April weather forecastDarby, MT
April
Weather in April
April in Darby, Montana, is a frosty spring month, with an average temperature varying between 43.5°F (6.4°C) and 25.9°F (-3.4°C).Temperature
The start of April signals a slight increase in the average high-temperature, moving from a wintry 36°F (2.2°C) in March to a chilly 43.5°F (6.4°C). Darby's temperature tends to fall to an average low of 25.9°F (-3.4°C) during the nights of April.Humidity
In Darby, Montana, the average relative humidity in April is 79%.Rainfall
The wettest months are February and April, with an average 2.36" (60mm) of rainfall.Snowfall
Months with snowfall are January through May, September through December. In Darby, in April, during 10.3 snowfall days, 5.67" (144mm) of snow is typically accumulated. Throughout the year, there are 101.1 snowfall days, and 59.17" (1503mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 35min.On the first day of the month, sunrise is at 7:14 am and sunset at 8:05 pm. On the last day of April, sunrise is at 6:23 am and sunset at 8:44 pm MDT.
Sunshine
In April, the average sunshine is 8.9h.UV index
In April, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in April interprets into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Darby, MT
- Average high temperature in April: 43.5°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in April: 25.9°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in April
Darby, MT
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Darby, MT
- Average wind speed in April: 5mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in April
Darby, MT
- Average humidity in April: 79%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in April
Darby, MT
- Average rainfall in April: 2.36"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in April
Darby, MT
- Average rainfall days in April: 18.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in April
Darby, MT
- Average snowfall in April: 5.67"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Darby, MT
- Average snowfall days in April: 10.3 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Darby, MT
- Average daylight in April: 13h and 36min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in April: 8h and 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in April
Darby, MT
- Average sunshine days in April: 6.9 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in April
Darby, 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 February and December (UV index 1).
Average cloud cover in April
Darby, MT
- Average cloud cover in April: 43
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in April
Darby, MT
- Average visibility in April: 5mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
