Portland Weather in December

Portland in December averages 4°C (39°F) during the day and -4°C (25°F) at night. This is part of the winter season, and quite a bit of snow/rainfall is expected this month.

Rainfall in Portland in December

Analyzing past climate data, one can expect approximately 13 days of snow/rain, averaging 94 mm (3.7 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Portland in December

If you're visiting Portland in December, expect highs of 4°C (39°F) and overnight lows around -4°C (25°F). Winter occurs in December. Expect a distinctly cold feel throughout the day, not just overnight. At -4°C (25°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. Known for its cold temperatures, this month requires warm clothing. Ensure you dress appropriately to stay comfortable.

Sunshine in Portland in December

The month experiences a moderate amount of sunlight, with 106 hours of sunshine. This provides a nice balance between sunshine and clouds.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Portland. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Portland Temperature in December

Min Temperature -4°C (25°F)  

Max Temperature 4°C (39°F)  

Chance of Rain 43%  

Precipitation 94 mm (3.7 in)  

Rainy days 13 days  

Humidity 77% *  

Sunshine 106 hours *  

Percentage Sunshine 38% *  

* Data from: Fort Wayne, the United States of America (73 KM, 45 Miles).

What to Wear in Portland in December

We recommend to layer up for chilly conditions in Portland in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Portland in December

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

Swimming

5/10

Cycling

3/10

Walking

3/10

Camping

1/10

Outdoor sports

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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

More climate data for Portland

Temperature Rainfall Sunshine Humidity

See the full Portland climate overview or explore weather in the United States of America.