April weather forecast
Rockville, MD

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Weather in April

April, representing spring in its full form, embraces Rockville with a mix of consistent rainfall and warm weather. The temperatures normally range from a maximum of 64.4°F (18°C) to a minimum of 45.9°F (7.7°C), showcasing a marked increase from March. This season generally calls for lighter clothing to accommodate the higher temperatures. The city also experiences a significant increase in daylight hours, allowing locals and visitors more time to enjoy the inviting outdoors.

Temperature

With the onset of April, the average high-temperature slightly shifts from March's fresh 52°F (11.1°C) to an enjoyable 64.4°F (18°C). In Rockville, the expected average low-temperature for April is a frosty 45.9°F (7.7°C).

Humidity

In April, the average relative humidity is 72%.

Rainfall

In Rockville, in April, during 14.4 rainfall days, 2.56" (65mm) of precipitation is typically 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 in Rockville. April is the last month it regularly snows in Rockville. 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 in Rockville is 13h and 15min.
On the first day of the month, sunrise is at 6:51 am and sunset at 7:32 pm. On the last day of April, in Rockville, sunrise is at 6:10 am and sunset at 8:00 pm EDT.

Sunshine

In April, the average sunshine in Rockville is 8.9h.

UV index

In Rockville, Maryland, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 4 during April morphs into the following directions:
Guard yourself - Precautionary measures against sun damage are advocated. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

What is the usual temperature for Rockville in April?

The high-temperature in Rockville, Maryland, during April is 64.4°F (18°C) and the low-temperature is 45.9°F (7.7°C).

What is the average humidity in April in Rockville?

In Rockville, Maryland, the average relative humidity in April is 72%.

How much does it rain in Rockville in April?

In April, in Rockville, the rain falls for 14.4 days. Throughout April, 2.56" (65mm) of precipitation is accumulated.

What is the last month it snows in Rockville?

April is the last month it regularly snows. During 0.2 snowfall days, in April, Rockville aggregates 0.28" (7mm) of snow.

What is the average length of the day in April in Rockville?

In April, the average day length is 13h and 15min.

When are sunrise and sunset in April in Rockville?

In April, on the first day of the month, sunrise is at 6:51 am and sunset at 7:32 pm. On the last day of the month, in Rockville, sunrise is at 6:10 am and sunset at 8:00 pm EDT.

How long on average sun shines in April in Rockville?

In April, the average sunshine duration in Rockville is 8.9h.

What is the UV index intensity in April in Rockville?

In April, the average daily maximum UV index in Rockville is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Rockville, MD

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).

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Average pressure in April
Rockville, MD

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).

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Average wind speed in April
Rockville, MD

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).

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Average humidity in April
Rockville, MD

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%).

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Average rainfall in April
Rockville, MD

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").

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Average rainfall days in April
Rockville, MD

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).

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Average snowfall in April
Rockville, MD

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").

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Average snowfall days in April
Rockville, MD

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).

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Average daylight in April /
Average sunshine in April
Rockville, MD

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).

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Average sunshine days in April
Rockville, MD

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).

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Average UV index in April
Rockville, MD

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).

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Average cloud cover in April
Rockville, MD

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).

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Average visibility in April
Rockville, MD

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).

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Rockville, Maryland, USA

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