March weather forecastHerndon, PA
March
Weather in March
March, the first month of the spring in Herndon, is a chilly month, with an average temperature varying between 29.8°F (-1.2°C) and 46°F (7.8°C).Temperature
With the arrival of March, the average high-temperature transitions from an icy 36.7°F (2.6°C) in February to a frosty 46°F (7.8°C). Herndon temperatures generally rest at a low of 29.8°F (-1.2°C) during the March nights.Humidity
In Herndon, the average relative humidity in March is 77%.Rainfall
In Herndon, during March, the rain falls for 13 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 165.3 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Herndon, in March, during 6.3 snowfall days, 3.78" (96mm) of snow is typically accumulated. In Herndon, Pennsylvania, during the entire year, snow falls for 38.1 days and aggregates up to 17.68" (449mm) of snow.Daylight
In Herndon, the average length of the day in March is 11h and 58min.On the first day of the month, sunrise is at 6:39 am and sunset at 5:59 pm EST. On the last day of March, sunrise is at 6:51 am and sunset at 7:31 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.
Sunshine
In March, the average sunshine is 6.3h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during March translates into the following directions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Herndon, PA
- Average high temperature in March: 46°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in March: 29.8°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in March
Herndon, PA
- Average pressure in March: 30.08"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in March
Herndon, PA
- Average wind speed in March: 7.8mph
The windiest months (with the highest average wind speed) are March and April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in March
Herndon, PA
- Average humidity in March: 77%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in March
Herndon, PA
- Average rainfall in March: 2.36"
The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are February and November (2.09").
Average rainfall days in March
Herndon, PA
- Average rainfall days in March: 13 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (9 days).
Average snowfall in March
Herndon, PA
- Average snowfall in March: 3.78"
The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
Herndon, PA
- Average snowfall days in March: 6.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Herndon, PA
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in March: 6h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in March
Herndon, PA
- Average sunshine days in March: 13 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in March
Herndon, PA
- Average UV index in March: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in March
Herndon, PA
- Average cloud cover in March: 50
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in March
Herndon, PA
- Average visibility in March: 6mi
The months with the highest visibility are March, April, June, July and November (6mi).
The months with the lowest visibility are January, February, May, August, September, October and December (5mi).
