August weather forecastMosier, OR
August
Weather in August
August, the last month of the summer in Mosier, is another warm month, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 51.4°F (10.8°C).Temperature
August, known for its average high temperature of 78.4°F (25.8°C) and an average low temperature of 51.4°F (10.8°C), is the warmest month.Humidity
The average relative humidity in August is 60%.Rainfall
In August, the rain falls for 4.2 days. Throughout August, 0.39" (10mm) of precipitation is accumulated. Throughout the year, in Mosier, there are 159.7 rainfall days, and 31.42" (798mm) of precipitation is accumulated.Snowfall
In Mosier, snow does not fall in April through October.Daylight
The average length of the day in August is 14h and 4min.On the first day of August, sunrise is at 5:50 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:44 pm PDT.
Sunshine
In Mosier, Oregon, the average sunshine in August is 11.6h.UV index
The average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 4 in August transforms into this advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Mosier, OR
- Average high temperature in August: 78.4°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in August: 51.4°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in August
Mosier, OR
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in August
Mosier, OR
- Average wind speed in August: 5.4mph
The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in August
Mosier, OR
- Average humidity in August: 60%
The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (59%).
Average rainfall in August
Mosier, OR
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is January (5.67").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in August
Mosier, OR
- Average rainfall days in August: 4.2 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (4.2 days).
Average snowfall in August
Mosier, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Mosier, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (4.1 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
Mosier, OR
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 11h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Mosier, OR
- Average sunshine days in August: 24.4 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (8.4 days).
Average UV index in August
Mosier, OR
- 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
Mosier, OR
- Average cloud cover in August: 17
The months with the most cloud cover are January and February (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in August
Mosier, OR
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).





