April weather forecastWatertown, SD
April
Weather in April
April is a notable month of contrast in Watertown, South Dakota, marking the complete shift from winter to spring. A significant rise in both high and low temperatures with a high of 51.6°F (10.9°C) is evident. Residents and tourists enjoy longer daylight hours, up to 13.5 hours, and a decrease in snowfall, with only 1.46" (37mm) over fewer days. The incoming spring showers encourage the growth of fresh greenery, transforming the city into a lush landscape. Despite the typically unpredictable weather patterns of April, it carries the promise of awakening nature.Temperature
Watertown sees an increase in average high-temperatures during April, moving from a wintry 38.1°F (3.4°C) in March to a fresh 51.6°F (10.9°C). The month of April records an average low-temperature of 35.2°F (1.8°C).Humidity
In April, the average relative humidity in Watertown is 70%.Rainfall
In April, in Watertown, the rain falls for 11.6 days. Throughout April, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 112.3 rainfall days, and 18.78" (477mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In April, in Watertown, it is snowing for 4.8 days. Throughout April, 1.46" (37mm) of snow is accumulated. Throughout the year, in Watertown, there are 64.3 snowfall days, and 17.56" (446mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 32min.On the first day of the month, sunrise is at 7:07 am and sunset at 7:56 pm. On the last day of April, in Watertown, South Dakota, sunrise is at 6:18 am and sunset at 8:33 pm CDT.
Sunshine
In April, the average sunshine is 7.5h.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 the average person.Note: In April, the maximum UV index of 3 translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Watertown, SD
- Average high temperature in April: 51.6°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in April: 35.2°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).
Average pressure in April
Watertown, 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 (29.85"Hg).
Average wind speed in April
Watertown, SD
- Average wind speed in April: 11.6mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity in April
Watertown, SD
- Average humidity in April: 70%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).
Average rainfall in April
Watertown, SD
- Average rainfall in April: 1.46"
The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").
Average rainfall days in April
Watertown, SD
- Average rainfall days in April: 11.6 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in April
Watertown, SD
- Average snowfall in April: 1.46"
The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Watertown, SD
- Average snowfall days in April: 4.8 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Watertown, 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 30min
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 36min).
Average sunshine days in April
Watertown, SD
- Average sunshine days in April: 12.8 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in April
Watertown, 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 December (UV index 1).
Average cloud cover in April
Watertown, SD
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
Watertown, 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).
