April weather forecastWestby, MT
April
Weather in April
April in Westby, Montana, is a fresh spring month, with an average temperature varying between 50.2°F (10.1°C) and 33.6°F (0.9°C).Temperature
As Westby welcomes April, the average high-temperature witnesses a distinct rise, moving from a cold 35.4°F (1.9°C) in March to a cool 50.2°F (10.1°C). Throughout April, an average low-temperature of 33.6°F (0.9°C) is experienced in Westby.Humidity
The average relative humidity in April is 63%.Rainfall
In Westby, in April, it is raining for 9.9 days, with typically 1.02" (26mm) of accumulated precipitation. In Westby, Montana, during the entire year, the rain falls for 93.3 days and collects up to 12.01" (305mm) of precipitation.Snowfall
Months with snowfall in Westby are January through May, October through December. In Westby, during April, snow falls for 4.8 days and regularly aggregates up to 1.46" (37mm) of snow. In Westby, during the entire year, snow falls for 66.5 days and aggregates up to 19.02" (483mm) of snow.Daylight
In Westby, the average length of the day in April is 13h and 45min.On the first day of April, sunrise is at 7:31 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 9:10 pm CDT.
Sunshine
In April, the average sunshine in Westby is 8.4h.UV index
In April, the average daily maximum UV index in Westby is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In April, a daily UV index of 3 turns into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Westby, MT
- Average high temperature in April: 50.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is February (19.8°F).
- Average low temperature in April: 33.6°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (6.3°F).
Average pressure in April
Westby, MT
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in April
Westby, MT
- Average wind speed in April: 11.1mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is February (9.2mph).
Average humidity in April
Westby, MT
- Average humidity in April: 63%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is August (46%).
Average rainfall in April
Westby, MT
- Average rainfall in April: 1.02"
The wettest month (with the highest rainfall) is June (2.17").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in April
Westby, MT
- Average rainfall days in April: 9.9 days
The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in April
Westby, MT
- Average snowfall in April: 1.46"
The month with the highest snowfall is November (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Westby, MT
- Average snowfall days in April: 4.8 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Westby, MT
- Average daylight in April: 13h and 42min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in April: 8h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in April
Westby, MT
- Average sunshine days in April: 14 days
The month with the most sunshine days is August (20.1 days).
The months with the least sunshine days are February and June (13.8 days).
Average UV index in April
Westby, MT
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in April
Westby, MT
- Average cloud cover in April: 45
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in April
Westby, MT
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
