Climate Insights for Clatskanie

The climate in Clatskanie is temperate. The average annual temperature is 11°C and approximately 1549mm of precipitation falls per year. December is the wettest month, receiving around 253mm of rainfall. Clatskanie is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are December, February, January, when temperatures can drop to 3°C. Light snow can occur between January and December.

Temperatures in Clatskanie vary considerably across the year, with a 22°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 25°C with a mean of 18°C. December is the coolest month, with minimum temperatures around 3°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.

Clatskanie is a fairly wet location, receiving approximately 1549mm of precipitation annually, which averages out to around 129mm per month. The wettest month is December, averaging 253mm of rainfall. November and January also tend to see above-average precipitation. The driest month is July, with just 8mm. That's 245mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 33cm annually. February is the snowiest month with approximately 13cm.

Clatskanie is mildly breezy, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently spring in Clatskanie, which began on March 20, 2026. Clatskanie is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 25°C, while the coldest stretch bottoms out in December near 3°C. Summer is next, beginning on June 21, 2026 — 91 days from now.

The best time to visit Clatskanie is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 37mm per month. By contrast, December can be quite cold with temperatures dropping to 3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Clatskanie based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.