United StatesAverage weather for Rockville in May
It's warm in May in Rockville with an average temperature of 26°C. Temperatures this month range from a low of 23°C to a high of 31°C. At night, you can expect temperatures between 6°C and 12°C.
Start of May
The month of May starts in Rockville with warm temps, averaging around 25°C during the day and nights around 8°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
Mid May
By mid-May, daytime temps rise to around 27°C, with nights around 8°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of May
By the end of May, the average daytime temperature in Rockville is around 28°C, while nighttime temps are about 10°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
In May, there is an average of 18 mm of precipitation, spread over 3 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Rockville in May |
New York | ||
|---|---|---|---|
 Average temperature |
26°C | 22°C | |
 Max. temperature |
31°C | 28°C | |
| Min. temperature |
23°C | -5°C | |
 Total precipitation |
18 mm | 105 mm | |
| Rainy days |
3 days | 14 days | |
April
UV index
The UV index is a maximum of 7 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 Rockville?
Looking for great weather? May is a good time to be in Rockville. The temperatures are nice, and there’s little chance of rain this month.
Temperature records
With 38°C in 2020, Rockville reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 11°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of -3°C to a highest value of 18°C.
Check out the climate of Rockville for all months and discover the best travel time
Daily Temperature in May in Rockville
This chart shows the average daily high and low temperatures in May for Rockville, 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 Rockville
The chart below shows the average daily precipitation in May for Rockville, 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 3 days of precipitation in Rockville.
Daily UV index in May in Rockville
This chart shows the average daily UV index in May in Rockville, 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 Rockville over the years
This chart shows the average temperature in May in Rockville, measured in degrees Celsius, over the past few years.
Total precipitation in May in Rockville over the years
This chart shows the average precipitation in May in Rockville, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in May for Rockville
Click on any day in May to get detailed info about the usual weather on that day in Rockville. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Rockville
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Average weather in Rockville by month
Click on a month below to see detailed weather info for Rockville. 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 Rockville for all months at once
