April weather forecastAltamont, SD
April
Weather in April
April is a fresh spring month in Altamont, South Dakota, with an average temperature ranging between min 37°F (2.8°C) and max 53.2°F (11.8°C).Temperature
Altamont's transition into April brings a rise in the average high-temperature, moving from a wintry 39°F (3.9°C) in March to a cool 53.2°F (11.8°C). Altamont throughout April, records an average low-temperature of 37°F (2.8°C).Humidity
The average relative humidity in April in Altamont, South Dakota, is 68%.Rainfall
In Altamont, in April, it is raining for 11.1 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, in Altamont, there are 101.9 rainfall days, and 14.61" (371mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In April, in Altamont, South Dakota, it is snowing for 3.3 days. Throughout April, 1.34" (34mm) of snow is accumulated. Throughout the year, there are 49.9 snowfall days, and 14.02" (356mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 31min.On the first day of April, sunrise is at 7:05 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:31 pm CDT.
Sunshine
In Altamont, the average sunshine in April is 7.8h.UV index
The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 3 during April, leads to the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Altamont, SD
- Average high temperature in April: 53.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).
- Average low temperature in April: 37°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in April
Altamont, SD
- Average pressure in April: 29.95"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in April
Altamont, SD
- Average wind speed in April: 10.9mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in April
Altamont, SD
- Average humidity in April: 68%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in April
Altamont, SD
- Average rainfall in April: 1.34"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in April
Altamont, SD
- Average rainfall days in April: 11.1 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in April
Altamont, SD
- Average snowfall in April: 1.34"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Altamont, SD
- Average snowfall days in April: 3.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Altamont, SD
- Average daylight in April: 13h and 30min
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 48min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in April
Altamont, SD
- Average sunshine days in April: 15.3 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in April
Altamont, SD
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in April
Altamont, SD
- Average cloud cover in April: 46
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in April
Altamont, SD
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
