Sisters
Oregon, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and Climate
Sisters, OR

  • The average high temperature in December: 4.7°C

The warmest month (with the highest average high temperature) is July (29.1°C).
The month with the lowest average high temperature is December (4.7°C).

  • The average low temperature in December: -6.2°C

The month with the highest average low temperature is July (5.8°C).
The coldest month (with the lowest average low temperature) is December (-6.2°C).

  • The average rainfall in December: 57.7mm

The wettest month (with the highest rainfall) is December (57.7mm).
The driest month (with the lowest rainfall) is July (9.7mm).

  • The average rainfall days in December: 9 days

The month with the highest number of rainy days is November (10 days).
The month with the lowest number of rainy days is July (2 days).

  • The average snowfall in December: 200.7mm

The month with the highest snowfall is January (210.8mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

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