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
Entering April, Roy notices a subtle temperature elevation, with the average high-temperature advancing from March's cold 40.6°F (4.8°C) to a chilly 47.8°F (8.8°C). Roy, during the month of April, experiences an average low-temperature of 31.8°F (-0.1°C).Humidity
The average relative humidity in April is 68%.Rainfall
In Roy, during April, the rain falls for 14.8 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in Roy, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. April is the month with the most snowfall in Roy, Montana. Snow falls for 10 days and accumulates 9.13" (232mm) of snow.Daylight
In April, the average length of the day is 13h and 40min.On the first day of April in Roy, sunrise is at 6:52 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:26 pm MDT.
Sunshine
The average sunshine in April in Roy is 9h.UV index
The months with the lowest UV index in Roy, Montana, are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 2 in April, converts into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Roy in April?
What is the average humidity in April in Roy?
How much does it rain in Roy in April?
When does it snow the most in Roy?
How much does it snow in Roy in April?
How many hours of daylight does Roy have in April?
When is the sunrise / sunset in April in Roy?
How long on average sun shines in April in Roy?
When is the lowest UV index in Roy?
What is the UV index reading in April in Roy?
Average temperature in April
Roy, MT
- Average high temperature in April: 47.8°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in April: 31.8°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in April
Roy, 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 (29.85"Hg).
Average wind speed in April
Roy, MT
- Average wind speed in April: 9.9mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in April
Roy, MT
- Average humidity in April: 68%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in April
Roy, MT
- Average rainfall in April: 2.36"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in April
Roy, MT
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in April
Roy, MT
- Average snowfall in April: 9.13"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in April
Roy, MT
- Average snowfall days in April: 10 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Roy, MT
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in April: 9h and 0min
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 30min).
Average sunshine days in April
Roy, MT
- Average sunshine days in April: 8.3 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in April
Roy, 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, March, April, October, November and December (UV index 2).
Average cloud cover in April
Roy, MT
- Average cloud cover in April: 42
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in April
Roy, 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).
Roy, Montana, USA
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