March weather forecastGreenwich, CT
March
Weather in March
March brings a sigh of relief from the freezing temperatures. Although remnants of winter are still felt, signs of the spring season start appearing across Greenwich. The mercury level gradually rises from the freezing point, marking the arrival of warmer days. The city experiences around 12.8 days of rainfall in March, hinting at a rare blend of snow-melt and spring showers. The daylight hours extend, allowing ample time for outdoor activities.Temperature
Observing a slight rise in March, the average high-temperature shifts from February's icy 38.3°F (3.5°C) to a chilly 45°F (7.2°C). March brings with it a nighttime average temperature of 33.8°F (1°C).Humidity
In March, the average relative humidity is 73%.Rainfall
In Greenwich, in March, it is raining for 12.8 days, with typically 2.83" (72mm) of accumulated precipitation. In Greenwich, during the entire year, the rain falls for 165.6 days and collects up to 37.64" (956mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Greenwich, during March, snow falls for 5 days and regularly aggregates up to 2.36" (60mm) of snow. In Greenwich, during the entire year, snow falls for 25.5 days and aggregates up to 8.78" (223mm) of snow.Ocean temperature
In Greenwich, in March, the average water temperature is 39.7°F (4.3°C).Note: In swimming engagements, this poses immediate life-threatening risks. The loss of breath control is instantaneous, thereby hindering clear thought. A specialized swimsuit is mandatory to limit thermal dissipation.
Daylight
In Greenwich, the average length of the day in March is 11h and 58min.On the first day of the month, sunrise is at 6:27 am and sunset at 5:45 pm EST. On the last day of March, sunrise is at 6:38 am and sunset at 7:18 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 6.2h.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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In March, the maximum UV index of 2 transforms into these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Greenwich, CT
- Average high temperature in March: 45°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in March: 33.8°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in March
Greenwich, CT
- Average pressure in March: 30.05"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in March
Greenwich, CT
- Average wind speed in March: 9.7mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in March
Greenwich, CT
- Average humidity in March: 73%
The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall in March
Greenwich, CT
- Average rainfall in March: 2.83"
The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.4").
Average rainfall days in March
Greenwich, CT
- Average rainfall days in March: 12.8 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in March
Greenwich, CT
- Average snowfall in March: 2.36"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in March
Greenwich, CT
- Average snowfall days in March: 5 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in March
Greenwich, CT
- Average sea temperature in March: 39.7°F
The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).
Average daylight in March /
Average sunshine in March
Greenwich, CT
- 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 18min).
- Average sunshine in March: 6h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in March
Greenwich, CT
- Average sunshine days in March: 14 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in March
Greenwich, CT
- 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, November and December (UV index 2).
Average cloud cover in March
Greenwich, CT
- Average cloud cover in March: 48
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in March
Greenwich, CT
- 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).
