April weather forecast
Manassas, VA

Weather in April

April is an enjoyable spring month in Manassas, Virginia, with average temperature varying between 45.9°F (7.7°C) and 65.7°F (18.7°C).

Temperature

In Manassas, Virginia, the average high-temperature in April rises, from a fresh 53.2°F (11.8°C) in March, to an enjoyable 65.7°F (18.7°C). In Manassas, Virginia,, the average low-temperature is 45.9°F (7.7°C).

Humidity

The average relative humidity in Manassas is 73%.

Rainfall

In Manassas, during 15.7 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Manassas, Virginia, during the entire year, the rain falls for 157.5 days and collects up to 30.35" (771mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.3 snowfall days, Manassas aggregates 0.43" (11mm) of snow. In Manassas, during the entire year, snow falls for 15.8 days, and aggregates up to 11.5" (292mm) of snow.

Daylight

The average length of the day in Manassas is 13.3h.

Sunshine

In April, the average sunshine is 9h.

UV index

In Manassas, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in April in Manassas?

The average relative humidity in April is 73%.

How many days does it rain in April in Manassas?

In Manassas, during April, the rain falls for 15.7 days and regularly aggregates up to 2.87" (73mm) of precipitation.

What is the last month it snows in Manassas?

April is the last month it regularly snows. During 0.3 snowfall days, in April, Manassas aggregates 0.43" (11mm) of snow.

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

In Manassas, Virginia, the average length of the day in April is 13.3h.

How long on average sun shines in April in Manassas?

In Manassas, the average sunshine in April is 9h.

What is the UV index intensity in April in Manassas?

In Manassas, Virginia, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in April
Manassas, VA

Average temperature in April - Manassas, VA
  • Average high temperature in April: 18.7°C

The warmest month (with the highest average high temperature) is July (31.3°C).
The month with the lowest average high temperature is January (4.8°C).

  • Average low temperature in April: 7.7°C

The month with the highest average low temperature is July (19.5°C).
The coldest month (with the lowest average low temperature) is January (-3.1°C).

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Average pressure in April
Manassas, VA

Average pressure in April - Manassas, VA
  • Average pressure in April: 1015.6mbar

The month with the highest atmospheric pressure is November (1020.7mbar).
The month with the lowest atmospheric pressure is June (1014.2mbar).

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Average wind speed in April
Manassas, VA

Average wind speed in April - Manassas, VA
  • Average wind speed in April: 11.2km/h

The windiest months (with the highest average wind speed) are March and April (11.2km/h).
The calmest month (with the lowest average wind speed) is August (7.4km/h).

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Average humidity in April
Manassas, VA

Average humidity in April - Manassas, VA
  • Average humidity in April: 73%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in April
Manassas, VA

Average rainfall in April - Manassas, VA
  • Average rainfall in April: 73mm

The wettest month (with the highest rainfall) is August (87mm).
The driest month (with the least rainfall) is September (49mm).

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Average rainfall days in April
Manassas, VA

Average rainfall days in April - Manassas, VA
  • Average rainfall days in April: 15.7 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in April
Manassas, VA

Average snowfall in April - Manassas, VA
  • Average snowfall in April: 11mm

The month with the highest snowfall is January (94mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in April
Manassas, VA

Average snowfall days in April - Manassas, VA
  • Average snowfall days in April: 0.3 days

The month with the highest number of snowfall days is February (5.2 days).
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
Manassas, VA

Average daylight in April / Average sunshine in April - Manassas, VA
  • Average daylight in April: 13.3h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in April: 9h

The month with the most sunshine is July (Average sunshine: 10.7h).
Months with the least sunshine are January, February and December (Average sunshine: 5.2).

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Average sunshine days in April
Manassas, VA

Average sunshine days in April - Manassas, VA
  • Average sunshine days in April: 12.9 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.7 days).

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Average UV index in April
Manassas, VA

Average UV index in April - Manassas, VA
  • Average UV index in April: 4

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Manassas, VA

Average cloud cover in April - Manassas, VA
  • Average cloud cover in April: 41

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in April
Manassas, VA

Average visibility in April - Manassas, VA
  • Average visibility in April: 9km

Months with the highest visibility are January, February, March, April, June, July, August and November (9km).
Months with the lowest visibility are May, September, October and December (8km).

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