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 Sisters, the average high-temperature in August is relatively the same as in July - a still warm 78.4°F (25.8°C). In August, in Sisters, Oregon, the average low-temperature is 50.7°F (10.4°C).Humidity
July and August, with an average relative humidity of 53%, are the least humid months in Sisters.Rainfall
In August, the rain falls for 6.1 days. Throughout August, 0.51" (13mm) of precipitation is accumulated. In Sisters, during the entire year, the rain falls for 142.1 days and collects up to 22.87" (581mm) of precipitation.Snowfall
June through August are months without snowfall in Sisters.Daylight
The average length of the day in August in Sisters is 13h and 58min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:31 pm. On the last day of August, in Sisters, Oregon, sunrise is at 6:28 am and sunset at 7:44 pm PDT.
Sunshine
In August, the average sunshine is 11.8h.UV index
In Sisters, the average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 4 in August transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
FAQ
What is the temperature in August in Sisters?
What are the least humid months in Sisters?
What is the average humidity in August in Sisters?
How much does it rain in Sisters in August?
When it does not snow in Sisters?
Does it snow in Sisters in August?
How many hours of daylight does Sisters have in August?
When are sunrise and sunset in August in Sisters?
How long on average sun shines in August in Sisters?
What is the UV index intensity in August in Sisters?
Average temperature in August
Sisters, OR
- Average high temperature in August: 78.4°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in August: 50.7°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in August
Sisters, OR
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in August
Sisters, OR
- Average wind speed in August: 4.8mph
The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).
Average humidity in August
Sisters, OR
- Average humidity in August: 53%
The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in August
Sisters, OR
- Average rainfall in August: 0.51"
The wettest month (with the highest rainfall) is January (3.31").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in August
Sisters, OR
- Average rainfall days in August: 6.1 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is July (5 days).
Average snowfall in August
Sisters, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Sisters, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Sisters, OR
- Average daylight in August: 13h and 58min
The month with the longest days is June (Average daylight: 15h and 28min).
The month with the shortest days is December (Average daylight: 8h and 55min).
- Average sunshine in August: 11h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in August
Sisters, OR
- Average sunshine days in August: 21.8 days
The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is March (8.1 days).
Average UV index in August
Sisters, OR
- Average UV index in August: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in August
Sisters, OR
- Average cloud cover in August: 12
The months with the most cloud cover are January, February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in August
Sisters, OR
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
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