June weather forecastJuneau, AK
June
Weather in June
June is the onset of summer in Juneau, and it comes with a clear upward shift in temperatures. Snow is a thing of the past, giving way to moderate rainfall. As the city drifts into the warmest season, there are more hours of daylight than any other month. Sea temperatures also rise to a peak of 47.5°F (8.6°C), inviting a range of water-based actions. Overall, the pleasant weather and extended sunshine make June an ideal month for outdoor exploration in Juneau.Temperature
With the onset of June, the average high-temperature registers at a cool 51.6°F (10.9°C), subtly different from May's 47.5°F (8.6°C). Juneau throughout June, records an average low-temperature of 40.6°F (4.8°C).Humidity
In Juneau, the average relative humidity in June is 88%.Rainfall
In June, the rain falls for 21.3 days. Throughout June, 4.53" (115mm) of precipitation is accumulated. 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 June, the average water temperature is 47.5°F (8.6°C).Note: Swimming in 47.5°F (8.6°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.
Daylight
With an average of 18h and 12min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 4:00 am and sunset at 9:50 pm. On the last day of the month, sunrise is at 3:57 am and sunset at 10:06 pm AKDT.
Sunshine
The month with the most sunshine is June, with an average of 6.4h of sunshine.UV index
In Juneau, the average daily maximum UV index in June is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In June, the maximum UV index of 2 translates into these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Juneau, AK
- Average high temperature in June: 51.6°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 June: 40.6°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 June
Juneau, AK
- Average pressure in June: 29.96"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 June
Juneau, AK
- Average wind speed in June: 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 June
Juneau, AK
- Average humidity in June: 88%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (86%).
Average rainfall in June
Juneau, AK
- Average rainfall in June: 4.53"
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 June
Juneau, AK
- Average rainfall days in June: 21.3 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 June
Juneau, AK
- Average snowfall in June: 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 June
Juneau, AK
- Average snowfall days in June: 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 June
Juneau, AK
- Average sea temperature in June: 47.5°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 June /
Average sunshine in June
Juneau, AK
- Average daylight in June: 18h and 12min
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 June: 6h and 24min
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 June
Juneau, AK
- Average sunshine days in June: 6.3 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 June
Juneau, AK
- Average UV index in June: 2
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 June
Juneau, AK
- Average cloud cover in June: 70
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 June
Juneau, AK
- Average visibility in June: 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).
