Winter 2023 weather forecast for Portland, OR

Prepare for winter weather with these seasonal temperature and precipitation outlooks.

A Portland street car makes its way through snowy conditions with the arch of the Fremont Bridge in the near background

Who needs a one-horse open sleigh when you have Portland Streetcar?

Photo by Steve Morgan

We know the question on your mind, Portlanders — when’s it going to snow again? Thanks to the National Oceanic and Atmospheric Administration’s Climate Prediction Center, we know what temperatures and precipitation trends to expect in our city for December, January, and February. While exact weather conditions typically can’t be predicted more than a week in advance, here’s a seasonal outlook to help you prepare for what winter will bring.

Reminder: The first day of winter is Wednesday, Dec. 21.

A map of the US shows probabilities for above and below average temperatures

Does all that blue make you feel blue?

Map via NOAA

🌡️ Temperature

Think cold. This winter, Portland has a 33-40% chance of temperatures being lower than normal, although the city sits very close to the line where that figure could jump to 40-50%.

🌨️ Precipitation

Expect slightly more precipitation. Portland has a 33-40% chance of seeing higher-than-average snow and rainfall totals this winter.

December

Generally, December is the coldest month of the year in Portland, with temperatures ranging between an average low of 34.7° and an average high of 44.1°. Snow records have already fallen this month — 0.1" was measured at the airport on Dec. 4 — but typical accumulation is just a meager 0.28". We’re still crossing our fingers for a white Christmas.

January

In January, the average high and low temps are between 46.2° and 35.2°. Your dry skin may beg to differ, but the average relative humidity in January is 83%, with just over 18 days and 4.33" of rainfall expected. If you tend to enjoy the warm orb in the sky, you might want to plan a vacation — with an average of 4.1 hours of sunshine a day, January has the least sunshine of the year.

February

Average temperatures fluctuate between 47.5° and 35.8° throughout February, which makes it an ideal time to enjoy indoor events like the Portland Jazz Festival or FAN EXPO Portland. You may have love in your eyes, but you won’t have to worry about the sun — the average UV index of 2 poses a low threat to health.

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