March weather forecastWilmington, DE

March
Weather in March
As Wilmington makes the transition from winter to spring, March introduces more mild weather with warming temperatures. March is unique because it receives 2.95" (75mm) of rainfall, the first notable increase after the decline in February. There's a clear upward trend in daylight hours, solar exposure and UV index indicating the march towards summer. The succeeding month of April can expect continued transformation of weather dynamics, with further increases in temperature, daylight hours and UV index.Temperature
Wilmington's March weather indicates a minor ascent in high-temperatures, adjusting from a cold 40.8°F (4.9°C) in February to a frosty 49.3°F (9.6°C). Wilmington's nighttime temperature in March falls to an average of 34.7°F (1.5°C).Humidity
In March, the average relative humidity in Wilmington is 73%.Rainfall
In Wilmington, in March, it is raining for 14.9 days, with typically 2.95" (75mm) of accumulated precipitation. In Wilmington, during the entire year, the rain falls for 168.9 days and collects up to 35.55" (903mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is March, when snow falls for 4.7 days and typically aggregates up to 3.58" (91mm) of snow.Ocean temperature
In Wilmington, the average seawater temperature in March is 35.6°F (2°C).Note: In the practice of swimming, this situation poses immediate risks to life. Losing control over breathing is immediate, thereby making clear thinking near impossible. A specialized swimsuit is obligatory to restrict thermal loss.
Daylight
The average length of the day in March in Wilmington, Delaware, is 11h and 59min.On the first day of the month, sunrise is at 6:33 am and sunset at 5:54 pm EST. On the last day of March, in Wilmington, sunrise is at 6:46 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
In March, the average sunshine in Wilmington is 6.5h.UV index
In Wilmington, Delaware, the average daily maximum UV index in March is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 3 during March translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Wilmington, DE
- Average high temperature in March: 49.3°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in March: 34.7°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in March
Wilmington, DE
- 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
Wilmington, DE
- Average wind speed in March: 8.6mph
The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in March
Wilmington, DE
- Average humidity in March: 73%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in March
Wilmington, DE
- Average rainfall in March: 2.95"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").
Average rainfall days in March
Wilmington, DE
- Average rainfall days in March: 14.9 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in March
Wilmington, DE
- Average snowfall in March: 3.58"
The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
Wilmington, DE
- Average snowfall days in March: 4.7 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in March
Wilmington, DE
- Average sea temperature in March: 36°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (34°F).
Average daylight in March /
Average sunshine in March
Wilmington, DE
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in March: 6h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in March
Wilmington, DE
- Average sunshine days in March: 12.3 days
The month with the most sunshine days is November (18.6 days).
The months with the least sunshine days are May and July (9.8 days).
Average UV index in March
Wilmington, DE
- 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).
Average cloud cover in March
Wilmington, DE
- Average cloud cover in March: 47
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in March
Wilmington, DE
- Average visibility in March: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





