August weather forecastWinthrop, WA
August
Weather in August
August continues the heated trend from July, asserting itself as part of Winthrop’s warmest months. Temperatures almost match the previous month, with a high at 75.9°F (24.4°C) and a low of 47.8°F (8.8°C). The month benefits from reduced humidity and a low average rainfall of 0.43" (11mm). Sunlight continues to dominate the sky, promising ample opportunities for outdoor activities. The transition towards September brings slightly cooler climate, but the warm weather still lingers.Temperature
The month of August, characterized by an average high of 75.9°F (24.4°C) and a low of 47.8°F (8.8°C), is recognized as the warmest.Humidity
The months with the lowest humidity in Winthrop, Washington, are July and August, with an average relative humidity of 53%.Rainfall
In Winthrop, during August, the rain falls for 6.1 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 142.6 rainfall days, and 17.91" (455mm) of precipitation is accumulated.Snowfall
In Winthrop, snow does not fall in May through August.Daylight
In Winthrop, the average length of the day in August is 14h and 16min.On the first day of August, sunrise is at 5:36 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:43 pm PDT.
Sunshine
The month with the most sunshine is August, with an average of 11.9h of sunshine.UV index
The average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 during August translates into the following guidance:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Winthrop, WA
- Average high temperature in August: 75.9°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).
- Average low temperature in August: 47.8°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).
Average pressure in August
Winthrop, WA
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).
Average wind speed in August
Winthrop, WA
- Average wind speed in August: 4.9mph
The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).
Average humidity in August
Winthrop, WA
- Average humidity in August: 53%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in August
Winthrop, WA
- Average rainfall in August: 0.43"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in August
Winthrop, WA
- Average rainfall days in August: 6.1 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in August
Winthrop, WA
- Average snowfall in August: 0"
The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in August
Winthrop, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Winthrop, WA
- Average daylight in August: 14h and 18min
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 24min).
- Average sunshine in August: 11h and 54min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Winthrop, WA
- Average sunshine days in August: 23 days
The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in August
Winthrop, WA
- Average UV index in August: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in August
Winthrop, WA
- Average cloud cover in August: 15
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in August
Winthrop, WA
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
