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, Riverside notices a subtle temperature elevation, with the average high-temperature advancing from March's freezing cold 30°F (-1.1°C) to a cold 37.2°F (2.9°C). Riverside, in April, experiences an average temperature of 19.6°F (-6.9°C) at night.Humidity
In April, the average relative humidity is 88%.Rainfall
In Riverside, in April, during 9.8 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 109.2 rainfall days, and 23.15" (588mm) of precipitation is accumulated.Snowfall
January through July, September through December are months with snowfall. In Riverside, during April, snow falls for 19.9 days and regularly aggregates up to 17.05" (433mm) of snow. In Riverside, during the entire year, snow falls for 159.3 days and aggregates up to 120.47" (3060mm) of snow.Daylight
In Riverside, the average length of the day in April is 13h and 31min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:52 pm. On the last day of April, sunrise is at 6:14 am and sunset at 8:28 pm MDT.
Sunshine
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 health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 1 during April, leads to the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in April?
What is the average humidity in April?
How many days does it rain in April?
How much does it snow in April?
How many hours of daylight does Riverside have in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Riverside have in April?
When is the lowest UV index?
How high is the UV index in April?
Average temperature in April
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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
Riverside, 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).
Riverside, Montana, USA
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