April weather forecastHerreid, SD
April
Weather in April
April in Herreid, South Dakota, is a fresh spring month, with temperature in the range of an average low of 36.9°F (2.7°C) and an average high of 54.1°F (12.3°C).Temperature
Herreid's weather in April shows a rise in the average high-temperature, moving up from March's wintry 40.5°F (4.7°C) to a cool 54.1°F (12.3°C). Herreid's temperature drops to an average low of 36.9°F (2.7°C) during the nights of April.Humidity
In April, the average relative humidity is 64%.Rainfall
In Herreid, in April, it is raining for 10.4 days, with typically 1.57" (40mm) of accumulated precipitation. In Herreid, during the entire year, the rain falls for 89.4 days and collects up to 15.39" (391mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In April, it is snowing for 3.6 days. Throughout April, 2.8" (71mm) of snow is accumulated. Throughout the year, in Herreid, there are 49.4 snowfall days, and 19.09" (485mm) of snow is accumulated.Daylight
In Herreid, the average length of the day in April is 13h and 35min.On the first day of the month, sunrise is at 7:18 am and sunset at 8:09 pm. On the last day of April, sunrise is at 6:27 am and sunset at 8:47 pm CDT.
Sunshine
In Herreid, the average sunshine in April is 7.8h.UV index
In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 3 during April leads to these advisories:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Herreid, SD
- Average high temperature in April: 54.1°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).
- Average low temperature in April: 36.9°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in April
Herreid, 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 (29.84"Hg).
Average wind speed in April
Herreid, SD
- Average wind speed in April: 11.5mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).
Average humidity in April
Herreid, SD
- Average humidity in April: 64%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).
Average rainfall in April
Herreid, SD
- Average rainfall in April: 1.57"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in April
Herreid, SD
- Average rainfall days in April: 10.4 days
The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in April
Herreid, SD
- Average snowfall in April: 2.8"
The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Herreid, SD
- Average snowfall days in April: 3.6 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Herreid, SD
- 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: 7h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Herreid, SD
- Average sunshine days in April: 14.6 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).
Average UV index in April
Herreid, SD
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Herreid, SD
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility in April
Herreid, 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).
