March weather forecast
Herndon, VA

Weather in March

March, the first month of the spring in Herndon, is a cool month, with an average temperature fluctuating between 35.6°F (2°C) and 52.5°F (11.4°C).

Temperature

In March, the average high-temperature slightly increases from a frosty 43.9°F (6.6°C) in February to a fresh 52.5°F (11.4°C). The average low-temperature, in Herndon, is 35.6°F (2°C).

Humidity

In March, the average relative humidity is 74%.

Rainfall

In Herndon, Virginia, during March, the rain falls for 13 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Herndon, Virginia, during the entire year, the rain falls for 158.1 days and collects up to 31.46" (799mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In March, in Herndon, it is snowing for 3 days. Throughout March, 3.11" (79mm) of snow is accumulated. In Herndon, during the entire year, snow falls for 16.7 days and aggregates up to 12.28" (312mm) of snow.

Daylight

The average length of the day in March is 11h and 59min.
On the first day of the month, sunrise is at 6:41 am and sunset at 6:01 pm EST. On the last day of March, sunrise is at 6:55 am and sunset at 7:31 pm EDT.
Note: On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 5. 2023, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

In Herndon, the average sunshine in March is 6.6h.

UV index

In Herndon, the average daily maximum UV index in March is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In March, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in March in Herndon?

In March, in Herndon, Virginia, the average high-temperature is 52.5°F (11.4°C), and the average low-temperature is 35.6°F (2°C).

What is the average humidity in March in Herndon?

The average relative humidity in March in Herndon, Virginia, is 74%.

How much does it rain in Herndon in March?

In Herndon, during March, the rain falls for 13 days and regularly aggregates up to 2.44" (62mm) of precipitation.

How much does it snow in Herndon in March?

In Herndon, Virginia, during March, snow falls for 3 days and regularly aggregates up to 3.11" (79mm) of snow.

How many hours of daylight does Herndon have in March?

In March, the average day length is 11h and 59min.

When are sunrise and sunset in March in Herndon?

On the first day of March, sunrise is at 6:41 am and sunset at 6:01 pm EST. On the last day of the month, sunrise is at 6:55 am and sunset at 7:31 pm EDT.

When does Daylight Saving Time (DST) start in March in Herndon?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Herndon, Virginia, and the time zone changes from EST to EDT. DST ends Sunday, November 5. 2023, at 2:00 am.

How long on average sun shines in March in Herndon?

In Herndon, Virginia, the average sunshine duration in March is 6.6h.

What is the UV index intensity in March in Herndon?

In March, the average daily maximum UV index in Herndon is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Herndon, VA

Average temperature in March - Herndon, VA
  • Average high temperature in March: 52.5°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in March: 35.6°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

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Average pressure in March
Herndon, VA

Average pressure in March - Herndon, VA
  • Average pressure in March: 30.08"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).

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Average wind speed in March
Herndon, VA

Average wind speed in March - Herndon, VA
  • Average wind speed in March: 7.5mph

The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in March
Herndon, VA

Average humidity in March - Herndon, VA
  • Average humidity in March: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in March
Herndon, VA

Average rainfall in March - Herndon, VA
  • Average rainfall in March: 2.44"

The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in March
Herndon, VA

Average rainfall days in March - Herndon, VA
  • Average rainfall days in March: 13 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (9.3 days).

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Average snowfall in March
Herndon, VA

Average snowfall in March - Herndon, VA
  • Average snowfall in March: 3.11"

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").

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Average snowfall days in March
Herndon, VA

Average snowfall days in March - Herndon, VA
  • Average snowfall days in March: 3 days

The months with the highest number of snowfall days are January and February (5.1 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 March /
Average sunshine in March
Herndon, VA

Average daylight in March / Average sunshine in March - Herndon, VA
  • Average daylight in March: 11h and 59min

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

  • Average sunshine in March: 6h and 36min

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 0min).

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Average sunshine days in March
Herndon, VA

Average sunshine days in March - Herndon, VA
  • Average sunshine days in March: 15.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in March
Herndon, VA

Average UV index in March - Herndon, VA
  • Average UV index in March: 3

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 March
Herndon, VA

Average cloud cover in March - Herndon, VA
  • Average cloud cover in March: 48

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in March
Herndon, VA

Average visibility in March - Herndon, VA
  • Average visibility in March: 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).

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