April weather forecast
Halfmoon, MT

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Weather in April

April in Halfmoon, Montana, is a chilly spring month, with an average temperature varying between 28°F (-2.2°C) and 46.6°F (8.1°C).

Temperature

As Halfmoon transitions into April, a rise in the average high-temperature is observed, moving from an icy 36.1°F (2.3°C) in March to a frosty 46.6°F (8.1°C). In April, in Halfmoon, the average low-temperature is a freezing cold 28°F (-2.2°C).

Humidity

In Halfmoon, the average relative humidity in April is 78%.

Rainfall

In Halfmoon, in April, it is raining for 15.8 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, there are 126.4 rainfall days, and 11.22" (285mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Halfmoon, Montana, in April, during 7.4 snowfall days, 2.09" (53mm) of snow is typically accumulated. In Halfmoon, Montana, during the entire year, snow falls for 97 days and aggregates up to 33.86" (860mm) of snow.

Daylight

The average length of the day in April is 13h and 43min.
On the first day of April, sunrise is at 7:12 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:50 pm MDT.

Sunshine

The average sunshine in April in Halfmoon is 8.6h.

UV index

In Halfmoon, Montana, the average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 2 in April translates into this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. 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. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What are the temperatures in Halfmoon in April?

In Halfmoon, 46.6°F (8.1°C) is the average high-temperature and 28°F (-2.2°C) is the average low-temperature during April.

What is the average humidity in April in Halfmoon?

In April, the average relative humidity in Halfmoon is 78%.

How many days does it rain in April in Halfmoon?

In Halfmoon, Montana, during April, the rain falls for 15.8 days and regularly aggregates up to 0.98" (25mm) of precipitation.

How many days does it snow in April in Halfmoon?

In April, in Halfmoon, it is snowing for 7.4 days. Throughout April, 2.09" (53mm) of snow is accumulated.

How many hours of daylight does Halfmoon have in April?

The average day length in April is 13h and 43min.

When is the sunrise / sunset in April in Halfmoon?

On the first day of April, sunrise is at 7:12 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:50 pm MDT.

How many hours of sunshine does Halfmoon have in April?

In April, the average sunshine duration in Halfmoon is 8.6h.

What is the UV index reading in April in Halfmoon?

The average daily maximum UV index in April in Halfmoon, Montana, is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's 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 April
Halfmoon, MT

Average temperature in April - Halfmoon, MT
  • Average high temperature in April: 46.6°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in April: 28°F

The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).

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Average pressure in April
Halfmoon, MT

Average pressure in April - Halfmoon, MT
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in April
Halfmoon, MT

Average wind speed in April - Halfmoon, MT
  • Average wind speed in April: 4.6mph

The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).

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Average humidity in April
Halfmoon, MT

Average humidity in April - Halfmoon, MT
  • Average humidity in April: 78%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in April
Halfmoon, MT

Average rainfall in April - Halfmoon, MT
  • Average rainfall in April: 0.98"

The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").

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Average rainfall days in April
Halfmoon, MT

Average rainfall days in April - Halfmoon, MT
  • Average rainfall days in April: 15.8 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).

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Average snowfall in April
Halfmoon, MT

Average snowfall in April - Halfmoon, MT
  • Average snowfall in April: 2.09"

The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Halfmoon, MT

Average snowfall days in April - Halfmoon, MT
  • Average snowfall days in April: 7.4 days

The month with the highest number of snowfall days is December (19.1 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
Halfmoon, MT

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in April: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in April
Halfmoon, MT

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

The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).

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Average UV index in April
Halfmoon, MT

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

The month with the highest UV index is July (UV index 6).
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
Halfmoon, MT

Average cloud cover in April - Halfmoon, MT
  • Average cloud cover in April: 44

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in April
Halfmoon, MT

Average visibility in April - Halfmoon, MT
  • Average visibility in April: 5mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).

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Halfmoon, Montana, USA

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