Cornelius

Thurston County, Oregon, United States

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Current Weather

15°

Overcast

Feels Like: 14°

Min: 11°

Max: 20°

The next few hours will be overcast, with today reaching 20°C and dropping to 13°C. The coming days will be drizzle

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Hourly Forecast

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Daylight Hours

06:57

Sunrise

19:15

Sunset

12 hours 18 minutes of sunlight today

Moon

Waxing Crescent

12:13

Moonrise

20:36

Moonset

Daily Forecast

Today

11°
20°

Wednesday

21°

Thursday

18°

Friday

15°

Saturday

14°

Sunday

15°

Monday

15°

Tuesday

16°

Wednesday

19°

Thursday

21°

Air Quality Data Available

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UV Index

No protection needed
1 Low
Low Extreme

Humidity

64% Comfortable
Low High

Weather in Cornelius today, September 15, 2026

Cornelius stays under cloudy skies on September 15, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The first half of the day looks overcast, as cloud amounts reach about 100% around 09:00. Brighter weather, if it comes, waits until later.

The temperature range runs from about 11°C up to 20°C. Expect humidity between 48% and 84%, most humid near 23:00. Expect gentle winds, highest near 11:00 at 3.6 km/h.

Through the afternoon cloud remains the main feature, with cover near 100% around 16:00. Bright spells should stay limited even as the day wears on. Visibility stays near 16.1 km. Expect sunrise at 06:57, sunset at 19:15, and 12 hours 18 minutes of sunlight today overall.

The practical takeaway for Cornelius on September 15, 2026 is a cloudy day that stays usable, just not particularly bright, around 20°C.

Frequently asked questions about weather in Cornelius

How warm does it get in Cornelius?

The warmest month in Cornelius is August, with average high temperatures of 29°C. The average temperature during this period is around 21°C.

How cold does it get in Cornelius?

The coldest month in Cornelius is February, with average low temperatures of 2°C. The average temperature during this period is around 5°C.

What is the wettest time of year in Cornelius?

The wettest month in Cornelius is December, with an average of 199mm of precipitation.

What is the driest time of year in Cornelius?

The driest month in Cornelius is July, with an average of 5mm of precipitation.

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Metric (°C, km/h)