June weather forecast
Manassas, VA

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Weather in June

June signals the onset of summer in Manassas, with sharp spikes in temperature making this month noticeably hotter than May. Warmer temperatures between 83.7°F (28.7°C) and 62.8°F (17.1°C) mark the hottest days of the year so far. The days continue to elongate, and sunshine prevails for the majority of the day, earning this month the distinction of having the longest daylight period of the year. Despite the heat, rainfall persists, albeit at a reduced intensity and frequency. As June gives the city its first taste of summer, residents prepare to endure the peak heat of the following months.

Temperature

Manassas's transition into June is marked by a minor temperature shift, moving from 75.4°F (24.1°C) in May to a still warm 83.7°F (28.7°C). During the month of June, Manassas's nighttime temperature lowers to an average of 62.8°F (17.1°C).

Heat index

The average heat index in June is evaluated at a hot 91.4°F (33°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
The standards for the heat index are set for locations in shade and under light breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

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

Rainfall

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

With an average of 14h and 48min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 5:46 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:38 pm EDT.

Sunshine

The average sunshine in June in Manassas, Virginia, is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in June transforms into this advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Manassas in June?

In Manassas, 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). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in June is evaluated at 91.4°F (33°C).

What is the average humidity in June in Manassas?

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

How many days does it rain in June in Manassas?

In June, in Manassas, the rain falls for 14.3 days. Throughout June, 2.64" (67mm) of precipitation is accumulated.

When it does not snow in Manassas?

May through October are months without snowfall.

When are the longest days in Manassas?

The month with the longest days in Manassas, Virginia, is June, with an average of 14h and 48min of daylight.

How many hours of daylight does Manassas have in June?

In June, the average day length in Manassas is 14h and 50min.

When are sunrise and sunset in June in Manassas?

In June, on the first day of the month, sunrise is at 5:46 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:38 pm EDT.

How long on average sun shines in June in Manassas?

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

What are the months with the highest UV index in Manassas?

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

What is the UV index intensity in June in Manassas?

The average daily maximum UV index in June in Manassas is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Manassas, VA

Average temperature in June - Manassas, VA
  • Average high temperature in June: 83.7°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in June: 62.8°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

Average pressure in June
Manassas, VA

Average pressure in June - Manassas, VA
  • Average pressure in June: 29.95"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 June
Manassas, VA

Average wind speed in June - Manassas, VA
  • Average wind speed in June: 5.3mph

The windiest months (with the highest average wind speed) are March and April (7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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%).

Average rainfall in June
Manassas, VA

Average rainfall in June - Manassas, VA
  • Average rainfall in June: 2.64"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").

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).

Average snowfall in June
Manassas, VA

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

The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

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).

Average daylight in June /
Average sunshine in June
Manassas, VA

Average daylight in June / Average sunshine in June - Manassas, VA
  • Average daylight in June: 14h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in June: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).

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).

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).

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).

Average visibility in June
Manassas, VA

Average visibility in June - Manassas, VA
  • Average visibility in June: 6mi

The months with the highest visibility are January, February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are May, September, October and December (5mi).

Manassas, Virginia, USA

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