Contents
- Weather in March
- Frequently asked questions
- Average temperature in March
- Average pressure in March
- Average wind speed in March
- Average humidity in March
- Average rainfall in March
- Average rainfall days in March
- Average snowfall in March
- Average snowfall days in March
- Average daylight in March
- Average sunshine in March
- Average sunshine days in March
- Average UV index in March
- Average cloud cover in March
- Average visibility in March
Weather in March
Temperature
As March arrives, Herndon's weather shows an increase in high-temperatures, moving from February's wintry 36.7°F (2.6°C) to a frosty 46°F (7.8°C). March generally records an average low-temperature of 29.8°F (-1.2°C).Humidity
The average relative humidity in March in Herndon, Pennsylvania, is 77%.Rainfall
In Herndon, in March, it is raining for 13 days, with typically 2.36" (60mm) of accumulated precipitation. In Herndon, Pennsylvania, during the entire year, the rain falls for 165.3 days and collects up to 30.55" (776mm) of precipitation.Snowfall
Months with snowfall in Herndon are January through May, October through December. In March, it is snowing for 6.3 days. Throughout March, 3.78" (96mm) of snow is accumulated. Throughout the year, there are 38.1 snowfall days, and 17.68" (449mm) of snow is accumulated.Daylight
The average length of the day in March in Herndon 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 in Herndon 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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 2 during March, leads to the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Around midday, solar radiation is most harmful; hence, exposure should be limited. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What are the temperatures in Herndon in March?
What is the average humidity in March in Herndon?
How many days does it rain in March in Herndon?
How many days does it snow in March in Herndon?
How many hours of daylight does Herndon have in March?
When is the sunrise / sunset in March in Herndon?
When does Daylight Saving Time (DST) start in March in Herndon?
How many hours of sunshine does Herndon have in March?
When is the lowest UV index in Herndon?
What is the UV index intensity in March in Herndon?
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 2min
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).
Herndon, Pennsylvania, USA
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