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
April brings an increase in the average high-temperature, progressing from a chilly 46.9°F (8.3°C) in March to a mild 57.9°F (14.4°C). During April, Napa Junction experiences an average low-temperature of 40.1°F (4.5°C) at night.Humidity
The average relative humidity in April is 68%.Rainfall
In Napa Junction, during April, the rain falls for 12.2 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 117.9 rainfall days, and 21.93" (557mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Napa Junction, in April, during 2.4 snowfall days, 2.13" (54mm) of snow is typically accumulated. In Napa Junction, during the entire year, snow falls for 37.4 days and aggregates up to 14.45" (367mm) of snow.Daylight
The average length of the day in April is 13h and 26min.On the first day of April, sunrise is at 7:10 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 8:30 pm CDT.
Sunshine
In Napa Junction, the average sunshine in April is 8h.UV index
In Napa Junction, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 4 during April morphs into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How much does it rain in April?
How many days does it snow in April?
What is the average length of the day in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
How high is the UV index in April?
Average temperature in April
Napa Junction, SD
- Average high temperature in April: 57.9°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in April: 40.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in April
Napa Junction, SD
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in April
Napa Junction, SD
- Average wind speed in April: 11.1mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in April
Napa Junction, SD
- Average humidity in April: 68%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).
Average rainfall in April
Napa Junction, SD
- Average rainfall in April: 2.4"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in April
Napa Junction, SD
- Average rainfall days in April: 12.2 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in April
Napa Junction, SD
- Average snowfall in April: 2.13"
The month with the highest snowfall is December (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Napa Junction, SD
- Average snowfall days in April: 2.4 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Napa Junction, SD
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in April
Napa Junction, SD
- Average sunshine days in April: 14.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in April
Napa Junction, SD
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Napa Junction, SD
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in April
Napa Junction, 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).
Napa Junction, South Dakota, USA
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