June weather forecast
Fairfax, VA

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Weather in June

As the mid-year mark approaches, June arrives with the full bloom of summer in Fairfax, Virginia. The rising temperatures are reciprocated with a peak UV index rating at 6, encouraging residents to take precautionary measures. Despite temperatures continuing to trend upwards, pre-dawn conditions remain cooler indicating wide diurnal temperature variations. The summertime vibe carries into the subsequent month, making July the peak of summer in Fairfax.

Temperature

Fairfax, Virginia, perceives a slight temperature ascent during June, with average high-temperatures adjusting from a warm 74.8°F (23.8°C) in May to a still moderately hot 82.9°F (28.3°C). Fairfax records an average nighttime low of 63.5°F (17.5°C) in June.

Heat index

For June, the heat index is computed to be a tropical 89.6°F (32°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

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

Rainfall

In Fairfax, during June, the rain falls for 14.6 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 162 rainfall days, and 31.65" (804mm) of precipitation is accumulated.

Snowfall

In Fairfax, snow does not fall in May through October.

Daylight

June has the longest days of the year, with an average of 14h and 48min of daylight.
On the first day of June, sunrise is at 5:45 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:38 pm EDT.

Sunshine

In June, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 6 during June morphs into the following directions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is June?

In Fairfax, in June, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 63.5°F (17.5°C). In June, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 89.6°F (32°C).

What is the average humidity in June in Fairfax?

The average relative humidity in June is 73%.

How much does it rain in June?

In June, in Fairfax, the rain falls for 14.6 days. Throughout June, 2.68" (68mm) of precipitation is accumulated.

When it does not snow?

In Fairfax, snow does not fall in May through October.

When are the longest days?

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

How many hours of daylight does Fairfax have in June?

In Fairfax, the average day length in June is 14h and 51min.

When are sunrise and sunset in June?

In June, on the first day of the month, sunrise is at 5:45 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:38 pm EDT.

How many hours of sunshine does Fairfax have in June?

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

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

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

What is the UV index intensity in June?

In June, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
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
Fairfax, VA

Average temperature in June - Fairfax, VA
  • Average high temperature in June: 82.9°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in June: 63.5°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

Average pressure in June
Fairfax, VA

Average pressure in June - Fairfax, 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
Fairfax, VA

Average wind speed in June - Fairfax, VA
  • Average wind speed in June: 5.5mph

The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in June
Fairfax, VA

Average humidity in June - Fairfax, VA
  • Average humidity in June: 73%

The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (71%).

Average rainfall in June
Fairfax, VA

Average rainfall in June - Fairfax, VA
  • Average rainfall in June: 2.68"

The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in June
Fairfax, VA

Average rainfall days in June - Fairfax, VA
  • Average rainfall days in June: 14.6 days

The months with the highest number of rainy days are May and August (17.3 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in June
Fairfax, VA

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

The month with the highest snowfall is January (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in June
Fairfax, VA

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

The month with the highest number of snowfall days is January (5.6 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
Fairfax, VA

Average daylight in June / Average sunshine in June - Fairfax, 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 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).

Average sunshine days in June
Fairfax, VA

Average sunshine days in June - Fairfax, VA
  • Average sunshine days in June: 13.2 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in June
Fairfax, VA

Average UV index in June - Fairfax, 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
Fairfax, VA

Average cloud cover in June - Fairfax, VA
  • Average cloud cover in June: 33

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 June
Fairfax, VA

Average visibility in June - Fairfax, VA
  • Average visibility in June: 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).

Fairfax, Virginia, USA

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