March weather forecast and climate
Sweet Grass, MT

March, the first month of the spring, in Sweet Grass, is a wintry month, with average temperature fluctuating between 24.8°F (-4°C) and 39°F (3.9°C).

Temperature

In Sweet Grass, the average high-temperature in March increases, from a subzero cold 28.8°F (-1.8°C) in February, to a wintry 39°F (3.9°C). The average low-temperature, in Sweet Grass, is 24.8°F (-4°C).

Humidity

The average relative humidity in March is 72%.

Rainfall

In Sweet Grass, Montana, during March, the rain falls for 5.1 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Sweet Grass, during the entire year, the rain falls for 70.4 days and collects up to 8.46" (215mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Sweet Grass. In Sweet Grass, in March, during 7.9 snowfall days, 2.05" (52mm) of snow is typically accumulated. In Sweet Grass, during the entire year, snow falls for 54.3 days, and aggregates up to 19.49" (495mm) of snow.

Daylight

In March, the average length of the day is 12h.

Sunshine

The average sunshine in Sweet Grass is 7.6h.

UV index

Months with the lowest UV index in Sweet Grass are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In March, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in March in Sweet Grass?

In Sweet Grass, in March, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 24.8°F (-4°C).

What is the average humidity in March in Sweet Grass?

The average relative humidity in March is 72%.

How many days does it rain in March in Sweet Grass?

In Sweet Grass, Montana, in March, it is raining for 5.1 days, with typically 0.55" (14mm) of accumulated precipitation.

How much does it snow in Sweet Grass in March?

In March, in Sweet Grass, Montana, it is snowing for 7.9 days. Throughout March, 2.05" (52mm) of snow is accumulated.

What is the average length of the day in March in Sweet Grass?

In Sweet Grass, the average length of the day in March is 12h.

How many hours of sunshine does Sweet Grass have in March?

In March, the average sunshine is 7.6h.

When is the lowest UV index in Sweet Grass?

Months with the lowest UV index in Sweet Grass are January through March, October through December, with an average maximum UV index of 2.

What is the UV index reading in March in Sweet Grass?

The average daily maximum UV index in March in Sweet Grass, Montana, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the UV radiation.
Average temperature in March - Sweet Grass, MT
  • Average high temperature in March: 3.9°C

The warmest month (with the highest average high temperature) is July (26°C).
The month with the lowest average high temperature is December (-2.7°C).

  • Average low temperature in March: -4°C

The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is December (-9.3°C).

Average pressure in March - Sweet Grass, MT
  • Average pressure in March: 1016.2mbar

The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is June (1011.5mbar).

Average wind speed in March - Sweet Grass, MT
  • Average wind speed in March: 17km/h

The windiest month (with the highest average wind speed) is January (19km/h).
The calmest month (with the lowest average wind speed) is August (14.1km/h).

Average humidity in March - Sweet Grass, MT
  • Average humidity in March: 72%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (43%).

Average rainfall in March - Sweet Grass, MT
  • Average rainfall in March: 14mm

The wettest month (with the highest rainfall) is June (45mm).
The driest month (with the least rainfall) is July (8mm).

Average rainfall days in March - Sweet Grass, MT
  • Average rainfall days in March: 5.1 days

The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is November (2.6 days).

Average snowfall in March - Sweet Grass, MT
  • Average snowfall in March: 52mm

The month with the highest snowfall is February (91mm).
Months with the least snowfall are June, July and August (0mm).

Average snowfall days in March - Sweet Grass, MT
  • Average snowfall days in March: 7.9 days

The month with the highest number of snowfall days is December (10.2 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in March / Average sunshine in March - Sweet Grass, MT
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in March: 7.6h

The month with the most sunshine is July (Average sunshine: 12h).
Months with the least sunshine are January and December (Average sunshine: 5.6).

Average sunshine days in March - Sweet Grass, MT
  • Average sunshine days in March: 19.5 days

The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is April (17.4 days).

Average UV index in March - Sweet Grass, MT
  • Average UV index in March: 2

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

Average cloud cover in March - Sweet Grass, MT
  • Average cloud cover in March: 39

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 15).

Average visibility in March - Sweet Grass, MT
  • Average visibility in March: 9km

Months with the highest visibility are May, June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March, April, November and December (9km).