Oregon, USA
Long term weather forecast
Long term weather forecast

August weather forecast and Climate
Sisters, OR

  • Average high temperature in August: 83.5°F

Warmest month (with highest average high temperature) is July (84.4°F).
Month with lowest average high temperature is December (40.5°F).

  • Average low temperature in August: 41.8°F

Month with highest average low temperature is July (42.4°F).
Coldest month (with lowest average low temperature) is December (20.9°F).

  • Average rainfall in August: 0.4"

Wettest month (with highest rainfall) is December (2.3").
Driest months (with lowest rainfall) are July, August and September (0.4").

  • Average rainfall days in August: 3 days

Month with highest number of rainy days is November (10 days).
Month with lowest number of rainy days is July (2 days).

  • Average snowfall in August: 0"

Month with highest snowfall is January (8.3").
Months with lowest snowfall are May, June, July, August and September (0").