April weather forecast
Big Arm, MT

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Weather in April

April is a frosty spring month in Big Arm, Montana, with temperature in the range of an average high of 48.7°F (9.3°C) and an average low of 30.2°F (-1°C).

Temperature

In Big Arm, the onset of April comes with an increased average high-temperature, moving from March's wintry 38.8°F (3.8°C) to a chilly 48.7°F (9.3°C). Big Arm, in April, observes a steady average low-temperature of 30.2°F (-1°C).

Humidity

In Big Arm, the average relative humidity in April is 75%.

Rainfall

In April, the rain falls for 18.8 days. Throughout April, 2.05" (52mm) of precipitation is accumulated. Throughout the year, there are 160.2 rainfall days, and 18.11" (460mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Big Arm, in April, during 8.3 snowfall days, 3.27" (83mm) of snow is typically accumulated. Throughout the year, in Big Arm, there are 99 snowfall days, and 47.28" (1201mm) of snow is accumulated.

Daylight

In April, the average length of the day in Big Arm is 13h and 41min.
On the first day of April, sunrise is at 7:13 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:49 pm MDT.

Sunshine

In Big Arm, the average sunshine in April is 8.9h.

UV index

The average daily maximum UV index in April in Big Arm is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 2 in April transforms into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

What is the temperature in April in Big Arm?

April temperatures in Big Arm vary between a high-temperature of 48.7°F (9.3°C) and a low-temperature of 30.2°F (-1°C).

What is the average humidity in April in Big Arm?

The average relative humidity in April is 75%.

How many days does it rain in April in Big Arm?

In Big Arm, in April, during 18.8 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

How many days does it snow in April in Big Arm?

In Big Arm, during April, snow falls for 8.3 days and regularly aggregates up to 3.27" (83mm) of snow.

How many hours of daylight does Big Arm have in April?

In Big Arm, the average day length in April is 13h and 41min.

When is the sunrise / sunset in April in Big Arm?

On the first day of April in Big Arm, sunrise is at 7:13 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:49 pm MDT.

How long on average sun shines in April in Big Arm?

In Big Arm, Montana, the average sunshine duration in April is 8.9h.

What is the UV index reading in April in Big Arm?

In Big Arm, Montana, the average daily maximum UV index in April is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
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 April
Big Arm, MT

Average temperature in April - Big Arm, MT
  • Average high temperature in April: 48.7°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in April: 30.2°F

The months with the highest average low temperature are July and August (48.9°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).

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Average pressure in April
Big Arm, MT

Average pressure in April - Big Arm, MT
  • Average pressure in April: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in April
Big Arm, MT

Average wind speed in April - Big Arm, MT
  • Average wind speed in April: 4.8mph

The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in April
Big Arm, MT

Average humidity in April - Big Arm, MT
  • Average humidity in April: 75%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (51%).

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Average rainfall in April
Big Arm, MT

Average rainfall in April - Big Arm, MT
  • Average rainfall in April: 2.05"

The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.55").

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Average rainfall days in April
Big Arm, MT

Average rainfall days in April - Big Arm, MT
  • Average rainfall days in April: 18.8 days

The months with the highest number of rainy days are March and April (18.8 days).
The month with the least rainy days is August (7 days).

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Average snowfall in April
Big Arm, MT

Average snowfall in April - Big Arm, MT
  • Average snowfall in April: 3.27"

The month with the highest snowfall is February (10.28").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Big Arm, MT

Average snowfall days in April - Big Arm, MT
  • Average snowfall days in April: 8.3 days

The month with the highest number of snowfall days is December (19.8 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in April /
Average sunshine in April
Big Arm, MT

Average daylight in April / Average sunshine in April - Big Arm, MT
  • Average daylight in April: 13h and 4min

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 April: 8h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in April
Big Arm, MT

Average sunshine days in April - Big Arm, MT
  • Average sunshine days in April: 7.7 days

The month with the most sunshine days is July (21.3 days).
The month with the least sunshine days is March (6.4 days).

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Average UV index in April
Big Arm, MT

Average UV index in April - Big Arm, MT
  • Average UV index in April: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in April
Big Arm, MT

Average cloud cover in April - Big Arm, MT
  • Average cloud cover in April: 42

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 14).

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Average visibility in April
Big Arm, MT

Average visibility in April - Big Arm, MT
  • Average visibility in April: 6mi

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

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Big Arm, Montana, USA

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