March weather forecastPortsmouth, RI
March
Weather in March
The arrival of March in Portsmouth heralds the commencement of spring, seeing a jump in temperatures from the February chill. March can also count itself as one of the windiest months with winds blowing at an average speed of 11.9mph (19.2km/h). As warmth starts seeping in, the city bids adieu to snowfall until the return of winter. Lush greenery starts to reappear, a testament to higher rainfall this month. With the sun shining for longer durations, Portsmouth is now primed to gradually shift to more comfortable weather in the coming month.Temperature
March signals a minor shift in the average high-temperature, moving from February's icy 37.9°F (3.3°C) to a frosty 43.5°F (6.4°C). In Portsmouth, March's nights observe an average temperature dip to a cold 33.1°F (0.6°C).Humidity
March is the least humid month, with an average relative humidity of 73%.Rainfall
In March, the rain falls for 12.1 days. Throughout March, 2.83" (72mm) of precipitation is accumulated. In Portsmouth, during the entire year, the rain falls for 148.1 days and collects up to 29.65" (753mm) of precipitation.Snowfall
January through March, May, November and December are months with snowfall. March is the last month it regularly snows. During 5.2 snowfall days, in March, Portsmouth aggregates 2.48" (63mm) of snow. In Portsmouth, during the entire year, snow falls for 22.9 days and aggregates up to 8.78" (223mm) of snow.Daylight
The average length of the day in March is 11h and 58min.On the first day of March, sunrise is at 6:18 am and sunset at 5:35 pm EST. On the last day of the month, sunrise is at 6:28 am and sunset at 7:09 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 Portsmouth, the average sunshine in March is 6h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Portsmouth. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 in March translates into this advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Portsmouth, RI
- Average high temperature in March: 43.5°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in March: 33.1°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in March
Portsmouth, RI
- Average pressure in March: 30.03"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in March
Portsmouth, RI
- Average wind speed in March: 11.9mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in March
Portsmouth, RI
- Average humidity in March: 73%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is March (73%).
Average rainfall in March
Portsmouth, RI
- Average rainfall in March: 2.83"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in March
Portsmouth, RI
- Average rainfall days in March: 12.1 days
The month with the highest number of rainy days is April (15.6 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in March
Portsmouth, RI
- Average snowfall in March: 2.48"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in March
Portsmouth, RI
- Average snowfall days in March: 5.2 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in March /
Average sunshine in March
Portsmouth, RI
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in March: 6h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in March
Portsmouth, RI
- Average sunshine days in March: 14.4 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in March
Portsmouth, RI
- Average UV index in March: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in March
Portsmouth, RI
- 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 August (Cloud cover 29).
Average visibility in March
Portsmouth, RI
- 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).
