April weather forecastHermosa, SD
April
Weather in April
April is a cool spring month in Hermosa, South Dakota, with an average temperature varying between 35.4°F (1.9°C) and 53.2°F (11.8°C).Temperature
With the onset of April, Hermosa's weather sees a minor temperature rise, transitioning from a frosty 45.5°F (7.5°C) in March to a fresh 53.2°F (11.8°C). Hermosa cools down to an average low-temperature of 35.4°F (1.9°C) throughout the month of April.Humidity
In April, the average relative humidity is 66%.Rainfall
In April, the rain falls for 13.7 days. Throughout April, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 118.8 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
Months with snowfall in Hermosa are January through May, September through December. The month with the most snowfall is April, when snow falls for 5.3 days and typically aggregates up to 5.43" (138mm) of snow.Daylight
The average length of the day in April is 13h and 28min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:20 pm. On the last day of April, sunrise is at 5:44 am and sunset at 7:55 pm MDT.
Sunshine
The average sunshine in April is 9.4h.UV index
In Hermosa, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 3 during April leads to these instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Hermosa, SD
- Average high temperature in April: 53.2°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in April: 35.4°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in April
Hermosa, SD
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in April
Hermosa, SD
- Average wind speed in April: 10.3mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in April
Hermosa, SD
- Average humidity in April: 66%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).
Average rainfall in April
Hermosa, SD
- Average rainfall in April: 2.24"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in April
Hermosa, SD
- Average rainfall days in April: 13.7 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).
Average snowfall in April
Hermosa, SD
- Average snowfall in April: 5.43"
The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Hermosa, SD
- Average snowfall days in April: 5.3 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Hermosa, SD
- Average daylight in April: 13h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 9h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in April
Hermosa, SD
- Average sunshine days in April: 11.5 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).
Average UV index in April
Hermosa, 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, February, November and December (UV index 2).
Average cloud cover in April
Hermosa, SD
- Average cloud cover in April: 38
The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in April
Hermosa, SD
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
