April weather forecast
Helena, MT

The State Capital building of Montana in Helena city, set on a beautiful natural park
The State Capital building of Montana in Helena city, set on a beautiful natural park

Weather in April

April in Helena, Montana, is a chilly spring month, with an average temperature ranging between min 28.8°F (-1.8°C) and max 47.8°F (8.8°C).

Temperature

In April, the average high-temperature marginally rises from a cold 39.7°F (4.3°C) in March to a chilly 47.8°F (8.8°C). In Helena, in April, the average low-temperature is 28.8°F (-1.8°C).

Humidity

The average relative humidity in April in Helena is 69%.

Rainfall

In Helena, Montana, during 15.1 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 123.7 rainfall days, and 12.4" (315mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Helena, Montana, in April, during 8.8 snowfall days, 5.12" (130mm) of snow is typically accumulated. In Helena, during the entire year, snow falls for 80.4 days and aggregates up to 34.88" (886mm) of snow.

Daylight

In April, the average length of the day is 13h and 37min.
On the first day of April in Helena, sunrise is at 7:06 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:36 pm MDT.

Sunshine

In April, the average sunshine is 9.1h.

UV index

The average daily maximum UV index in April in Helena is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In April, 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 the 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Helena?

The average relative humidity in April is 69%.

How much does it rain in Helena in April?

In April, in Helena, Montana, the rain falls for 15.1 days. Throughout April, 1.5" (38mm) of precipitation is accumulated.

How many days does it snow in April in Helena?

In April, it is snowing for 8.8 days. Throughout April, 5.12" (130mm) of snow is accumulated.

How many hours of daylight does Helena have in April?

In Helena, the average day length in April is 13h and 37min.

When are sunrise and sunset in April in Helena?

On the first day of April in Helena, sunrise is at 7:06 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:36 pm MDT.

How many hours of sunshine does Helena have in April?

In April, the average sunshine duration in Helena is 9.1h.

How high is the UV index in April in Helena?

In April, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Helena, MT

Average temperature in April - Helena, MT
  • Average high temperature in April: 47.8°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (27.7°F).

  • Average low temperature in April: 28.8°F

The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is December (14.2°F).

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Average pressure in April
Helena, MT

Average pressure in April - Helena, MT
  • Average pressure in April: 29.97"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in April
Helena, MT

Average wind speed in April - Helena, MT
  • Average wind speed in April: 6.9mph

The windiest month (with the highest average wind speed) is November (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in April
Helena, MT

Average humidity in April - Helena, MT
  • Average humidity in April: 69%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).

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Average rainfall in April
Helena, MT

Average rainfall in April - Helena, MT
  • Average rainfall in April: 1.5"

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.63").

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Average rainfall days in April
Helena, MT

Average rainfall days in April - Helena, MT
  • Average rainfall days in April: 15.1 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is November (7 days).

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Average snowfall in April
Helena, MT

Average snowfall in April - Helena, MT
  • Average snowfall in April: 5.12"

The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Helena, MT

Average snowfall days in April - Helena, MT
  • Average snowfall days in April: 8.8 days

The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in April /
Average sunshine in April
Helena, MT

Average daylight in April / Average sunshine in April - Helena, MT
  • Average daylight in April: 13h and 37min

The month with the longest days is June (Average daylight: 15h and 46min).
The month with the shortest days is December (Average daylight: 8h and 38min).

  • Average sunshine in April: 9h and 6min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in April
Helena, MT

Average sunshine days in April - Helena, MT
  • Average sunshine days in April: 9.8 days

The month with the most sunshine days is July (20.5 days).
The month with the least sunshine days is April (9.8 days).

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Average UV index in April
Helena, MT

Average UV index in April - Helena, MT
  • Average UV index in April: 2

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in April
Helena, MT

Average cloud cover in April - Helena, MT
  • Average cloud cover in April: 40

The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in April
Helena, MT

Average visibility in April - Helena, MT
  • Average visibility in April: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

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