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United States weather

Weather in Portland, Oregon for January 2026

Your guide to Portland weather in January - trends and predictions

    Official Weather Alert ⚠️

  • Air Stagnation Advisory - See hour by hour.

    • Snow Forecast ❄️

  • With an average of 2 snowy days, Portland usually enjoys a light touch of snow in January.
    According to Portland snow forecast for January 2026, no snow is expected until the end of the month.

    • Temperatures

  • So far, January 2026 in Portland is slightly warmer than the historical average by 0.9 °F.

  • The forecast for the upcoming days in Portland predicts a temperature of 9.6 °F, which is slightly above the historical average.

  • In general, the average temperature in Portland at the beginning of January is 7.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 9.6 °F by the end of January.

    • Rain 🌧️

  • Portland experiences heavy rainfall in January, with over 20 rainy days and an average total precipitation 176.9 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
7°/2°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
85 %
Avg humidity

Portland Weather January

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

Temperatures trend during January in Portland

See the weather trend as well as the moving average line

January weather in Portland day by day

Click on a date for more information
December February
Date Weather Temperatures Rain Snow More
Jan. 1 Overcast
Overcast
 7° /2° 6.9 mm 0 cm
Jan. 2 Patchy rain possible
Patchy rain possible
 8° /3° 14.1 mm 0 cm
Jan. 3 Moderate rain at times
Moderate rain at times
 9° /4° 16.9 mm 0 cm
Jan. 4 Moderate or heavy rain shower
Moderate or heavy rain shower
 8° /4° 4.6 mm 0 cm
Jan. 5 Moderate rain at times
Moderate rain at times
 8° /4° 3.9 mm 0 cm
Jan. 6 Moderate rain at times
Moderate rain at times
 8° /4° 10.4 mm 0 cm
Jan. 7 Moderate rain at times
Moderate rain at times
 7° /3° 13.2 mm 0 cm
Jan. 8 Moderate or heavy rain shower
Moderate or heavy rain shower
 7° /2° 8.1 mm 0 cm
Jan. 9 Fog
Fog
 9° /3° 7.7 mm 0 cm
Jan. 10 Overcast
Overcast
 8° /2° 9.5 mm 0 cm
Jan. 11 Fog
Fog
 7° /3° 4.3 mm 0 cm
Jan. 12 Moderate or heavy rain shower
Moderate or heavy rain shower
 8° /2° 9 mm 1.4 cm
Jan. 13 Moderate rain at times
Moderate rain at times
 3° /-2° 7.6 mm 4.5 cm
Jan. 14 Heavy rain at times
Heavy rain at times
 4° /-1° 1.7 mm 0.1 cm
Jan. 15 Fog
Fog
 5° /-2° 5 mm 0 cm
Jan. 16 Moderate rain at times
Moderate rain at times
 3° /-2° 1.7 mm 0 cm
Jan. 17 Patchy rain possible
Patchy rain possible
 6° /0° 2.8 mm 0 cm
Jan. 18 Moderate or heavy rain shower
Moderate or heavy rain shower
 7° /0° 14.3 mm 0 cm
Jan. 19 Patchy rain possible
Patchy rain possible
 5° /0° 0.7 mm 0 cm
Jan. 20 Sunny
Sunny
 6° /-1° 0 mm 0 cm
Jan. 21 Sunny
Sunny
 9° /-1° 0 mm 0 cm
Jan. 22 Partly cloudy
Partly cloudy
 6° /-1° 0 mm 0 cm
Jan. 23 Sunny
Sunny
 8° /-1° 0 mm 0 cm
Jan. 24 Sunny
Sunny
 9° /-2° 0 mm 0 cm
Jan. 25 Overcast
Overcast
 7° /-1° 0 mm 0 cm
Jan. 26 Cloudy
Cloudy
 9° /2° 0 mm 0 cm
Jan. 27 Sunny
Sunny
 10° /1° 0 mm 0 cm
Jan. 28 Patchy rain possible
Patchy rain possible
 8° /2° 0.4 mm 0 cm
Jan. 29 Partly cloudy
Partly cloudy
 12° /5° 0 mm 0 cm
Jan. 30 Partly cloudy
Partly cloudy
 10° /4° 0 mm 0 cm
Jan. 31 Cloudy
Cloudy
 11° /3° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Portland in January 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 Portland forecast closer to your planned date for the most up-to-date weather information.
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Portland in January - FAQ

What are the expected maximum and minimum temperatures in Portland during January?

Prepare for cooler days with highs just around 7° and colder nights, dipping below 2°.

How much rainfall should be expected in Portland during January?

Significant rainfall exceeding 176.9 mm is expected in Portland during January, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Portland in January 2026?

Portland experiences an average snowfall of 7.98333 cm during January, occurring over 2 days.

What are the typical wind conditions in Portland during January?

The average wind speed in Portland during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

Portland snow forecast January 2026

Track daily snowfall levels and discover Portland’s snowy potential this January ❄️
On average, Portland sees 2 snowy days during January, with approximately 8 cm of total snowfall.

January rainfall patterns in Portland

Explore the daily rainfall trends and prepare for Portlands January weather 💧
Typically, Portland has 26 rainy days in January with a total of 176.9 mm of rainfall.

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

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