Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April brings a rise in Custer's average high-temperature, moving from a frosty 45.5°F (7.5°C) in March to a cool 55.2°F (12.9°C). During April, Custer records a consistent average nighttime temperature of 37.6°F (3.1°C).Humidity
In April, the average relative humidity is 58%.Rainfall
In Custer, Montana, during April, the rain falls for 13.7 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 107 rainfall days, and 12.17" (309mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Custer, in April, snow falls for 3.8 days, with typically accumulated 2.4" (61mm) of snow. Throughout the year, there are 48.3 snowfall days, and 17.68" (449mm) of snow is accumulated.Daylight
The average length of the day in April in Custer, Montana, is 13h and 35min.On the first day of April, sunrise is at 6:48 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:17 pm MDT.
Sunshine
In Custer, the average sunshine in April is 9.1h.UV index
In April, the average daily maximum UV index in Custer, Montana, is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 3 in April translates into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. When the Sun is at its strongest around midday, find shade and limit exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What is the average April temperature in Custer?
What is the average humidity in April in Custer?
How many days does it rain in April in Custer?
How much does it snow in Custer in April?
What is the average length of the day in April in Custer?
When is the sunrise / sunset in April in Custer?
How many hours of sunshine does Custer have in April?
What is the UV index intensity in April in Custer?
Average temperature in April
Custer, MT
- Average high temperature in April: 55.2°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The months with the lowest average high temperature are January and December (31.1°F).
- Average low temperature in April: 37.6°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in April
Custer, MT
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in April
Custer, MT
- Average wind speed in April: 10.2mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).
Average humidity in April
Custer, MT
- Average humidity in April: 58%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).
Average rainfall in April
Custer, MT
- Average rainfall in April: 1.5"
The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is December (0.55").
Average rainfall days in April
Custer, MT
- Average rainfall days in April: 13.7 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is December (4.5 days).
Average snowfall in April
Custer, MT
- Average snowfall in April: 2.4"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Custer, MT
- Average snowfall days in April: 3.8 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Custer, MT
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in April: 9h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in April
Custer, MT
- Average sunshine days in April: 13.5 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is April (13.5 days).
Average UV index in April
Custer, MT
- Average UV index in April: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Custer, MT
- Average cloud cover in April: 41
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in April
Custer, MT
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Custer, Montana, USA
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