Wilsonville
Oregon, USA
Long-term weather forecast
Long-term weather forecast
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December weather forecast and Climate
Wilsonville, OR

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  • The average high temperature in December: 46°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (46°F).

  • The average low temperature in December: 34°F

Months with the highest average low temperature are July and August (55°F).
The coldest month (with the lowest average low temperature) is December (34°F).

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  • The average rainfall in December: 6.6"

Wettest months (with the highest rainfall) are November and December (6.6").
Driest months (with the lowest rainfall) are July and August (0.6").

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