Washington Weather in May

The climate in Washington during May can be summarized as mild and damp.

May is in the spring in Washington and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 11°C (51°F) is normal.

On average May is the 3rd wettest month of the year in Washington with around 101mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.5 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 Washington in May 2024.