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Weather in Multnomah County, Oregon for December 2025

Your guide to Multnomah County weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 2 snowy days, Multnomah County usually enjoys a light touch of snow in December.
    According to Multnomah County snow forecast for December 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, December 2025 in Multnomah County has been nearly identical to the historical average, with a temperature of 9.7 °F (showing only a slight deviation of 0.5 °F).

  • Expect cooler weather in the next days in Multnomah County with the forecast suggesting a temperature of 7.3 °F, lower than the historical average.

  • In general, the average temperature in Multnomah County at the beginning of December is 9.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 6 °F by the end of December.

    • Rain 🌧️

  • Multnomah County experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 408.9 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
3
Dry days
Average rainy days
26
Rainy days
Average snowy days
2
Snow days
Average temperatures
8°/4°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
87 %
Avg humidity

Multnomah County Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate rain
8°
2
Light rain shower
9°
3
Heavy rain
9°
4
Light rain
10°
5
Heavy rain
10°
6
Overcast
10°
7
Light rain shower
9°
8
Fog
9°
9
Moderate rain
8°
10
Moderate rain
10°
11
Light drizzle
10°
12
Mist
9°
13
Partly cloudy
9°
14
Patchy rain possible
8°
15
Overcast
10°
16
Moderate or heavy rain shower
9°
17
Moderate rain
8°
18
Heavy rain
12°
19
Heavy rain
6°
20
Patchy rain possible
7°
21
Patchy rain possible
11°
22
Moderate rain
9°
23
Patchy rain possible
7°
24
Patchy rain possible
7°
25
Partly cloudy
7°
26
Moderate rain
6°
27
Moderate rain
5°
28
Moderate rain
8°
29
Moderate rain
4°
30
Patchy rain possible
5°
31
Fog
7°

Temperatures trend during December in Multnomah County

See the weather trend as well as the moving average line

December weather in Multnomah County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Moderate rain
Moderate rain
 8° /1° 2 mm 2
Dec. 2 Light rain shower
Light rain shower
 9° /4° 14.7 mm 2
Dec. 3 Heavy rain
Heavy rain
 9° /3° 21.3 mm 2
Dec. 4 Light rain
Light rain
 10° /5° 1.7 mm 3
Dec. 5 Heavy rain
Heavy rain
 10° /5° 25 mm 3
Dec. 6 Overcast
Overcast
 10° /5° 16.5 mm 3
Dec. 7 Light rain shower
Light rain shower
 9° /6° 25.4 mm 2
Dec. 8 Fog
Fog
 9° /6° 21.4 mm 2
Dec. 9 Moderate rain
Moderate rain
 8° /4° 49.9 mm 2
Dec. 10 Moderate rain
Moderate rain
 10° /5° 11.9 mm 2
Dec. 11 Light drizzle
Light drizzle
 10° /6° 0.6 mm 2
Dec. 12 Mist
Mist
 9° /5° 2.6 mm 2
Dec. 13 Partly cloudy
Partly cloudy
 9° /6° 5.6 mm 2
Dec. 14 Patchy rain possible
Patchy rain possible
 8° /5° 8.8 mm 2
Dec. 15 Overcast
Overcast
 10° /6° 2.1 mm 2
Dec. 16 Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /5° 20.1 mm 2
Dec. 17 Moderate rain
Moderate rain
 8° /6° 10.6 mm 0.1
Dec. 18 Heavy rain
Heavy rain
 12° /4° 57 mm 0
Dec. 19 Heavy rain
Heavy rain
 6° /4° 21.4 mm 0.1
Dec. 20 Patchy rain possible
Patchy rain possible
 7° /3° 0.5 mm 0.2
Dec. 21 Patchy rain possible
Patchy rain possible
 11° /3° 2.8 mm 0
Dec. 22 Moderate rain
Moderate rain
 9° /6° 6.8 mm 2
Dec. 23 Patchy rain possible
Patchy rain possible
 7° /4° 2.1 mm 2
Dec. 24 Patchy rain possible
Patchy rain possible
 7° /4° 0.2 mm 1
Dec. 25 Partly cloudy
Partly cloudy
 7° /2° 0 mm 2
Dec. 26 Moderate rain
Moderate rain
 6° /3° 5.6 mm 1
Dec. 27 Moderate rain
Moderate rain
 5° /4° 5.4 mm 1
Dec. 28 Moderate rain
Moderate rain
 8° /4° 11.4 mm 2
Dec. 29 Moderate rain
Moderate rain
 4° /2° 10.6 mm 1
Dec. 30 Patchy rain possible
Patchy rain possible
 5° /1° 0.1 mm 1
Dec. 31 Fog
Fog
 7° /3° 1.3 mm 2
Next
Important Notice
Our weather forecast for Multnomah County in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Multnomah County forecast closer to your planned date for the most up-to-date weather information.
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Multnomah County in December - FAQ

What are the expected maximum and minimum temperatures in Multnomah County during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 4°.
How much rainfall should be expected in Multnomah County during December?
Significant rainfall exceeding 408.9 mm is expected in Multnomah County during December, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Multnomah County in December 2025?
Multnomah County experiences an average snowfall of 1.75667 cm during December, occurring over 2 days.
What are the typical wind conditions in Multnomah County during December?
The average wind speed in Multnomah County during December is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Multnomah County

Explore the daily rainfall trends and prepare for Multnomah Countys December weather 💧
Typically, Multnomah County has 26 rainy days in December with a total of 408.9 mm of rainfall.
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Location coordinates Where is Multnomah County?

Get accurate weather forecasts for Multnomah County, located at latitude 45.523 and longitude -122.676. Stay updated with localized weather information tailored for Multnomah County.

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