June weather forecast
Manassas, VA

Weather in June

The first month of the summer, June, is still a warm month in Manassas, Virginia, with average temperature ranging between min 62.8°F (17.1°C) and max 83.7°F (28.7°C).

Temperature

In Manassas, the average high-temperature in June marginally rises, from a moderately hot 75.4°F (24.1°C) in May, to a still warm 83.7°F (28.7°C). In Manassas, in June, the average low-temperature is 62.8°F (17.1°C).

Heat index

The average heat index is estimated at a tropical 90.7°F (32.6°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, metabolic differences, and clothing affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In June, the average relative humidity in Manassas, Virginia, is 73%.

Rainfall

In June, the rain falls for 14.3 days. Throughout June, 2.64" (67mm) of precipitation is accumulated. Throughout the year, in Manassas, there are 157.5 rainfall days, and 30.35" (771mm) of precipitation is accumulated.

Snowfall

In Manassas snow does not fall in May through October.

Daylight

The month with the longest days in Manassas, Virginia, is June, with an average of 14.8h of daylight.

Sunshine

In June, the average sunshine is 10.3h.

UV index

Months with the highest UV index in Manassas are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in June in Manassas?

In Manassas, Virginia, in June, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 62.8°F (17.1°C). In June, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is estimated at 90.7°F (32.6°C).

What is the average humidity in June in Manassas?

In Manassas, Virginia, the average relative humidity in June is 73%.

How many days does it rain in June in Manassas?

In Manassas, Virginia, in June, during 14.3 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow in Manassas?

In Manassas snow does not fall in May through October.

When are the longest days in Manassas?

June has the longest days of the year in Manassas, Virginia, with an average of 14.8h of daylight.

How many hours of daylight does Manassas have in June?

In June, the average length of the day in Manassas is 14.8h.

How many hours of sunshine does Manassas have in June?

In June, the average sunshine in Manassas is 10.3h.

When is the highest UV index in Manassas?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Manassas.

What is the UV index reading in June in Manassas?

In June, the average daily maximum UV index in Manassas is 6. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.

Average temperature in June
Manassas, VA

Average temperature in June - Manassas, VA
  • Average high temperature in June: 28.7°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 June: 17.1°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 June
Manassas, VA

Average pressure in June - Manassas, VA
  • Average pressure in June: 1014.2mbar

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 June
Manassas, VA

Average wind speed in June - Manassas, VA
  • Average wind speed in June: 8.5km/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 June
Manassas, VA

Average humidity in June - Manassas, VA
  • Average humidity in June: 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 June
Manassas, VA

Average rainfall in June - Manassas, VA
  • Average rainfall in June: 67mm

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 June
Manassas, VA

Average rainfall days in June - Manassas, VA
  • Average rainfall days in June: 14.3 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 June
Manassas, VA

Average snowfall in June - Manassas, VA
  • Average snowfall in June: 0mm

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

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Average snowfall days in June
Manassas, VA

Average snowfall days in June - Manassas, VA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (5.2 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 June /
Average sunshine in June
Manassas, VA

Average daylight in June / Average sunshine in June - Manassas, VA
  • Average daylight in June: 14.8h

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 June: 10.3h

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

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Average sunshine days in June
Manassas, VA

Average sunshine days in June - Manassas, VA
  • Average sunshine days in June: 13.9 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 June
Manassas, VA

Average UV index in June - Manassas, VA
  • Average UV index in June: 6

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 June
Manassas, VA

Average cloud cover in June - Manassas, VA
  • Average cloud cover in June: 34

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 June
Manassas, VA

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

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

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