March weather forecastChatham, MA
March
Weather in March
March is yet another transition month in Chatham, with a shift from the peak of winter towards the initial whispers of spring. The environment becomes warmer, as the highest monthly temperature subtly climbs to 41°F (5°C). This month is marked by considerable rainfall, making it one of the rainiest periods of the year with 1.85" (47mm) of rainfall. It’s time to bring out the raincoats and umbrellas, with more than ten days on average expected to have some precipitation. As March progresses, the warmer weather becomes more pronounced, signaling the beginning of the much-anticipated spring season.Temperature
Chatham notes an average high-temperature of a still cold 41°F (5°C) in March, hardly diverging from February. The nights of March cool down to an average low of 35.4°F (1.9°C), subtly lower than daytime highs.Humidity
The average relative humidity in March is 76%.Rainfall
In Chatham, during March, the rain falls for 10.8 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 142.4 rainfall days, and 22.09" (561mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Chatham, in March, during 3.7 snowfall days, 0.91" (23mm) of snow is typically accumulated. Throughout the year, there are 20.8 snowfall days, and 4.37" (111mm) of snow is accumulated.Ocean temperature
With an average ocean temperature of 39.9°F (4.4°C), March is the month with the coldest seawater.Note: When swimming, this state is excessively cold, posing a lethal risk. Absent the protection of insulated waterproof wear, hypothermia is likely to occur immediately.
Daylight
In March, the average length of the day is 11h and 58min.On the first day of the month, sunrise is at 6:13 am and sunset at 5:30 pm EST. On the last day of March, in Chatham, sunrise is at 6:23 am and sunset at 7:04 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 5.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In March, the maximum UV index of 2 suggests these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Chatham, MA
- Average high temperature in March: 41°F
The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).
- Average low temperature in March: 35.4°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in March
Chatham, MA
- Average pressure in March: 30.02"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in March
Chatham, MA
- Average wind speed in March: 17.6mph
The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity in March
Chatham, MA
- Average humidity in March: 76%
The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall in March
Chatham, MA
- Average rainfall in March: 1.85"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in March
Chatham, MA
- Average rainfall days in March: 10.8 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in March
Chatham, MA
- Average snowfall in March: 0.91"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in March
Chatham, MA
- Average snowfall days in March: 3.7 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in March
Chatham, MA
- Average sea temperature in March: 39.8°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (39.8°F).
Average daylight in March /
Average sunshine in March
Chatham, MA
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in March: 5h and 48min
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 18min).
Average sunshine days in March
Chatham, MA
- Average sunshine days in March: 13.9 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).
Average UV index in March
Chatham, MA
- Average UV index in March: 2
The months with the highest UV index are July and August (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
Chatham, MA
- Average cloud cover in March: 51
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in March
Chatham, MA
- 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).
