United StatesAverage weather for Potomac in May
It's warm in May in Potomac with an average temperature of 23°C. Temperatures this month range from a low of 18°C to a high of 28°C. At night, you can expect temperatures between 9°C and 18°C.
Start of May
The month of May starts in Potomac with mild temps, averaging around 21°C during the day and nights around 12°C. There are plenty of days with a good chance of precipitation.
Mid May
By mid-May, daytime temps rise to around 23°C, with nights around 13°C. There’s a high chance of precipitation during this time.
End of May
By the end of May, the average daytime temperature in Potomac is around 27°C, while nighttime temps are about 17°C. There’s a significant chance of many days with precipitation.
Because temperatures drop in the evening, wearing layers is recommended.
In May, there is an average of 264 mm of precipitation, spread over 12 days. The wind speed is around 3 Bft, mostly coming from the South.
Potomac in May |
New York | ||
|---|---|---|---|
 Average temperature |
23°C | 22°C | |
 Max. temperature |
28°C | 28°C | |
| Min. temperature |
18°C | -5°C | |
 Total precipitation |
264 mm | 105 mm | |
| Rainy days |
12 days | 14 days | |
April
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit Potomac?
Looking for sun? May isn’t a good month to be in Potomac. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 35°C in 2022, Potomac reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 8°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 24°C.
Check out the climate of Potomac for all months and discover the best travel time
Daily Temperature in May in Potomac
This chart shows the average daily high and low temperatures in May for Potomac, 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 Potomac
The chart below shows the average daily precipitation in May for Potomac, 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 12 days of precipitation in Potomac.
Daily UV index in May in Potomac
This chart shows the average daily UV index in May in Potomac, 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 Potomac over the years
This chart shows the average temperature in May in Potomac, measured in degrees Celsius, over the past few years.
Total precipitation in May in Potomac over the years
This chart shows the average precipitation in May in Potomac, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in May for Potomac
Click on any day in May to get detailed info about the usual weather on that day in Potomac. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Potomac
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Average weather in Potomac by month
Click on a month below to see detailed weather info for Potomac. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
