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Umatilla Weather in December

Thinking of visiting Umatilla in December? Expect low temperatures reaching 5°C (41°F) during the day, dropping to -3°C (27°F) at night, and be prepared for the wettest month of the year.

Rainfall in Umatilla in December

With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. On average, there are about 15 days with snow/rain during this month, averaging 35 mm (1.4 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Umatilla in December

December in Umatilla brings typical temperatures with highs around 5°C (41°F) and lows of -3°C (27°F). Winter occurs in December. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. At -3°C (27°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. It is the coldest month of the year, so be sure to pack proper winter clothing for the conditions.Pack accordingly with warm clothes.

December in Umatilla can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit the United States of America, check out our Umatilla's climate page.

Umatilla Temperature in December

Min TemperatureMin Temperature -3°C (27°F)  
Max TemperatureMax Temperature 5°C (41°F)  
Chance of RainChance of Rain 49%  
PrecipitationPrecipitation 35 mm (1.4 in)  
Rainy daysRainy days 15 days  

Best Places in the United States of America in December

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Umatilla in December

Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Pack a light rain jacket or compact umbrella for occasional showers.

What To Do in Umatilla in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling
3/10
Walking
3/10
Barbeque
1/10
Camping
2/10
Outdoor sports
3/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit the United States of America, check out our Umatilla's climate page.

More climate data for Umatilla