Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
In Custer, the peak average temperatures are observed in August, with a high of 70°F (21.1°C) and a low of 54.9°F (12.7°C).Humidity
The average relative humidity in August in Custer, Washington, is 76%.Rainfall
In Custer, in August, during 6.1 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. Throughout the year, there are 176.1 rainfall days, and 43.78" (1112mm) of precipitation is accumulated.Snowfall
In Custer, snow does not fall in May through October.Daylight
In Custer, Washington, the average length of the day in August is 14h and 19min.On the first day of August, sunrise is at 5:44 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:54 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.4h of sunshine.UV index
In Custer, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In August, the maximum UV index of 4 suggests this advice:
Ensure safety - Sun damage prevention is strongly urged. When the Sun is at its strongest around midday, find shade and limit exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the hottest time of year in Custer?
What are August temperatures in Custer?
What is the average humidity in August in Custer?
How many days does it rain in August in Custer?
When it does not snow in Custer?
How many hours of daylight does Custer have in August?
When are sunrise and sunset in August in Custer?
What is the month with the most sunshine in Custer?
How long on average sun shines in August in Custer?
What is the UV index reading in August in Custer?
Average temperature in August
Custer, WA
- Average high temperature in August: 70°F
The warmest month (with the highest average high temperature) is August (70°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in August: 54.9°F
The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is February (35.8°F).
Average pressure in August
Custer, WA
- Average pressure in August: 30.01"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in August
Custer, WA
- Average wind speed in August: 3.9mph
The windiest months (with the highest average wind speed) are November and December (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in August
Custer, WA
- Average humidity in August: 76%
The months with the highest relative humidity are January and November (83%).
The month with the lowest relative humidity is July (74%).
Average rainfall in August
Custer, WA
- Average rainfall in August: 1.06"
The wettest month (with the highest rainfall) is November (7.13").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in August
Custer, WA
- Average rainfall days in August: 6.1 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in August
Custer, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Custer, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Custer, WA
- Average daylight in August: 14h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in August: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in August
Custer, WA
- Average sunshine days in August: 23.2 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in August
Custer, WA
- Average UV index in August: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Custer, WA
- Average cloud cover in August: 26
The months with the most cloud cover are January and December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in August
Custer, WA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Custer, Washington, USA
Weather forecast for your location
2. Allow the app to use your location
