March weather forecast
Harwinton, CT

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Weather in March

March, the first month of the spring in Harwinton, is still a cold month, with an average temperature ranging between max 42.4°F (5.8°C) and min 27.9°F (-2.3°C).

Temperature

Harwinton's transition into March is noticed by a slight rise in the average high-temperature, advancing from 34.3°F (1.3°C) in February to a still icy 42.4°F (5.8°C). In the month of March, the temperature generally rests at an average low of 27.9°F (-2.3°C).

Humidity

In March, the average relative humidity is 78%.

Rainfall

In Harwinton, Connecticut, in March, during 13.2 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 157.7 rainfall days, and 32.72" (831mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In March, it is snowing for 8.2 days. Throughout March, 4.61" (117mm) of snow is accumulated. In Harwinton, during the entire year, snow falls for 40 days and aggregates up to 20.55" (522mm) of snow.

Daylight

In March, the average length of the day in Harwinton is 11h and 58min.
On the first day of March in Harwinton, sunrise is at 6:25 am and sunset at 5:43 pm EST. On the last day of the month, sunrise is at 6:35 am and sunset at 7:17 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 Harwinton is 5.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harwinton. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In March, the average maximum UV index of 2 translates into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during March?

The high-temperature, in March, in Harwinton, is 42.4°F (5.8°C), while the low-temperature averages to 27.9°F (-2.3°C).

What is the average humidity in March?

The average relative humidity in March is 78%.

How many days does it rain in March?

In Harwinton, during March, the rain falls for 13.2 days and regularly aggregates up to 2.6" (66mm) of precipitation.

How much does it snow in March?

In Harwinton, in March, snow falls for 8.2 days, with typically accumulated 4.61" (117mm) of snow.

How many hours of daylight does Harwinton have in March?

The average day length in March is 11h and 58min.

When is the sunrise / sunset in March in Harwinton?

On the first day of March in Harwinton, sunrise is at 6:25 am and sunset at 5:43 pm EST. On the last day of the month, sunrise is at 6:35 am and sunset at 7:17 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 March, the average sunshine duration is 5.9h.

What is the month with the lowest UV index in Harwinton?

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

How high is the UV index in March?

In Harwinton, the average daily maximum UV index in March is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
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
Harwinton, CT

Average temperature in March - Harwinton, CT
  • Average high temperature in March: 42.4°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in March: 27.9°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 (19.2°F).

Average pressure in March
Harwinton, CT

Average pressure in March - Harwinton, 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
Harwinton, CT

Average wind speed in March - Harwinton, CT
  • Average wind speed in March: 8.3mph

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in March
Harwinton, CT

Average humidity in March - Harwinton, 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 (73%).

Average rainfall in March
Harwinton, CT

Average rainfall in March - Harwinton, CT
  • Average rainfall in March: 2.6"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in March
Harwinton, CT

Average rainfall days in March - Harwinton, CT
  • Average rainfall days in March: 13.2 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in March
Harwinton, CT

Average snowfall in March - Harwinton, CT
  • Average snowfall in March: 4.61"

The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in March
Harwinton, CT

Average snowfall days in March - Harwinton, CT
  • Average snowfall days in March: 8.2 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
Harwinton, CT

Average daylight in March / Average sunshine in March - Harwinton, 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 months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in March
Harwinton, CT

Average sunshine days in March - Harwinton, CT
  • Average sunshine days in March: 13.4 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in March
Harwinton, CT

Average UV index in March - Harwinton, 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
Harwinton, CT

Average cloud cover in March - Harwinton, CT
  • Average cloud cover in March: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in March
Harwinton, CT

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

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

Harwinton, Connecticut, USA

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