April weather forecast and climate
Sweet Grass, MT

Weather in April

April in Sweet Grass, Montana, is a chilly spring month, with average temperature varying between 49.6°F (9.8°C) and 34°F (1.1°C).

Temperature

In April, the average high-temperature rises, from a wintry 39°F (3.9°C) in March, to a frosty 49.6°F (9.8°C). In Sweet Grass, in April, the average low-temperature is 34°F (1.1°C).

Humidity

In Sweet Grass, Montana, the average relative humidity in April is 62%.

Rainfall

In Sweet Grass, during April, the rain falls for 8.3 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, in Sweet Grass, there are 70.4 rainfall days, and 8.46" (215mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In April, in Sweet Grass, it is snowing for 5 days. Throughout April, 2.44" (62mm) of snow is accumulated. Throughout the year, there are 54.3 snowfall days, and 19.49" (495mm) of snow is accumulated.

Daylight

In Sweet Grass, the average length of the day is 13.8h.

Sunshine

In April, the average sunshine is 9.3h.

UV index

In April, the average daily maximum UV index in Sweet Grass is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 3 in April transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in April in Sweet Grass?

In Sweet Grass, Montana, in April, the average high-temperature is 49.6°F (9.8°C), and the average low-temperature is 34°F (1.1°C).

What is the average humidity in April in Sweet Grass?

The average relative humidity in April in Sweet Grass is 62%.

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

In Sweet Grass, in April, it is raining for 8.3 days, with typically 0.94" (24mm) of accumulated precipitation.

How many days does it snow in April in Sweet Grass?

In Sweet Grass, in April, during 5 snowfall days, 2.44" (62mm) of snow is typically accumulated.

How many hours of daylight does Sweet Grass have in April?

The average length of the day in April in Sweet Grass, Montana, is 13.8h.

How long on average sun shines in April in Sweet Grass?

In Sweet Grass, the average sunshine in April is 9.3h.

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

In Sweet Grass, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in April
Sweet Grass, MT

Average temperature in April - Sweet Grass, MT
  • Average high temperature in April: 49.6°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in April: 34°F

The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (15.3°F).

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Average pressure in April
Sweet Grass, MT

Average pressure in April - Sweet Grass, MT
  • Average pressure in April: 29.95"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in April
Sweet Grass, MT

Average wind speed in April - Sweet Grass, MT
  • Average wind speed in April: 11.2mph

The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.8mph).

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Average humidity in April
Sweet Grass, MT

Average humidity in April - Sweet Grass, MT
  • Average humidity in April: 62%

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

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Average rainfall in April
Sweet Grass, MT

Average rainfall in April - Sweet Grass, MT
  • Average rainfall in April: 0.94"

The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in April
Sweet Grass, MT

Average rainfall days in April - Sweet Grass, MT
  • Average rainfall days in April: 8.3 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).

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Average snowfall in April
Sweet Grass, MT

Average snowfall in April - Sweet Grass, MT
  • Average snowfall in April: 2.44"

The month with the highest snowfall is February (3.58").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Sweet Grass, MT

Average snowfall days in April - Sweet Grass, MT
  • Average snowfall days in April: 5 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).

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Average daylight in April /
Average sunshine in April
Sweet Grass, MT

Average daylight in April / Average sunshine in April - Sweet Grass, MT
  • Average daylight in April: 13.8h

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 April: 9.3h

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

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Average sunshine days in April
Sweet Grass, MT

Average sunshine days in April - Sweet Grass, MT
  • Average sunshine days in April: 17.4 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).

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Average UV index in April
Sweet Grass, MT

Average UV index in April - Sweet Grass, MT
  • Average UV index in April: 3

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).

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Average cloud cover in April
Sweet Grass, MT

Average cloud cover in April - Sweet Grass, MT
  • Average cloud cover in April: 37

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

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Average visibility in April
Sweet Grass, MT

Average visibility in April - Sweet Grass, MT
  • Average visibility in April: 6mi

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

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