Climate Insights for Philomath

The climate in Philomath is temperate. The average annual temperature is 11°C and approximately 1533mm of precipitation falls per year. January is the wettest month, receiving around 260mm of rainfall. Philomath 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 2°C. Light snow can occur between January and December.

Temperatures in Philomath vary considerably across the year, with a 24°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 18°C. December is the coolest month, with minimum temperatures around 2°C and an average of 5°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.

Philomath is a fairly wet location, receiving approximately 1533mm of precipitation annually, which averages out to around 128mm per month. The wettest month is January, averaging 260mm of rainfall. November and December also tend to see above-average precipitation. The driest month is August, with just 5mm. That's 255mm less than January, 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 15cm.

Philomath is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Philomath, which began on June 21, 2026. Philomath 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 26°C, while the coldest stretch bottoms out in December near 2°C. Autumn is next, beginning on September 23, 2026 — 77 days from now.

The best time to visit Philomath is during 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 24mm per month. By contrast, December can be quite cold with temperatures dropping to 2°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Philomath 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.