March weather forecast
Decatur, TN

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Weather in March

The first month of the spring, March, is a moderate month in Decatur, Tennessee, with an average temperature ranging between max 58.6°F (14.8°C) and min 40.8°F (4.9°C).

Temperature

The arrival of March brings a soft temperature shift, with the average high-temperature nudging from a cool 50.9°F (10.5°C) in February to a refreshing 58.6°F (14.8°C). Nighttime temperature in Decatur dips to a mean of 40.8°F (4.9°C) during March.

Humidity

In March, the average relative humidity is 79%.

Rainfall

In Decatur, in March, it is raining for 15.9 days, with typically 3.7" (94mm) of accumulated precipitation. In Decatur, during the entire year, the rain falls for 171.8 days and collects up to 41.81" (1062mm) of precipitation.

Snowfall

Months with snowfall in Decatur are January through April, November and December. In Decatur, during March, snow falls for 2.2 days and regularly aggregates up to 0.31" (8mm) of snow. In Decatur, during the entire year, snow falls for 14.8 days and aggregates up to 3.07" (78mm) of snow.

Daylight

In Decatur, Tennessee, the average length of the day in March is 11h and 59min.
On the first day of the month, sunrise is at 7:07 am and sunset at 6:34 pm EST. On the last day of March, sunrise is at 7:25 am and sunset at 8:00 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 Decatur, the average sunshine in March is 6.5h.

UV index

In March, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In March, an average UV index of 3 transforms into the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. To avoid the Sun's strongest rays, limit exposure around the mid-day period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Decatur in March?

The average high-temperature and low-temperature in Decatur, Tennessee, during March are 58.6°F (14.8°C) and 40.8°F (4.9°C) respectively.

What is the average humidity in March in Decatur?

In Decatur, the average relative humidity in March is 79%.

How much does it rain in Decatur in March?

In Decatur, Tennessee, in March, during 15.9 rainfall days, 3.7" (94mm) of precipitation is typically accumulated.

How much does it snow in Decatur in March?

In Decatur, during March, snow falls for 2.2 days and regularly aggregates up to 0.31" (8mm) of snow.

What is the average length of the day in March in Decatur?

In Decatur, Tennessee, the average day length in March is 11h and 59min.

What time are sunrise and sunset in March in Decatur?

In March, on the first day of the month, sunrise is at 7:07 am and sunset at 6:34 pm EST. On the last day of the month, in Decatur, Tennessee, sunrise is at 7:25 am and sunset at 8:00 pm EDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Decatur, Tennessee, 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 Decatur?

The average sunshine duration in March is 6.5h.

What is the UV index intensity in March in Decatur?

In Decatur, Tennessee, the average daily maximum UV index in March is 3. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Decatur, TN

Average temperature in March - Decatur, TN
  • Average high temperature in March: 58.6°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (45.5°F).

  • Average low temperature in March: 40.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in March
Decatur, TN

Average pressure in March - Decatur, TN
  • Average pressure in March: 30.09"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in March
Decatur, TN

Average wind speed in March - Decatur, TN
  • Average wind speed in March: 6.5mph

The windiest months (with the highest average wind speed) are February, March and April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).

Average humidity in March
Decatur, TN

Average humidity in March - Decatur, TN
  • Average humidity in March: 79%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August, October and November (75%).

Average rainfall in March
Decatur, TN

Average rainfall in March - Decatur, TN
  • Average rainfall in March: 3.7"

The wettest months (with the highest rainfall) are July and December (4.29").
The driest month (with the least rainfall) is September (2.32").

Average rainfall days in March
Decatur, TN

Average rainfall days in March - Decatur, TN
  • Average rainfall days in March: 15.9 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in March
Decatur, TN

Average snowfall in March - Decatur, TN
  • Average snowfall in March: 0.31"

The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in March
Decatur, TN

Average snowfall days in March - Decatur, TN
  • Average snowfall days in March: 2.2 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in March /
Average sunshine in March
Decatur, TN

Average daylight in March / Average sunshine in March - Decatur, TN
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in March: 6h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in March
Decatur, TN

Average sunshine days in March - Decatur, TN
  • Average sunshine days in March: 12.3 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (10.2 days).

Average UV index in March
Decatur, TN

Average UV index in March - Decatur, TN
  • Average UV index in March: 3

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in March
Decatur, TN

Average cloud cover in March - Decatur, TN
  • Average cloud cover in March: 48

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in March
Decatur, TN

Average visibility in March - Decatur, TN
  • Average visibility in March: 5mi

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

Decatur, Tennessee, USA

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