March weather forecastSouth Portland, ME
March
Weather in March
March in South Portland brings hope for the end of the cold season, as warmer temperatures start to settle in. The city's climate starts to transform, with a considerable leap from February's low of 21.6°F (-5.8°C) to a much appreciated 28.4°F (-2°C). This transition month also sees snow becoming less dominant, as rainfall increases to 1.73" (44mm). The city starts to shed its winter character slowly, making way for spring’s arrival. Meanwhile, the increased daylight hours are a welcome sign of the change in the season.Temperature
March's onset in South Portland, Maine, brings a subtle temperature rise, moving from 32.5°F (0.3°C) in February to a still wintry 38.3°F (3.5°C). An average nighttime temperature of 28.4°F (-2°C) is noted in South Portland during the month of March.Humidity
In March, the average relative humidity in South Portland is 78%.Rainfall
In South Portland, in March, it is raining for 9.3 days, with typically 1.73" (44mm) of accumulated precipitation. In South Portland, during the entire year, the rain falls for 127 days and collects up to 21.93" (557mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In March, it is snowing for 5.8 days. Throughout March, 2.09" (53mm) of snow is accumulated. Throughout the year, there are 29.7 snowfall days, and 11.73" (298mm) of snow is accumulated.Ocean temperature
With an average ocean temperature of 37.9°F (3.3°C), March is the month with the coldest seawater.Note: While swimming, this scenario is perilously cold, dangerous, and potentially fatal. Hypothermia is almost imminent without proper insulated waterproof attire.
Daylight
In March, the average length of the day is 11h and 58min.On the first day of March, sunrise is at 6:16 am and sunset at 5:30 pm EST. On the last day of the month, sunrise is at 6:22 am and sunset at 7:06 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 South Portland is 5.9h.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 low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 in March translates into these instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
South Portland, ME
- Average high temperature in March: 38.3°F
The warmest month (with the highest average high temperature) is July (72.5°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in March: 28.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in March
South Portland, ME
- Average pressure in March: 30.02"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in March
South Portland, ME
- Average wind speed in March: 11.7mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in March
South Portland, ME
- Average humidity in March: 78%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).
Average rainfall in March
South Portland, ME
- Average rainfall in March: 1.73"
The wettest month (with the highest rainfall) is October (2.36").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in March
South Portland, ME
- Average rainfall days in March: 9.3 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in March
South Portland, ME
- Average snowfall in March: 2.09"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in March
South Portland, ME
- Average snowfall days in March: 5.8 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in March
South Portland, ME
- Average sea temperature in March: 38°F
The best month for swimming (with the highest average sea temperature) is August (63.7°F).
The coldest month (with the lowest average sea temperature) is March (38°F).
Average daylight in March /
Average sunshine in March
South Portland, ME
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in March: 5h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in March
South Portland, ME
- Average sunshine days in March: 15.6 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in March
South Portland, ME
- Average UV index in March: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in March
South Portland, ME
- Average cloud cover in March: 49
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in March
South Portland, ME
- 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).
