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
West Yellowstone, Montana, in April denotes a subtle temperature transition, adjusting from an average high of a subzero cold 30°F (-1.1°C) in March to a wintry 37.2°F (2.9°C). In April, the nighttime temperature lowers to an average of 19.6°F (-6.9°C).Humidity
The average relative humidity in April in West Yellowstone is 88%.Rainfall
In West Yellowstone, during April, the rain falls for 9.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. In West Yellowstone, Montana, during the entire year, the rain falls for 109.2 days and collects up to 23.15" (588mm) of precipitation.Snowfall
Months with snowfall are January through July, September through December. In West Yellowstone, Montana, during April, snow falls for 19.9 days and regularly aggregates up to 17.05" (433mm) of snow. In West Yellowstone, Montana, during the entire year, snow falls for 159.3 days and aggregates up to 120.47" (3060mm) of snow.Daylight
In April, the average length of the day in West Yellowstone is 13h and 31min.On the first day of April, sunrise is at 7:03 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:28 pm MDT.
Sunshine
In West Yellowstone, the average sunshine in April is 7.2h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In April, the maximum UV index of 1 translates into these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is April in West Yellowstone?
What is the average humidity in April in West Yellowstone?
How much does it rain in West Yellowstone in April?
How much does it snow in West Yellowstone in April?
How many hours of daylight does West Yellowstone have in April?
When are sunrise and sunset in April in West Yellowstone?
How long on average sun shines in April in West Yellowstone?
When is the lowest UV index in West Yellowstone?
How high is the UV index in April in West Yellowstone?
Average temperature in April
West Yellowstone, MT
- Average high temperature in April: 37.2°F
The warmest month (with the highest average high temperature) is July (72.9°F).
The month with the lowest average high temperature is December (20.1°F).
- Average low temperature in April: 19.6°F
The month with the highest average low temperature is August (43.7°F).
The coldest month (with the lowest average low temperature) is December (4.8°F).
Average pressure in April
West Yellowstone, MT
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
West Yellowstone, MT
- Average wind speed in April: 6.2mph
The windiest month (with the highest average wind speed) is June (6.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in April
West Yellowstone, MT
- Average humidity in April: 88%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is August (50%).
Average rainfall in April
West Yellowstone, MT
- Average rainfall in April: 2.6"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in April
West Yellowstone, MT
- Average rainfall days in April: 9.8 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (2.2 days).
Average snowfall in April
West Yellowstone, MT
- Average snowfall in April: 17.05"
The month with the highest snowfall is February (17.83").
The month with the least snowfall is August (0").
Average snowfall days in April
West Yellowstone, MT
- Average snowfall days in April: 19.9 days
The month with the highest number of snowfall days is March (24.4 days).
The months with the least snowfall days are July and August (0.2 days).
Average daylight in April /
Average sunshine in April
West Yellowstone, MT
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 7h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 18min).
Average sunshine days in April
West Yellowstone, MT
- Average sunshine days in April: 5.5 days
The months with the most sunshine days are July and September (14.7 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in April
West Yellowstone, MT
- Average UV index in April: 1
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 1).
Average cloud cover in April
West Yellowstone, MT
- Average cloud cover in April: 54
The month with the most cloud cover is February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in April
West Yellowstone, MT
- Average visibility in April: 4mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (3mi).
West Yellowstone, Montana, USA
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