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
The start of April signals an increase in the average high-temperature, moving from a refreshing 65.1°F (18.4°C) in March to a warm 74.1°F (23.4°C). During the month of April, the nighttime temperature falls to an average of 55.9°F (13.3°C).Humidity
The average relative humidity in April is 72%.Rainfall
In Williston, South Carolina, during April, the rain falls for 12.7 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, there are 157.7 rainfall days, and 30.2" (767mm) of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
In Williston, the average length of the day in April is 13h and 2min.On the first day of April in Williston, 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
The average sunshine in April is 9.3h.UV index
The average daily maximum UV index in April in Williston is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 during April leads to these advisories:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the average April temperature in Williston?
What is the average humidity in April in Williston?
How many days does it rain in April in Williston?
When it does not snow in Williston?
How many hours of daylight does Williston have in April?
When are sunrise and sunset in April in Williston?
How long on average sun shines in April in Williston?
What is the UV index reading in April in Williston?
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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