March weather forecastBethlehem, PA

March
Weather in March
Bethlehem city embarks on a transitional journey from depths of wintertime to stirrings of spring during March. As winter recedes, a milder weather pattern unfolds where the temperature extends up to 46°F (7.8°C), and snowfall reduces significantly to 4.13" (105mm). This shift is also marked with increased rainfall and longer daylight hours, inviting the vibrant spring flowers to bloom. Outside activities and flora deliberately thrive as the city emerges from the winter cocoon. The temperate weather combined with slight seasonal changes opens a colorful chapter in the city's annual weather chronicles.Temperature
As Bethlehem transitions into March, the average high-temperature is observed to slightly rise from a wintry 37.8°F (3.2°C) in February to a frosty 46°F (7.8°C). Bethlehem registers a consistent average low-temperature of 30°F (-1.1°C) during March.Humidity
In March, the average relative humidity is 78%.Rainfall
In Bethlehem, in March, during 11.8 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 153 rainfall days, and 26.81" (681mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is March, when snow falls for 5 days and typically aggregates up to 4.13" (105mm) of snow.Daylight
The average length of the day in March is 11h and 58min.On the first day of the month, sunrise is at 6:34 am and sunset at 5:53 pm EST. On the last day of March, sunrise is at 6:45 am and sunset at 7:25 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
The average sunshine in March 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 exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 2 in March leads to these recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Bethlehem, PA
- Average high temperature in March: 46°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in March: 30°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in March
Bethlehem, PA
- Average pressure in March: 30.07"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in March
Bethlehem, PA
- Average wind speed in March: 8.1mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in March
Bethlehem, PA
- Average humidity in March: 78%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in March
Bethlehem, PA
- Average rainfall in March: 2.17"
The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in March
Bethlehem, PA
- Average rainfall days in March: 11.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in March
Bethlehem, PA
- Average snowfall in March: 4.13"
The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
Bethlehem, PA
- Average snowfall days in March: 5 days
The months with the highest number of snowfall days are January and February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Bethlehem, 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 30min).
Average sunshine days in March
Bethlehem, PA
- Average sunshine days in March: 14.3 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).
Average UV index in March
Bethlehem, PA
- Average UV index in March: 2
The months with the highest UV index are May, 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
Bethlehem, PA
- Average cloud cover in March: 49
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in March
Bethlehem, PA
- Average visibility in March: 5mi
The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).





