Aberdeen (WA) Temperature by Month

Aberdeen, Washington State, United States of America has an average annual maximum temperature of 15°C (59°F), ranging from 8°C (46°F) in December to 22°C (72°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

In Aberdeen, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 12°C (54°F) in August to 2°C (36°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Aberdeen by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.

The chart below shows the average temperature throughout the year:

Aberdeen's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Aberdeen's weather, including monthly rainfall, sunshine hours, and humidity, visit our Aberdeen climate page.