March weather forecast
Merrimac, MA

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Weather in March

March, the first month of the spring in Merrimac, is still a cold month, with an average temperature ranging between min 28.8°F (-1.8°C) and max 41.9°F (5.5°C).

Temperature

March's arrival coincides with a marginal rise in the average high-temperature, moving from February's 34.7°F (1.5°C) to a still cold 41.9°F (5.5°C). Merrimac in March anticipates an average nighttime temperature of 28.8°F (-1.8°C).

Humidity

In March, the average relative humidity is 77%.

Rainfall

In Merrimac, in March, during 7.2 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 78.3 rainfall days, and 5.43" (138mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Merrimac are January through May, November and December. In Merrimac, in March, snow falls for 4.1 days, with typically accumulated 0.39" (10mm) of snow. Throughout the year, in Merrimac, Massachusetts, there are 17.2 snowfall days, and 2.6" (66mm) of snow is accumulated.

Daylight

The average length of the day in March in Merrimac is 11h and 58min.
On the first day of March in Merrimac, sunrise is at 6:18 am and sunset at 5:33 pm EST. On the last day of the month, sunrise is at 6:26 am and sunset at 7:09 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 Merrimac, 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 estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 2 during March translates into the following guidance:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

Is it cold in Merrimac during March?

In March, in Merrimac, the average high-temperature is 41.9°F (5.5°C), and the average low-temperature is 28.8°F (-1.8°C).

What is the average humidity in March in Merrimac?

The average relative humidity in March is 77%.

How much does it rain in Merrimac in March?

In March, in Merrimac, the rain falls for 7.2 days. Throughout March, 0.39" (10mm) of precipitation is accumulated.

How much does it snow in Merrimac in March?

In Merrimac, Massachusetts, during March, snow falls for 4.1 days and regularly aggregates up to 0.39" (10mm) of snow.

How many hours of daylight does Merrimac have in March?

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

When is the sunrise / sunset in March in Merrimac?

In March, on the first day of the month, sunrise is at 6:18 am and sunset at 5:33 pm EST. On the last day of the month, in Merrimac, Massachusetts, sunrise is at 6:26 am and sunset at 7:09 pm EDT.

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

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

How many hours of sunshine does Merrimac have in March?

The average sunshine duration in March in Merrimac is 5.8h.

When is the lowest UV index in Merrimac?

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

What is the UV index intensity in March in Merrimac?

In March, the average daily maximum UV index in Merrimac, Massachusetts, is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Merrimac, MA

Average temperature in March - Merrimac, MA
  • Average high temperature in March: 41.9°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in March: 28.8°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure in March
Merrimac, MA

Average pressure in March - Merrimac, MA
  • Average pressure in March: 30.03"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in March
Merrimac, MA

Average wind speed in March - Merrimac, MA
  • Average wind speed in March: 8.9mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in March
Merrimac, MA

Average humidity in March - Merrimac, MA
  • Average humidity in March: 77%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in March
Merrimac, MA

Average rainfall in March - Merrimac, MA
  • Average rainfall in March: 0.39"

The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.2").

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Average rainfall days in March
Merrimac, MA

Average rainfall days in March - Merrimac, MA
  • Average rainfall days in March: 7.2 days

The month with the highest number of rainy days is July (8.8 days).
The month with the least rainy days is January (3.6 days).

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Average snowfall in March
Merrimac, MA

Average snowfall in March - Merrimac, MA
  • Average snowfall in March: 0.39"

The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in March
Merrimac, MA

Average snowfall days in March - Merrimac, MA
  • Average snowfall days in March: 4.1 days

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in March /
Average sunshine in March
Merrimac, MA

Average daylight in March / Average sunshine in March - Merrimac, MA
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in March: 5h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in March
Merrimac, MA

Average sunshine days in March - Merrimac, MA
  • Average sunshine days in March: 20.6 days

The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (18.4 days).

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Average UV index in March
Merrimac, MA

Average UV index in March - Merrimac, MA
  • 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).

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Average cloud cover in March
Merrimac, MA

Average cloud cover in March - Merrimac, MA
  • Average cloud cover in March: 50

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in March
Merrimac, MA

Average visibility in March - Merrimac, 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).

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Merrimac, Massachusetts, USA

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