March weather forecast
New Castle, CO

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Weather in March

March, the first month of the spring in New Castle, is also a wintry month, with an average temperature varying between 24.3°F (-4.3°C) and 41.7°F (5.4°C).

Temperature

The rise of average high-temperatures is seen in March, with an increase from 32.4°F (0.2°C) in February to a still cold 41.7°F (5.4°C). New Castle reports a consistent average low-temperature of 24.3°F (-4.3°C) throughout March nights.

Humidity

In New Castle, Colorado, the average relative humidity in March is 74%.

Rainfall

In New Castle, Colorado, during March, the rain falls for 11.4 days and regularly aggregates up to 1.42" (36mm) of precipitation. In New Castle, during the entire year, the rain falls for 107.7 days and collects up to 11.89" (302mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in New Castle. In New Castle, Colorado, during March, snow falls for 8.3 days and regularly aggregates up to 5.16" (131mm) of snow. Throughout the year, in New Castle, there are 58.6 snowfall days, and 36.85" (936mm) of snow is accumulated.

Daylight

In March, the average length of the day is 11h and 59min.
On the first day of the month, sunrise is at 6:41 am and sunset at 6:02 pm MST. On the last day of March, in New Castle, Colorado, sunrise is at 6:54 am and sunset at 7:33 pm MDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from MDT to MST.

Sunshine

In March, the average sunshine is 8.5h.

UV index

January through March, October through 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 low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 2 during March translates into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in New Castle in March?

March temperatures in New Castle vary between a high-temperature of 41.7°F (5.4°C) and a low-temperature of 24.3°F (-4.3°C).

What is the average humidity in March in New Castle?

The average relative humidity in March in New Castle is 74%.

How much does it rain in New Castle in March?

In New Castle, during March, the rain falls for 11.4 days and regularly aggregates up to 1.42" (36mm) of precipitation.

How many days does it snow in March in New Castle?

In New Castle, in March, snow falls for 8.3 days, with typically accumulated 5.16" (131mm) of snow.

What is the average length of the day in March in New Castle?

In New Castle, Colorado, the average day length in March is 11h and 59min.

When is the sunrise / sunset in March in New Castle?

On the first day of March, sunrise is at 6:41 am and sunset at 6:02 pm MST. On the last day of the month, sunrise is at 6:54 am and sunset at 7:33 pm MDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in New Castle, Colorado, and the time zone changes from MST to MDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How many hours of sunshine does New Castle have in March?

The average sunshine duration in March in New Castle is 8.5h.

What is the month with the lowest UV index in New Castle?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in New Castle, Colorado.

What is the UV index intensity in March in New Castle?

The average daily maximum UV index in March is 2. A UV Index reading of 2, and below, represents 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
New Castle, CO

Average temperature in March - New Castle, CO
  • Average high temperature in March: 41.7°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in March: 24.3°F

The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in March
New Castle, CO

Average pressure in March - New Castle, CO
  • Average pressure in March: 30.05"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is May (29.93"Hg).

Average wind speed in March
New Castle, CO

Average wind speed in March - New Castle, CO
  • Average wind speed in March: 5.3mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest month (with the lowest average wind speed) is January (4.1mph).

Average humidity in March
New Castle, CO

Average humidity in March - New Castle, CO
  • Average humidity in March: 74%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is June (43%).

Average rainfall in March
New Castle, CO

Average rainfall in March - New Castle, CO
  • Average rainfall in March: 1.42"

The wettest month (with the highest rainfall) is April (1.57").
The driest month (with the least rainfall) is September (0.51").

Average rainfall days in March
New Castle, CO

Average rainfall days in March - New Castle, CO
  • Average rainfall days in March: 11.4 days

The month with the highest number of rainy days is April (14 days).
The month with the least rainy days is June (5.9 days).

Average snowfall in March
New Castle, CO

Average snowfall in March - New Castle, CO
  • Average snowfall in March: 5.16"

The month with the highest snowfall is February (8.74").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in March
New Castle, CO

Average snowfall days in March - New Castle, CO
  • Average snowfall days in March: 8.3 days

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in March /
Average sunshine in March
New Castle, CO

Average daylight in March / Average sunshine in March - New Castle, CO
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in March: 8h and 3min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

Average sunshine days in March
New Castle, CO

Average sunshine days in March - New Castle, CO
  • Average sunshine days in March: 14.7 days

The month with the most sunshine days is June (20.7 days).
The month with the least sunshine days is April (11.7 days).

Average UV index in March
New Castle, CO

Average UV index in March - New Castle, CO
  • Average UV index in March: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in March
New Castle, CO

Average cloud cover in March - New Castle, CO
  • Average cloud cover in March: 31

The month with the most cloud cover is February (Cloud cover 39).
The months with the least cloud cover are June and September (Cloud cover 12).

Average visibility in March
New Castle, CO

Average visibility in March - New Castle, CO
  • Average visibility in March: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

New Castle, Colorado, USA

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