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

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  • The average high temperature in December: 42.1°F

The warmest month (with the highest average high temperature) is July (92.6°F).
The month with the lowest average high temperature is January (40°F).

  • The average low temperature in December: 28.4°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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  • The average rainfall in December: 1.1"

Wettest months (with the highest rainfall) are January, November and December (1.1").
The driest month (with the lowest rainfall) is July (0.2").

  • The average rainfall days in December: 8 days

Months with the highest number of rainy days are January and December (8 days).
The month with the lowest number of rainy days is July (1 days).

  • The average snowfall in December: 1.1"

The month with the highest snowfall is January (3.9").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

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