Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
Rockville's transition into April brings a rise in the average high-temperature, moving from a fresh 52°F (11.1°C) in March to an enjoyable 64.4°F (18°C). During April, the temperature tends to dip to an average of 45.9°F (7.7°C) at night.Humidity
The average relative humidity in April is 72%.Rainfall
In April, the rain falls for 14.4 days. Throughout April, 2.56" (65mm) of precipitation is accumulated. In Rockville, during the entire year, the rain falls for 156.4 days and collects up to 30.79" (782mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.2 snowfall days, in April, Rockville aggregates 0.28" (7mm) of snow. Throughout the year, in Rockville, there are 17.7 snowfall days, and 9.92" (252mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 15min.On the first day of April, sunrise is at 6:51 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:00 pm EDT.
Sunshine
In Rockville, the average sunshine in April is 8.9h.UV index
The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During April, 4 as the daily maximum UV index converts into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
How many hours of daylight does Rockville have in April?
When are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Rockville, MD
- Average high temperature in April: 64.4°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in April: 45.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in April
Rockville, MD
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in April
Rockville, MD
- Average wind speed in April: 7.8mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in April
Rockville, MD
- Average humidity in April: 72%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).
Average rainfall in April
Rockville, MD
- Average rainfall in April: 2.56"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in April
Rockville, MD
- Average rainfall days in April: 14.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in April
Rockville, MD
- Average snowfall in April: 0.28"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Rockville, MD
- Average snowfall days in April: 0.2 days
The months with the highest number of snowfall days are January and February (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Rockville, MD
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in April
Rockville, MD
- Average sunshine days in April: 13.9 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (12 days).
Average UV index in April
Rockville, MD
- Average UV index in April: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Rockville, MD
- Average cloud cover in April: 41
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in April
Rockville, MD
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Rockville, Maryland, USA
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