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
Williston sees an increase in average high-temperatures during April, moving from an enjoyable 65.1°F (18.4°C) in March to a warm 74.1°F (23.4°C). In April, Williston experiences a temperature dip to an average of 55.9°F (13.3°C) at night.Humidity
In April, the average relative humidity is 72%.Rainfall
In Williston, in April, during 12.7 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. In Williston, South Carolina, during the entire year, the rain falls for 157.7 days and collects up to 30.2" (767mm) of precipitation.Snowfall
In Williston, South Carolina, snow does not fall in March through November.Daylight
The average length of the day in April is 13h and 2min.On the first day of April, sunrise is at 7:12 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 8:08 pm EDT.
Sunshine
In April, the average sunshine in Williston is 9.3h.UV index
In Williston, the average daily maximum UV index in April is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 6 in April, converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Williston in April?
What is the average humidity in April?
How much does it rain in April?
When it does not snow?
How many hours of daylight does Williston have in April?
When are sunrise and sunset in April?
How long on average sun shines in April in Williston?
What is the UV index intensity in April?
Average temperature in April
Williston, SC
- Average high temperature in April: 74.1°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in April: 55.9°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in April
Williston, SC
- Average pressure in April: 30.02"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in April
Williston, SC
- Average wind speed in April: 8.6mph
The windiest months (with the highest average wind speed) are February, March and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in April
Williston, SC
- Average humidity in April: 72%
The month with the highest relative humidity is December (75%).
The months with the lowest relative humidity are January and November (70%).
Average rainfall in April
Williston, SC
- Average rainfall in April: 3.07"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in April
Williston, SC
- Average rainfall days in April: 12.7 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in April
Williston, SC
- Average snowfall in April: 0"
The month with the highest snowfall is January (0.31").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in April
Williston, SC
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in April /
Average sunshine in April
Williston, SC
- Average daylight in April: 13h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in April: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in April
Williston, SC
- Average sunshine days in April: 16.1 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in April
Williston, SC
- Average UV index in April: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in April
Williston, SC
- Average cloud cover in April: 32
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in April
Williston, SC
- 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).
Williston, South Carolina, USA
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