Climate and monthly weather forecast
Hartsville, SC

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Weather in January

January, like December, in Hartsville, South Carolina, is another fresh winter month, with an average temperature ranging between max 51.8°F (11°C) and min 36.9°F (2.7°C). In Hartsville, South Carolina, the lowest average temperatures are observed in January, with a high of 51.8°F (11°C) and a low of 36.9°F (2.7°C). Weather in January »

Weather in February

February, the last month of the winter in Hartsville, is a mild month, with an average temperature fluctuating between 56.3°F (13.5°C) and 39.7°F (4.3°C). Hartsville's weather, upon February's arrival, documents an average high-temperature of a moderate 56.3°F (13.5°C), nearly identical to the prior month. Weather in February »

Weather in March

The first month of the spring, March, is a refreshing month in Hartsville, South Carolina, with temperature in the range of an average low of 45.7°F (7.6°C) and an average high of 63°F (17.2°C). The shift into March is accompanied by a modest temperature increase, with the average high-temperature edging up from a mild 56.3°F (13.5°C) in February to an enjoyable 63°F (17.2°C). Weather in March »

Weather in April

April in Hartsville, South Carolina, is a pleasant spring month, with an average temperature fluctuating between 54.7°F (12.6°C) and 72.5°F (22.5°C). The transition to April introduces an increase in the average high-temperature, shifting from a comfortable 63°F (17.2°C) in March to a pleasant 72.5°F (22.5°C). Weather in April »

Weather in May

May, the last month of the spring in Hartsville, is a warm month, with an average temperature varying between 79.5°F (26.4°C) and 62.6°F (17°C). Entering May, Hartsville notices a subtle temperature elevation, with the average high-temperature advancing from April's agreeable 72.5°F (22.5°C) to a warm 79.5°F (26.4°C). Weather in May »

Weather in June

June, the first month of the summer in Hartsville, is a hot month, with an average temperature varying between 86.7°F (30.4°C) and 69.6°F (20.9°C). Hartsville's June weather indicates a minor ascent in high-temperatures, adjusting from a moderately hot 79.5°F (26.4°C) in May to a tropical 86.7°F (30.4°C). Weather in June »

Weather in July

July, the same as June, in Hartsville, South Carolina, is a hot summer month, with an average temperature varying between 89.6°F (32°C) and 72.5°F (22.5°C). Hartsville registers the highest average temperatures during the month of July, with peaks of 89.6°F (32°C) and lows of 72.5°F (22.5°C). The average heat index in July is estimated at a scorching 107.6°F (42°C). Weather in July »

Weather in August

August, the last month of the summer in Hartsville, is also a hot month, with temperature in the range of an average low of 71.2°F (21.8°C) and an average high of 88°F (31.1°C). A minor adjustment in Hartsville's average high-temperature is noted with the start of August, touching a still hot 88°F (31.1°C) from July's 89.6°F (32°C). Weather in August »

Weather in September

September, the first month of the autumn in Hartsville, is also a moderately hot month, with temperature in the range of an average high of 83.3°F (28.5°C) and an average low of 66.2°F (19°C). As September takes hold, the average high-temperature is a warm 83.3°F (28.5°C), nearly mirroring that of the previous month. Weather in September »

Weather in October

October, like September, is an agreeable autumn month in Hartsville, South Carolina, with an average temperature varying between 55.8°F (13.2°C) and 72.7°F (22.6°C). The arrival of October indicates a decrease in the average high-temperature, moving from a moderately hot 83.3°F (28.5°C) in September to an agreeable 72.7°F (22.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another refreshing month in Hartsville, South Carolina, with an average temperature ranging between min 45.5°F (7.5°C) and max 61.7°F (16.5°C). The arrival of November corresponds with a reduction in the average high-temperature, down from October's pleasant 72.7°F (22.6°C) to a refreshing 61.7°F (16.5°C). Weather in November »

Weather in December

December, the first month of the winter in Hartsville, is still a refreshing month, with an average temperature varying between 41°F (5°C) and 55.6°F (13.1°C). As December commences, the average high-temperature subtly reduces, transitioning from a comfortable 61.7°F (16.5°C) in November to a moderate 55.6°F (13.1°C). Weather in December »
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

The lowest temperatures are recorded in January, with averages reaching a high of 51.8°F (11°C) and a low of 36.9°F (2.7°C).

What is the least humid month?

January and November, with an average relative humidity of 71%, are the least humid months.

What is the driest month?

January is the month with the least rainfall. Rain falls for 10.8 days and accumulates 1.81" (46mm) of precipitation.

How much does it rain?

In Hartsville, South Carolina, during the entire year, the rain falls for 154 days and collects up to 30.51" (775mm) of precipitation.

When does it snow?

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

How many days does it snow?

In Hartsville, during the entire year, snow falls for 1.4 days and aggregates up to 1.57" (40mm) of snow.

What is the month with the least sunshine in Hartsville?

January and December, with an average of 5.5h of sunshine, are months with the least sunshine.

When is the lowest UV index?

January is the month with the lowest UV index, with an average maximum UV index of 2.

What is the snowiest month?

February is the month with the most snowfall. Snow falls for 0.7 days and accumulates 0.94" (24mm) 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?

In Hartsville, snow does not fall in April through October.

What is the most humid month?

The months with the highest humidity are May and September, with an average relative humidity of 76%.

What is the rainiest month?

May is the month with the most rainfall in Hartsville. Rain falls for 15.7 days and accumulates 3.19" (81mm) of precipitation.

When are the longest days?

The month with the longest days is June, with an average of 14h and 24min of daylight.

What are the months with the highest UV index?

The months with the highest UV index are June and July, with an average maximum UV index of 7.

What is the warmest month?

In Hartsville, July is the warmest month, with temperatures averaging a high of 89.6°F (32°C) and a low of 72.5°F (22.5°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 month with the shortest days?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

Average temperature
Hartsville, SC

Average temperature - Hartsville, SC

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (51.8°F).

The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

Average pressure
Hartsville, SC

Average pressure - Hartsville, SC

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
Hartsville, SC

Average wind speed - Hartsville, SC

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity
Hartsville, SC

Average humidity - Hartsville, SC

The months with the highest relative humidity are May and September (76%).
The months with the lowest relative humidity are January and November (71%).

Average rainfall
Hartsville, SC

Average rainfall - Hartsville, SC

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (1.81").

Average rainfall days
Hartsville, SC

Average rainfall days - Hartsville, SC

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is October (7.8 days).

Average snowfall
Hartsville, SC

Average snowfall - Hartsville, SC

The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Hartsville, SC

Average snowfall days - Hartsville, SC

The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Hartsville, SC

Average daylight / Average sunshine - Hartsville, SC

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).

Average sunshine days
Hartsville, SC

Average sunshine days - Hartsville, SC

The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (11 days).

Average cloud cover
Hartsville, SC

Average cloud cover - Hartsville, SC

The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 29).

Average visibility
Hartsville, SC

Average visibility - Hartsville, 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).

Hartsville, South Carolina, USA

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