March weather forecast
Roy, MT

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Weather in March

The first month of the spring, March, is a cold month in Roy, Montana, with an average temperature ranging between max 40.6°F (4.8°C) and min 25.3°F (-3.7°C).

Temperature

Observing a rise in March, the average high-temperature goes from February's subzero cold 29.1°F (-1.6°C) to a cold 40.6°F (4.8°C). In March, Roy reports a consistent average low-temperature of 25.3°F (-3.7°C) during the nights.

Humidity

The average relative humidity in March in Roy is 74%.

Rainfall

In March, in Roy, the rain falls for 10.4 days. Throughout March, 1.14" (29mm) of precipitation is accumulated. Throughout the year, in Roy, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Roy, in March, during 12.7 snowfall days, 5.63" (143mm) of snow is typically accumulated. Throughout the year, there are 83.4 snowfall days, and 45.51" (1156mm) of snow is accumulated.

Daylight

In March, the average length of the day in Roy is 11h and 57min.
On the first day of the month, sunrise is at 6:54 am and sunset at 6:01 pm MST. On the last day of March, in Roy, sunrise is at 6:54 am and sunset at 7:44 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

The average sunshine in March is 7.6h.

UV index

The months with the lowest UV index in Roy are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In March, the average maximum UV index of 2 translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold in Roy during March?

During March, Roy experiences an average high-temperature of 40.6°F (4.8°C) and a low-temperature of 25.3°F (-3.7°C).

What is the average humidity in March in Roy?

In Roy, Montana, the average relative humidity in March is 74%.

How much does it rain in Roy in March?

In March, in Roy, the rain falls for 10.4 days. Throughout March, 1.14" (29mm) of precipitation is accumulated.

How much does it snow in Roy in March?

In Roy, Montana, in March, snow falls for 12.7 days, with typically accumulated 5.63" (143mm) of snow.

How many hours of daylight does Roy have in March?

In Roy, the average day length in March is 11h and 57min.

When is the sunrise / sunset in March in Roy?

In March, on the first day of the month, sunrise is at 6:54 am and sunset at 6:01 pm MST. On the last day of the month, in Roy, sunrise is at 6:54 am and sunset at 7:44 pm MDT.

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

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

In Roy, Montana, the average sunshine duration in March is 7.6h.

When is the lowest UV index in Roy?

The months with the lowest UV index in Roy, Montana, are January through April, October through December, with an average maximum UV index of 2.

What is the UV index intensity in March in Roy?

In March, the average daily maximum UV index in Roy, Montana, is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to 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
Roy, MT

Average temperature in March - Roy, MT
  • Average high temperature in March: 40.6°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).

  • Average low temperature in March: 25.3°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).

Average pressure in March
Roy, MT

Average pressure in March - Roy, MT
  • Average pressure in March: 30.01"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in March
Roy, MT

Average wind speed in March - Roy, MT
  • Average wind speed in March: 9.2mph

The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).

Average humidity in March
Roy, MT

Average humidity in March - Roy, MT
  • Average humidity in March: 74%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).

Average rainfall in March
Roy, MT

Average rainfall in March - Roy, MT
  • Average rainfall in March: 1.14"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in March
Roy, MT

Average rainfall days in March - Roy, MT
  • Average rainfall days in March: 10.4 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).

Average snowfall in March
Roy, MT

Average snowfall in March - Roy, MT
  • Average snowfall in March: 5.63"

The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").

Average snowfall days in March
Roy, MT

Average snowfall days in March - Roy, MT
  • Average snowfall days in March: 12.7 days

The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in March /
Average sunshine in March
Roy, MT

Average daylight in March / Average sunshine in March - Roy, MT
  • Average daylight in March: 11h and 5min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in March: 7h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

Average sunshine days in March
Roy, MT

Average sunshine days in March - Roy, MT
  • Average sunshine days in March: 10.5 days

The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).

Average UV index in March
Roy, MT

Average UV index in March - Roy, MT
  • Average UV index in March: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in March
Roy, MT

Average cloud cover in March - Roy, MT
  • Average cloud cover in March: 41

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).

Average visibility in March
Roy, MT

Average visibility in March - Roy, MT
  • 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).

Roy, Montana, USA

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