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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Williston, South Carolina, is a cool winter month, with temperature in the range of an average high of 54°F (12.2°C) and an average low of 38.8°F (3.8°C). Temperature readings reach their annual highs in January, averaging 54°F (12.2°C) and a minimum average of 38.8°F (3.8°C). Weather in January »
Weather in February
February, the last month of the winter in Williston, is a mild month, with an average temperature ranging between min 42.1°F (5.6°C) and max 58.6°F (14.8°C). A minor adjustment in Williston's average high-temperature is noted with the start of February, touching a refreshing 58.6°F (14.8°C) from January's 54°F (12.2°C). Weather in February »
Weather in March
The first month of the spring, March, is an enjoyable month in Williston, South Carolina, with temperature in the range of an average high of 65.1°F (18.4°C) and an average low of 47.8°F (8.8°C). March brings a slight rise in Williston's average high-temperature, moving from a moderate 58.6°F (14.8°C) in February to a still refreshing 65.1°F (18.4°C). Weather in March »
Weather in April
April in Williston, South Carolina, is a moderately hot spring month, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 55.9°F (13.3°C). 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). Weather in April »
Weather in May
The last month of the spring, May, is another warm month in Williston, South Carolina, with an average temperature ranging between max 81°F (27.2°C) and min 63.5°F (17.5°C). May brings a slight rise in Williston's average high-temperature, moving from a warm 74.1°F (23.4°C) in April to a still moderately hot 81°F (27.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a tropical month in Williston, South Carolina, with an average temperature varying between 87.6°F (30.9°C) and 71.1°F (21.7°C). June witnesses a minor rise in the average high-temperature, transitioning from a moderately hot 81°F (27.2°C) in May to a tropical 87.6°F (30.9°C). Weather in June »
Weather in July
July, like June, is another tropical summer month in Williston, South Carolina, with an average temperature fluctuating between 73.4°F (23°C) and 90.5°F (32.5°C). July tends to be the warmest month, with temperatures averaging a daily high of 90.5°F (32.5°C) and a low of 73.4°F (23°C). In July, the heat index is calculated to be an extremely hot 109.4°F (43°C). Weather in July »
Weather in August
August, the last month of the summer in Williston, is also a hot month, with an average temperature ranging between max 88.9°F (31.6°C) and min 72.5°F (22.5°C). August brings an average high-temperature of a still hot 88.9°F (31.6°C), showing a slight difference from July's 90.5°F (32.5°C). Weather in August »
Weather in September
September, the first month of the autumn in Williston, is also a moderately hot month, with an average temperature varying between 84°F (28.9°C) and 67.6°F (19.8°C). The arrival of September brings an average high-temperature of a warm 84°F (28.9°C), nearly identical to August's 88.9°F (31.6°C). Weather in September »
Weather in October
October, like September, in Williston, South Carolina, is a moderately hot autumn month, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.8°F (23.2°C). Williston in October demonstrates a small temperature transition, adjusting from an average high of a moderately hot 84°F (28.9°C) in September to a still warm 73.8°F (23.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Williston, is another refreshing month, with an average temperature ranging between max 63.3°F (17.4°C) and min 47.3°F (8.5°C). During the transition into November, Williston observes a decrease in the average high-temperature, falling from a moderately hot 73.8°F (23.2°C) in October to a refreshing 63.3°F (17.4°C). Weather in November »
Weather in December
The first month of the winter, December, is also a moderate month in Williston, South Carolina, with an average temperature varying between 57.2°F (14°C) and 43.2°F (6.2°C). The move into December indicates a slight reduction in the average high-temperature, down from November's comfortable 63.3°F (17.4°C) to a moderate 57.2°F (14°C). Weather in December »
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
January is the coldest month, with an average high-temperature of 54°F (12.2°C) and an average low-temperature of 38.8°F (3.8°C).
What is the least humid month?
January and November, with an average relative humidity of 70%, are the least humid months.
How many days does it rain?
Throughout the year, there are 157.7 rainfall days, and 30.2" (767mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January, February and December.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 0.6 days and typically aggregates up to 0.31" (8mm) of snow.
How much does it snow?
In Williston, during the entire year, snow falls for 1.2 days and aggregates up to 0.67" (17mm) of snow.
What are the months with the lowest UV index?
January and December, with an average maximum UV index of 3, are months with the lowest UV index.
When it does not snow?
March through November are months without snowfall.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When are the longest days?
June has the longest days of the year, with an average of 14h and 18min of daylight.
What is the month with the highest UV index?
June and July, with an average maximum UV index of 7, are months with the highest UV index.
What month is the hottest?
In Williston, July records the average highest temperatures, peaking at 90.5°F (32.5°C) and reaching a low of 73.4°F (23°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.9h of sunshine.
What is the driest month?
November is the month with the least rainfall in Williston. Rain falls for 8.2 days and accumulates 1.77" (45mm) of precipitation.
What is the most humid month in Williston?
December is the most humid month, with an average relative humidity of 75%.
What is the rainiest month?
December is the month with the most rainfall. Rain falls for 11.1 days and accumulates 3.35" (85mm) of precipitation.
What is the month with the shortest days?
With an average of 10h and 0min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 5.4h of sunshine.
Average temperature
Williston, SC
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).
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
Williston, SC
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"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
Williston, SC
- Average wind speed in January:
8.2mph - Average wind speed in February:
8.6mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.6mph - Average wind speed in May:
7.4mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.4mph - Average wind speed in October:
7.2mph - Average wind speed in November:
7.4mph - Average wind speed in December:
7.6mph
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
Williston, SC
The month with the highest relative humidity is December (75%).
The months with the lowest relative humidity are January and November (70%).
Average rainfall
Williston, SC
- Average rainfall in January:
1.93" - Average rainfall in February:
2.64" - Average rainfall in March:
2.4" - Average rainfall in April:
3.07" - Average rainfall in May:
2.83" - Average rainfall in June:
2.36"
- Average rainfall in July:
2.87" - Average rainfall in August:
2.91" - Average rainfall in September:
1.85" - Average rainfall in October:
2.2" - Average rainfall in November:
1.77" - Average rainfall in December:
3.35"
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
Williston, SC
- Average rainfall days in January:
10.8 days - Average rainfall days in February:
11.6 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
12.7 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
16.4 days
- Average rainfall days in July:
19 days - Average rainfall days in August:
17.8 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
11.1 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
Williston, SC
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
Williston, SC
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
0.3 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.2 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 / Average sunshine
Williston, SC
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
10h 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 January:
5h and 4min - Average sunshine in February:
6h and 5min - Average sunshine in March:
7h and 3min - Average sunshine in April:
9h and 2min - Average sunshine in May:
9h and 5min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 3min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h 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
Williston, SC
- Average sunshine days in January:
19 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.2 days - Average sunshine days in April:
16.1 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
9.4 days - Average sunshine days in August:
10.7 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
20.5 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
18.1 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
Williston, SC
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
Williston, SC
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
Williston, SC
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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