
Jun
July
Aug
Average high temperature
51.6°F 10.9°C
55.8°F 13.2°C
54.1°F 12.3°C
Average low temperature
40.6°F 4.8°C
45.1°F 7.3°C
44.6°F 7°C
Average pressure
29.96" 761mmHg
30.03" 763mmHg
29.96" 761mmHg
Average wind speed
3.7mph 6km/h
3.7mph 6km/h
4.2mph 6.8km/h
Average max. wind speed
3.9mph 6.3km/h
3.9mph 6.3km/h
4.5mph 7.2km/h
Average wind speed gusts
5.6mph 9km/h
5.8mph 9.3km/h
6.8mph 10.9km/h
Average humidity
88%
88%
90%
Average rainfall
4.53" 115mm
4.61" 117mm
7.56" 192mm
Average rainfall days
21.3
20.2
21.6
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
47.5°F 8.6°C
50.7°F 10.4°C
53.5°F 11.9°C
Average daylight
18h 1min
17h 2min
15h 2min
Average sunshine
6h 2min
5h 4min
5h 1min
Average sunshine days
6.3
8.8
7.3
Average UV index
2
3
2
Average cloud cover
70%
68%
70%
Average visibility
4mi 6.4km
4mi 6.4km
4mi 6.4km

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).

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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).

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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).

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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: 4.61"

The wettest month (with the highest rainfall) is October (9.88").
The driest month (with the least rainfall) is May (4.13").

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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: 0"

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

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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).
The 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: 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).

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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: 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).

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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

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).

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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).

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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).

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Juneau, Alaska, USA

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