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
As Grenville transitions into April, the average high-temperature is observed to rise from an icy 37.6°F (3.1°C) in March to a fresh 51.1°F (10.6°C). The nighttime temperature, during April, averages of 35.1°F (1.7°C).Humidity
In Grenville, South Dakota, the average relative humidity in April is 70%.Rainfall
In Grenville, South Dakota, during April, the rain falls for 11.3 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Grenville, during the entire year, the rain falls for 112.9 days and collects up to 22.09" (561mm) of precipitation.Snowfall
Months with snowfall in Grenville are January through May, October through December. In Grenville, South Dakota, during April, snow falls for 5.8 days and regularly aggregates up to 2.64" (67mm) of snow. Throughout the year, there are 68.4 snowfall days, and 23.74" (603mm) of snow is accumulated.Daylight
In Grenville, the average length of the day in April is 13h and 34min.On the first day of the month, sunrise is at 7:08 am and sunset at 7:58 pm. On the last day of April, in Grenville, sunrise is at 6:17 am and sunset at 8:35 pm CDT.
Sunshine
The average sunshine in April in Grenville is 7.3h.UV index
The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 3 in April translates into this advice:
Take necessary precautions - Defending against sun damage is advocated. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What are the temperatures in Grenville in April?
What is the average humidity in April in Grenville?
How many days does it rain in April in Grenville?
How many days does it snow in April in Grenville?
What is the average length of the day in April in Grenville?
What time are sunrise and sunset in April in Grenville?
How long on average sun shines in April in Grenville?
What is the UV index reading in April in Grenville?
Average temperature in April
Grenville, SD
- Average high temperature in April: 51.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in April: 35.1°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in April
Grenville, SD
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in April
Grenville, SD
- Average wind speed in April: 11.7mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).
Average humidity in April
Grenville, SD
- Average humidity in April: 70%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is September (66%).
Average rainfall in April
Grenville, SD
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in April
Grenville, SD
- Average rainfall days in April: 11.3 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in April
Grenville, SD
- Average snowfall in April: 2.64"
The month with the highest snowfall is December (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Grenville, SD
- Average snowfall days in April: 5.8 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Grenville, SD
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in April: 7h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in April
Grenville, SD
- Average sunshine days in April: 13 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in April
Grenville, 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, November and December (UV index 1).
Average cloud cover in April
Grenville, SD
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in April
Grenville, SD
- 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).
Grenville, South Dakota, USA
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