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
The shift from March to April introduces a subtle increase in the average high-temperature, moving from an icy 38.1°F (3.4°C) to a chilly 46.4°F (8°C). Mammoth experiences a consistent average temperature of 27.7°F (-2.4°C) throughout the nights in April.Humidity
In Mammoth, Montana, the average relative humidity in April is 68%.Rainfall
In Mammoth, during April, the rain falls for 18.6 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, in Mammoth, there are 158 rainfall days, and 12.2" (310mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 1.2 snowfall days, in April, Mammoth aggregates 0.31" (8mm) of snow. Throughout the year, there are 20.8 snowfall days, and 5.12" (130mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 34min.On the first day of the month, sunrise is at 7:06 am and sunset at 7:56 pm. On the last day of April, sunrise is at 6:15 am and sunset at 8:34 pm MDT.
Sunshine
In Mammoth, the average sunshine in April is 9.8h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 2 in April transforms into this advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows in Mammoth?
How many hours of daylight does Mammoth have in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
What are the months with the lowest UV index?
What is the UV index intensity in April?
Average temperature in April
Mammoth, MT
- Average high temperature in April: 46.4°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (26.4°F).
- Average low temperature in April: 27.7°F
The month with the highest average low temperature is July (47.7°F).
The coldest month (with the lowest average low temperature) is December (11.3°F).
Average pressure in April
Mammoth, MT
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Mammoth, MT
- Average wind speed in April: 6.1mph
The windiest month (with the highest average wind speed) is November (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in April
Mammoth, MT
- Average humidity in April: 68%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).
Average rainfall in April
Mammoth, MT
- Average rainfall in April: 1.57"
The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in April
Mammoth, MT
- Average rainfall days in April: 18.6 days
The month with the highest number of rainy days is April (18.6 days).
The month with the least rainy days is August (8.6 days).
Average snowfall in April
Mammoth, MT
- Average snowfall in April: 0.31"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Mammoth, MT
- Average snowfall days in April: 1.2 days
The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Mammoth, MT
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in April: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in April
Mammoth, MT
- Average sunshine days in April: 7.8 days
The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is April (7.8 days).
Average UV index in April
Mammoth, MT
- Average UV index in April: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in April
Mammoth, MT
- Average cloud cover in April: 35
The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility in April
Mammoth, 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).
Mammoth, Montana, USA
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