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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, the same as December, is an icy winter month in South Williamson, Kentucky, with an average temperature varying between 26.8°F (-2.9°C) and 40.1°F (4.5°C). In South Williamson, the lowest temperatures are generally noted in January, averaging a high of 40.1°F (4.5°C) and a low of 26.8°F (-2.9°C). Weather in January »
Weather in February
February, the last month of the winter in South Williamson, is a frosty month, with temperature in the range of an average high of 45°F (7.2°C) and an average low of 30.2°F (-1°C). South Williamson observes a minor difference in average high-temperatures between January's 40.1°F (4.5°C) and February's 45°F (7.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in South Williamson, Kentucky, with temperature in the range of an average high of 54°F (12.2°C) and an average low of 37.2°F (2.9°C). March introduces a marginal temperature uplift, with average high-temperatures adjusting from February's chilly 45°F (7.2°C) to a fresh 54°F (12.2°C). Weather in March »
Weather in April
April is a refreshing spring month in South Williamson, Kentucky, with an average temperature fluctuating between 46°F (7.8°C) and 65.8°F (18.8°C). Noticing a change, the average high-temperature during April moves from March's cool 54°F (12.2°C) to a refreshing 65.8°F (18.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in South Williamson, Kentucky, with temperature in the range of an average high of 75.6°F (24.2°C) and an average low of 54°F (12.2°C). South Williamson experiences a temperature shift with the start of May, with average high-temperatures moving from a refreshing 65.8°F (18.8°C) in April to a warm 75.6°F (24.2°C). Weather in May »
Weather in June
June, the first month of the summer in South Williamson, is also a moderately hot month, with an average temperature fluctuating between 59.5°F (15.3°C) and 82.9°F (28.3°C). June's arrival signals a modest temperature shift, moving from a moderately hot 75.6°F (24.2°C) in May to a still warm 82.9°F (28.3°C). Weather in June »
Weather in July
July is a hot summer month in South Williamson, Kentucky, with an average temperature ranging between max 86°F (30°C) and min 63.1°F (17.3°C). July, characterized by an average high temperature of 86°F (30°C) and a low temperature of 63.1°F (17.3°C), is generally the warmest month. In July, the heat index is appraised at a torrid 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in South Williamson, Kentucky, with an average temperature varying between 84.4°F (29.1°C) and 61°F (16.1°C). The arrival of August records an average high-temperature of a warm 84.4°F (29.1°C), closely related to the 86°F (30°C) observed in July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in South Williamson, Kentucky, with an average temperature ranging between max 78.6°F (25.9°C) and min 56.8°F (13.8°C). As South Williamson enters September, the average high-temperature subtly lowers from the a warm 84.4°F (29.1°C) of August to a still moderately hot 78.6°F (25.9°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in South Williamson, Kentucky, with an average temperature fluctuating between 66.2°F (19°C) and 46.9°F (8.3°C). South Williamson's progression into October includes a drop in the average high-temperature, from a warm 78.6°F (25.9°C) in September to a comfortable 66.2°F (19°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in South Williamson, Kentucky, with an average temperature ranging between min 37.6°F (3.1°C) and max 54°F (12.2°C). The start of November comes with a reduction in the average high-temperature, receding from a refreshing 66.2°F (19°C) in October to a cool 54°F (12.2°C). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in South Williamson, Kentucky, with an average temperature fluctuating between 33.1°F (0.6°C) and 45.1°F (7.3°C). December's onset brings a negligible change in high-temperatures, falling from a fresh 54°F (12.2°C) in November to a frosty 45.1°F (7.3°C). Weather in December »
Updated: Jun 13, 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 part of the year is the coldest?
South Williamson's January weather, with an average high temperature of 40.1°F (4.5°C) and an average low temperature of 26.8°F (-2.9°C), tends to be the coldest of the year.
How much does it rain?
Throughout the year, there are 163.6 rainfall days, and 30.43" (773mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How many days does it snow?
In South Williamson, during the entire year, snow falls for 32.9 days and aggregates up to 16.81" (427mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.1h of sunshine.
When is the lowest UV index?
The months with the lowest UV index in South Williamson are January, February and December, with an average maximum UV index of 2.
What is the most humid month?
The most humid month is February, with an average relative humidity of 81%.
What is the wettest month?
The months with the most rainfall are February and May, with an average 3.27" (83mm) of precipitation.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 7.3 days and accumulates 4.09" (104mm) of snow.
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 it does not snow?
June through September are months without snowfall.
When are the longest days?
With an average of 14h and 42min of daylight, June has the longest days of the year.
What are the months with the highest UV index?
June and August, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest in South Williamson?
In South Williamson, July is the month with the highest recorded average temperatures, measuring a high of 86°F (30°C) and a low of 63.1°F (17.3°C).
What is the least humid month?
The months with the lowest humidity are July, August and November, with an average relative humidity of 75%.
What month has the most sunshine?
With an average of 10.4h of sunshine, August has the most sunshine of the year.
What is the driest month?
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.46" (37mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 36min of daylight.
Average temperature
South Williamson, KY
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (40.1°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure
South Williamson, KY
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.1"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.02"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
South Williamson, KY
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.2mph - Average wind speed in April:
6.4mph - Average wind speed in May:
5.5mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
3.9mph - Average wind speed in September:
4.2mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.8mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity
South Williamson, KY
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are July, August and November (75%).
Average rainfall
South Williamson, KY
- Average rainfall in January:
2.4" - Average rainfall in February:
3.27" - Average rainfall in March:
2.83" - Average rainfall in April:
2.83" - Average rainfall in May:
3.27" - Average rainfall in June:
2.72"
- Average rainfall in July:
2.36" - Average rainfall in August:
1.93" - Average rainfall in September:
1.46" - Average rainfall in October:
2.44" - Average rainfall in November:
2.01" - Average rainfall in December:
2.91"
The wettest months (with the highest rainfall) are February and May (3.27").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days
South Williamson, KY
- Average rainfall days in January:
10.8 days - Average rainfall days in February:
11.8 days - Average rainfall days in March:
14.9 days - Average rainfall days in April:
16.7 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
10.1 days - Average rainfall days in December:
11 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall
South Williamson, KY
- Average snowfall in January:
3.62" - Average snowfall in February:
4.09" - Average snowfall in March:
3.11" - Average snowfall in April:
0.43" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
South Williamson, KY
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.3 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:
0.9 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
6 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
South Williamson, KY
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 2min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
South Williamson, KY
- Average sunshine days in January:
12.6 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
12.5 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
10.5 days - Average sunshine days in June:
12 days
- Average sunshine days in July:
12 days - Average sunshine days in August:
15.2 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index
South Williamson, KY
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
South Williamson, KY
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
South Williamson, KY
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
South Williamson, Kentucky, USA
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