March weather forecast
Cornwall, CT

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Weather in March

March, the first month of the spring in Cornwall, is also an icy month, with an average temperature ranging between min 27.5°F (-2.5°C) and max 42.3°F (5.7°C).

Temperature

With the beginning of March, Cornwall's average high-temperature sees a minor increase, transitioning from a cold 34.3°F (1.3°C) in February to a still wintry 42.3°F (5.7°C). Cornwall in March experiences a low-temperature average of 27.5°F (-2.5°C).

Humidity

The average relative humidity in March is 78%.

Rainfall

In March, the rain falls for 12.4 days. Throughout March, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 160.5 rainfall days, and 33.86" (860mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Cornwall. In Cornwall, Connecticut, during March, snow falls for 8.4 days and regularly aggregates up to 4.09" (104mm) of snow. In Cornwall, during the entire year, snow falls for 40.2 days and aggregates up to 20.39" (518mm) of snow.

Daylight

In Cornwall, the average length of the day in March is 11h and 58min.
On the first day of March, sunrise is at 6:26 am and sunset at 5:44 pm EST. On the last day of the month, sunrise is at 6:36 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

In March, the average sunshine is 5.8h.

UV index

The months with the lowest UV index in Cornwall 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 threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 2 in March translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during March?

The high-temperature during March is 42.3°F (5.7°C) and the low-temperature is 27.5°F (-2.5°C).

What is the average humidity in March?

In Cornwall, the average relative humidity in March is 78%.

How much does it rain in Cornwall in March?

In Cornwall, in March, during 12.4 rainfall days, 2.44" (62mm) of precipitation is typically accumulated.

How much does it snow in March?

In Cornwall, during March, snow falls for 8.4 days and regularly aggregates up to 4.09" (104mm) of snow.

How many hours of daylight does Cornwall have in March?

In March, the average day length is 11h and 58min.

When are sunrise and sunset in March?

In March, on the first day of the month, sunrise is at 6:26 am and sunset at 5:44 pm EST. On the last day of the month, sunrise is at 6:36 am and sunset at 7:18 pm EDT.

When does Daylight Saving Time (DST) start in March?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March?

In Cornwall, the average sunshine duration in March is 5.8h.

When is the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in March?

In Cornwall, the average daily maximum UV index in March is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Cornwall, CT

Average temperature in March - Cornwall, CT
  • Average high temperature in March: 42.3°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in March: 27.5°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in March
Cornwall, CT

Average pressure in March - Cornwall, CT
  • Average pressure in March: 30.05"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in March
Cornwall, CT

Average wind speed in March - Cornwall, CT
  • Average wind speed in March: 8mph

The windiest months (with the highest average wind speed) are January and March (8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity in March
Cornwall, CT

Average humidity in March - Cornwall, CT
  • Average humidity in March: 78%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (74%).

Average rainfall in March
Cornwall, CT

Average rainfall in March - Cornwall, CT
  • Average rainfall in March: 2.44"

The wettest month (with the highest rainfall) is July (3.54").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in March
Cornwall, CT

Average rainfall days in March - Cornwall, CT
  • Average rainfall days in March: 12.4 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.7 days).

Average snowfall in March
Cornwall, CT

Average snowfall in March - Cornwall, CT
  • Average snowfall in March: 4.09"

The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in March
Cornwall, CT

Average snowfall days in March - Cornwall, CT
  • Average snowfall days in March: 8.4 days

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in March /
Average sunshine in March
Cornwall, CT

Average daylight in March / Average sunshine in March - Cornwall, CT
  • 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in March
Cornwall, CT

Average sunshine days in March - Cornwall, CT
  • Average sunshine days in March: 12.8 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in March
Cornwall, CT

Average UV index in March - Cornwall, CT
  • Average UV index in March: 2

The month with the highest UV index is June (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
Cornwall, CT

Average cloud cover in March - Cornwall, CT
  • Average cloud cover in March: 52

The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in March
Cornwall, CT

Average visibility in March - Cornwall, CT
  • Average visibility in March: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

Cornwall, Connecticut, USA

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