August weather forecastGirdwood, AK
August
Weather in August
August brings slightly cooler temperatures compared to July. Nonetheless, Girdwood's weather remains warm, with increased rain showers noted. A touch more cloud cover than July, combined with decreasing daylight hours, subtly heralds the approaching end of summer. The gradual transition towards the cooler and shorter days of September begins.Temperature
August brings a marginal elevation to a fresh 53.4°F (11.9°C) from July's 56.8°F (13.8°C) in Girdwood's average high-temperatures. Girdwood records a mean low-temperature of 41.7°F (5.4°C) in August.Humidity
In August, the average relative humidity is 86%.Rainfall
In Girdwood, during August, the rain falls for 21.8 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 158.6 rainfall days, and 23.62" (600mm) of precipitation is accumulated.Snowfall
In Girdwood, snow does not fall in June through August.Daylight
In August, the average length of the day is 15h and 41min.On the first day of the month, sunrise is at 5:33 am and sunset at 10:32 pm. On the last day of August, sunrise is at 6:49 am and sunset at 9:04 pm AKDT.
Sunshine
The average sunshine in August is 6.6h.UV index
In August, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In August, the maximum UV index of 2 suggests this advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Girdwood, AK
- Average high temperature in August: 53.4°F
The warmest month (with the highest average high temperature) is July (56.8°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in August: 41.7°F
The month with the highest average low temperature is July (44.1°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in August
Girdwood, AK
- Average pressure in August: 29.87"Hg
The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is November (29.66"Hg).
Average wind speed in August
Girdwood, AK
- Average wind speed in August: 5mph
The windiest months (with the highest average wind speed) are November and December (5.9mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in August
Girdwood, AK
- Average humidity in August: 86%
The months with the highest relative humidity are March and December (92%).
The month with the lowest relative humidity is June (79%).
Average rainfall in August
Girdwood, AK
- Average rainfall in August: 2.68"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in August
Girdwood, AK
- Average rainfall days in August: 21.8 days
The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is February (6 days).
Average snowfall in August
Girdwood, AK
- Average snowfall in August: 0"
The month with the highest snowfall is December (9.57").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Girdwood, AK
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (17.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Girdwood, AK
- Average daylight in August: 15h and 42min
The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in August: 6h and 36min
The month with the most sunshine is May (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in August
Girdwood, AK
- Average sunshine days in August: 8 days
The month with the most sunshine days is January (14.2 days).
The month with the least sunshine days is August (8 days).
Average UV index in August
Girdwood, AK
- Average UV index in August: 2
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in August
Girdwood, AK
- Average cloud cover in August: 64
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is May (Cloud cover 55).
Average visibility in August
Girdwood, AK
- Average visibility in August: 5mi
The month with the highest visibility is June (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (4mi).
