Lake Oswego Weather in January

Lake Oswego in January averages 9°C (48°F) during the day and 2°C (36°F) at night. This is part of the winter season, and quite a bit of rainfall is expected this month.

Rainfall in Lake Oswego in January

The climate data from previous years indicates about 20 days of rain, averaging 160 mm (6.3 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Lake Oswego in January

Temperatures in Lake Oswego in January top out at 9°C (48°F) and drop to 2°C (36°F) overnight. January is typically considered a winter month. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. With overnight lows of 2°C (36°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Lake Oswego in January

The city usually sees around 86 hours of sunlight, indicating fewer sunny days.

Wind Speed in Lake Oswego in January

Wind speeds average 4 m/s (8 knots) during January. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Lake Oswego. Our weather planner can help you explore destinations with more pleasant weather conditions.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
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• 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 Lake Oswego's climate page.

Lake Oswego Temperature in January

Min Temperature 2°C (36°F)  

Max Temperature 9°C (48°F)  

Chance of Rain 65%  

Precipitation 160 mm (6.3 in)  

Rainy days 20 days  

Humidity 81% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 86 hours *  

Percentage Sunshine *  

* Data from: Portland, the United States of America (20 KM, 12 Miles).

What to Wear in Lake Oswego in January

Dress warmly and in layers for your trip to Lake Oswego in January. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. It's going to pour! Pack a good poncho and prepare for very wet conditions. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Lake Oswego in January

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

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

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 Lake Oswego's climate page.

More climate data for Lake Oswego

Temperature Rainfall Sunshine Humidity Wind Speed

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