Ashburn Weather in May

The climate in Ashburn during May can be summarized as warm, humid and a little damp.

May is in the spring in Ashburn and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (86°F), whilst at night 15°C (59°F) is normal.

On average May is the 4th driest month of the year in Ashburn with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.6 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Ashburn in May 2025.