June weather forecast and climate
Washington, DC

Rows of jacaranda trees in spring in the tidal basin of the Washington Monument in Washington city, DC, USA
Rows of jacaranda trees in spring in the tidal basin of the Washington Monument in Washington city, DC, USA

Weather in June

The first month of the summer, June, is also a moderately hot month in Washington, District of Columbia, with temperature in the range of an average high of 82.8°F (28.2°C) and an average low of 64.2°F (17.9°C).

Temperature

In June, the average high-temperature slightly increases, from a warm 74.5°F (23.6°C) in May, to a still moderately hot 82.8°F (28.2°C). In June, the average low-temperature is 64.2°F (17.9°C).

Heat index

In June, the average heat index is appraised at a hot 88.7°F (31.5°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like clothing, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise 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 Washington is 73%.

Rainfall

In Washington, in June, during 14.2 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 149.1 rainfall days, and 26.14" (664mm) of precipitation is accumulated.

Snowfall

In Washington snow does not fall in April through November.

Daylight

The month with the longest days is June, with an average of 14.9h of daylight.

Sunshine

In June, the average sunshine is 10.2h.

UV index

The month with the highest UV index in Washington, District of Columbia, is June, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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 Washington?

In June, the average high-temperature is 82.8°F (28.2°C), and the average low-temperature is 64.2°F (17.9°C). In June, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that calculates temperature value influenced by the moisture in the air, is appraised at 88.7°F (31.5°C).

What is the average humidity in June in Washington?

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

How many days does it rain in June in Washington?

In Washington, District of Columbia, in June, it is raining for 14.2 days, with typically 2.4" (61mm) of accumulated precipitation.

When it does not snow in Washington?

In Washington snow does not fall in April through November.

When are the longest days in Washington?

The month with the longest days is June, with an average of 14.9h of daylight.

How many hours of daylight does Washington have in June?

The average length of the day in June in Washington is 14.9h.

How long on average sun shines in June in Washington?

In June, the average sunshine is 10.2h.

When is the highest UV index in Washington?

With an average maximum UV index of 7, June is the month with the highest UV index in Washington.

How high is the UV index in June in Washington?

The average daily maximum UV index in June in Washington is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in June
Washington, DC

Average temperature in June - Washington, DC
  • Average high temperature in June: 28.2°C

The warmest month (with the highest average high temperature) is July (31.1°C).
The month with the lowest average high temperature is January (4.8°C).

  • Average low temperature in June: 17.9°C

The month with the highest average low temperature is July (20.6°C).
The coldest month (with the lowest average low temperature) is January (-2.5°C).

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Average pressure in June
Washington, DC

Average pressure in June - Washington, DC
  • Average pressure in June: 1014.1mbar

The month with the highest atmospheric pressure is November (1020.6mbar).
The month with the lowest atmospheric pressure is June (1014.1mbar).

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Average wind speed in June
Washington, DC

Average wind speed in June - Washington, DC
  • Average wind speed in June: 9.4km/h

The windiest month (with the highest average wind speed) is March (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.1km/h).

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Average humidity in June
Washington, DC

Average humidity in June - Washington, DC
  • Average humidity in June: 73%

The month with the highest relative humidity is May (76%).
Months with the lowest relative humidity are April and July (71%).

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Average rainfall in June
Washington, DC

Average rainfall in June - Washington, DC
  • Average rainfall in June: 61mm

The wettest month (with the highest rainfall) is August (88mm).
The driest month (with the least rainfall) is January (40mm).

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Average rainfall days in June
Washington, DC

Average rainfall days in June - Washington, DC
  • Average rainfall days in June: 14.2 days

The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is November (8.1 days).

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Average snowfall in June
Washington, DC

Average snowfall in June - Washington, DC
  • Average snowfall in June: 0mm

The month with the highest snowfall is January (55mm).
Months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in June
Washington, DC

Average snowfall days in June - Washington, DC
  • Average snowfall days in June: 0 days

Months with the highest number of snowfall days are January and February (3.8 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in June /
Average sunshine in June
Washington, DC

Average daylight in June / Average sunshine in June - Washington, DC
  • Average daylight in June: 14.9h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in June: 10.2h

The month with the most sunshine is July (Average sunshine: 10.7h).
Months with the least sunshine are January, February and December (Average sunshine: 5.1).

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Average sunshine days in June
Washington, DC

Average sunshine days in June - Washington, DC
  • Average sunshine days in June: 14 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.8 days).

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Average UV index in June
Washington, DC

Average UV index in June - Washington, DC
  • Average UV index in June: 7

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in June
Washington, DC

Average cloud cover in June - Washington, DC
  • 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).

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Average visibility in June
Washington, DC

Average visibility in June - Washington, DC
  • Average visibility in June: 9km

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

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