United StatesAverage weather for Washington D.C. in May
It's warm in May in Washington D.C. with an average temperature of 26°C. Temperatures this month range from a low of 20°C to a high of 29°C. At night, you can expect temperatures between 10°C and 19°C.
Start of May
The month of May starts in Washington D.C. with warm temps, averaging around 24°C during the day and nights around 13°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid May
By mid-May, daytime temps rise to around 25°C, with nights around 15°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of May
By the end of May, the average daytime temperature in Washington D.C. is around 28°C, while nighttime temps are about 18°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Because temperatures drop in the evening, wearing layers is recommended.
In May, there is an average of 117 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the South.
Washington D.C. in May |
New York | ||
|---|---|---|---|
 Average temperature |
26°C | 22°C | |
 Max. temperature |
29°C | 28°C | |
| Min. temperature |
20°C | -5°C | |
 Total precipitation |
117 mm | 105 mm | |
| Rainy days |
10 days | 14 days | |
April
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is May a good time to visit Washington D.C.?
Looking for sun? May isn’t a good month to be in Washington D.C.. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 35°C in 2022, Washington D.C. reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 10°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 24°C.
Check out the climate of Washington D.C. for all months and discover the best travel time
Curious about the weather in other parts of United States? Check out the climate and weather for spots like New York City, Miami, Los Angeles, or explore other destinations in United States.
Daily Temperature in May in Washington D.C.
This chart shows the average daily high and low temperatures in May for Washington D.C., in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in Washington D.C.
The chart below shows the average daily precipitation in May for Washington D.C., measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 10 days of precipitation in Washington D.C..
Daily UV index in May in Washington D.C.
This chart shows the average daily UV index in May in Washington D.C., with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in Washington D.C. over the years
This chart shows the average temperature in May in Washington D.C., measured in degrees Celsius, over the past few years.
Total precipitation in May in Washington D.C. over the years
This chart shows the average precipitation in May in Washington D.C., measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in May for Washington D.C.
Click on any day in May to get detailed info about the usual weather on that day in Washington D.C.. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Washington D.C.
The weather in May in Washington D.C. is rated 0 out of 5 stars by 1 visitor. Have you been to Washington D.C.? Share your weather experience to help other visitors.
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Average weather in Washington D.C. by month
Click on a month below to see detailed weather info for Washington D.C.. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Washington D.C. for all months at once
