Climate and monthly weather forecast
Simpsonville, KY

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Weather in January

January, like December, in Simpsonville, Kentucky, is a wintry winter month, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 38.8°F (3.8°C). January is the month when Simpsonville experiences its coldest temperatures, averaging a high of 38.8°F (3.8°C) and a low of 26.1°F (-3.3°C). Weather in January »

Weather in February

The last month of the winter, February, is a chilly month in Simpsonville, Kentucky, with an average temperature fluctuating between 43.9°F (6.6°C) and 28.9°F (-1.7°C). February brings a marginal elevation to a frosty 43.9°F (6.6°C) from January's 38.8°F (3.8°C) in Simpsonville's average high-temperatures. Weather in February »

Weather in March

March, the first month of the spring in Simpsonville, is a fresh month, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 37.2°F (2.9°C). The start of March brings a rise in the average high-temperature, moving from a frosty 43.9°F (6.6°C) in February to a cool 53.8°F (12.1°C). Weather in March »

Weather in April

April in Simpsonville, Kentucky, is a comfortable spring month, with an average temperature varying between 46.9°F (8.3°C) and 66°F (18.9°C). April brings a rise in the average high-temperature, transitioning from March's fresh 53.8°F (12.1°C) to a comfortable 66°F (18.9°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Simpsonville, Kentucky, with an average temperature ranging between max 75.4°F (24.1°C) and min 56.3°F (13.5°C). May brings a rise in the average high-temperature, transitioning from April's enjoyable 66°F (18.9°C) to a moderately hot 75.4°F (24.1°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Simpsonville, Kentucky, with an average temperature fluctuating between 63.5°F (17.5°C) and 83.3°F (28.5°C). The start of June is characterized by a subtle increase in the average high-temperature, transitioning from a warm 75.4°F (24.1°C) in May to a still moderately hot 83.3°F (28.5°C). Weather in June »

Weather in July

July is a hot summer month in Simpsonville, Kentucky, with an average temperature varying between 66.7°F (19.3°C) and 86.4°F (30.2°C). The warmest temperatures occur during July, when averages reach a peak of 86.4°F (30.2°C) and a low of 66.7°F (19.3°C). For most parts of July, the heat index is computed to be a fiery hot 98.6°F (37°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Simpsonville, Kentucky, with an average temperature varying between 65.3°F (18.5°C) and 85.3°F (29.6°C). The advent of August sees the average high-temperature at a warm 85.3°F (29.6°C), subtly shifted from July's 86.4°F (30.2°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Simpsonville, Kentucky, with an average temperature ranging between min 59.7°F (15.4°C) and max 79.2°F (26.2°C). The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 85.3°F (29.6°C) in August to a still moderately hot 79.2°F (26.2°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Simpsonville, Kentucky, with an average temperature varying between 66.7°F (19.3°C) and 48°F (8.9°C). The transition into October involves a decrease in the average high-temperature, falling from a moderately hot 79.2°F (26.2°C) in September to an enjoyable 66.7°F (19.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Simpsonville, Kentucky, with an average temperature fluctuating between 53.2°F (11.8°C) and 37.4°F (3°C). The average high-temperature drops in November, from October's comfortable 66.7°F (19.3°C) to a fresh 53.2°F (11.8°C). Weather in November »

Weather in December

December, the first month of the winter in Simpsonville, is also a frosty month, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 31.8°F (-0.1°C). Simpsonville in December experiences a subtle temperature decline, with average high-temperatures reducing from a cool 53.2°F (11.8°C) in November to a frosty 44.1°F (6.7°C). Weather in December »
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Simpsonville's temperature records reveal January as the coldest month, marked by average highs of 38.8°F (3.8°C) and lows of 26.1°F (-3.3°C).

How many days does it rain?

In Simpsonville, during the entire year, the rain falls for 152.3 days and collects up to 25.75" (654mm) of precipitation.

When does it snow?

January through April, November and December are months with snowfall.

How much does it snow?

In Simpsonville, during the entire year, snow falls for 27.1 days and aggregates up to 5.98" (152mm) of snow.

What is the month with the least sunshine in Simpsonville?

With an average of 4.3h of sunshine, January has the least sunshine of the year in Simpsonville.

When is the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What are the most humid months?

February and December, with an average relative humidity of 80%, are most humid months.

When does it snow the most?

March is the month with the most snowfall in Simpsonville. Snow falls for 3.9 days and accumulates 1.61" (41mm) 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.

What is the rainiest month?

April is the month with the most rainfall. Rain falls for 15.7 days and accumulates 2.8" (71mm) of precipitation.

When it does not snow?

May through October are months without snowfall in Simpsonville.

When are the longest days?

With an average of 14h and 48min of daylight, June has the longest days of the year.

What month has the most sunshine?

June has the most sunshine of the year, with an average of 10.3h of sunshine.

What is the month with the highest UV index in Simpsonville?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What month is the hottest?

July, with its high-temperature average of 86.4°F (30.2°C) and a low-temperature average of 66.7°F (19.3°C), is the warmest month.

What is the least humid month?

August through October, with an average relative humidity of 74%, are the least humid months.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.7 days and accumulates 1.42" (36mm) of precipitation.

What is the month with the shortest days?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

Average temperature
Simpsonville, KY

Average temperature - Simpsonville, KY

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.8°F).

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure
Simpsonville, KY

Average pressure - Simpsonville, KY

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed
Simpsonville, KY

Average wind speed - Simpsonville, KY

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).

Average humidity
Simpsonville, KY

Average humidity - Simpsonville, KY

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August, September and October (74%).

Average rainfall
Simpsonville, KY

Average rainfall - Simpsonville, KY

The wettest month (with the highest rainfall) is April (2.8").
The driest month (with the least rainfall) is September (1.42").

Average rainfall days
Simpsonville, KY

Average rainfall days - Simpsonville, KY

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.9 days).

Average snowfall
Simpsonville, KY

Average snowfall - Simpsonville, KY

The month with the highest snowfall is March (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Simpsonville, KY

Average snowfall days - Simpsonville, KY

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Simpsonville, KY

Average daylight / Average sunshine - Simpsonville, KY

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days
Simpsonville, KY

Average sunshine days - Simpsonville, KY

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is May (11.3 days).

Average UV index
Simpsonville, KY

Average UV index - Simpsonville, KY

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Simpsonville, KY

Average visibility - Simpsonville, KY

The months with the highest visibility are March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and May (5mi).

Simpsonville, Kentucky, USA

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