Climate and monthly weather forecast
Hartsville, PA

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Weather in January

January, the same as December, is another cold winter month in Hartsville, Pennsylvania, with an average temperature varying between 24.3°F (-4.3°C) and 36.9°F (2.7°C). Hartsville's January weather reaches an average high of 36.9°F (2.7°C) and an average low of 24.3°F (-4.3°C), making it the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Hartsville, is also a wintry month, with an average temperature ranging between min 26.4°F (-3.1°C) and max 40.1°F (4.5°C). February's average high-temperature is a still icy 40.1°F (4.5°C), maintaining a close comparison with January's 36.9°F (2.7°C). Weather in February »

Weather in March

March, the first month of the spring in Hartsville, is a chilly month, with an average temperature fluctuating between 48.4°F (9.1°C) and 33.4°F (0.8°C). With the onset of March, Hartsville experiences a subtle temperature shift, with the average high-temperature moving from an icy 40.1°F (4.5°C) in February to a frosty 48.4°F (9.1°C). Weather in March »

Weather in April

April in Hartsville, Pennsylvania, is a refreshing spring month, with an average temperature fluctuating between 43.9°F (6.6°C) and 60.6°F (15.9°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a frosty 48.4°F (9.1°C) to a mild 60.6°F (15.9°C). Weather in April »

Weather in May

May, the last month of the spring in Hartsville, is a pleasant month, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 71.2°F (21.8°C). May's arrival sees a rise in the average high-temperature, jumping from April's moderate 60.6°F (15.9°C) to an agreeable 71.2°F (21.8°C). Weather in May »

Weather in June

June, the first month of the summer in Hartsville, is a warm month, with an average temperature fluctuating between 61.5°F (16.4°C) and 79.9°F (26.6°C). The coming of June brings a minor shift in Hartsville's weather, with average high-temperatures adjusting from May's pleasant 71.2°F (21.8°C) to a warm 79.9°F (26.6°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Hartsville, Pennsylvania, with temperature in the range of an average low of 67.5°F (19.7°C) and an average high of 85.6°F (29.8°C). The warmest temperatures occur during July, when averages reach a peak of 85.6°F (29.8°C) and a low of 67.5°F (19.7°C). In July, the average heat index is evaluated at a very hot 95°F (35°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Hartsville, Pennsylvania, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 83.3°F (28.5°C). Hartsville marks the onset of August with an average high-temperature of a still warm 83.3°F (28.5°C), a subtle shift from July's 85.6°F (29.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Hartsville, Pennsylvania, with an average temperature fluctuating between 59.2°F (15.1°C) and 76.1°F (24.5°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from a warm 83.3°F (28.5°C) in August to a still moderately hot 76.1°F (24.5°C). Weather in September »

Weather in October

October, like September, in Hartsville, Pennsylvania, is another enjoyable autumn month, with an average temperature ranging between min 48.9°F (9.4°C) and max 63.9°F (17.7°C). The arrival of October corresponds with a reduction in the average high-temperature, down from September's warm 76.1°F (24.5°C) to a comfortable 63.9°F (17.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Hartsville, Pennsylvania, with an average temperature ranging between max 51.8°F (11°C) and min 37.9°F (3.3°C). Welcoming November, Hartsville observes a shift in the average high-temperature, falling from October's enjoyable 63.9°F (17.7°C) to a cool 51.8°F (11°C). Weather in November »

Weather in December

December, the first month of the winter in Hartsville, is still a chilly month, with an average temperature ranging between max 42.8°F (6°C) and min 31.1°F (-0.5°C). December is characterized by a reduction in the average high-temperature, from a fresh 51.8°F (11°C) in November to a chilly 42.8°F (6°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Hartsville?

January, characterized by an average high temperature of 36.9°F (2.7°C) and a low temperature of 24.3°F (-4.3°C), is generally the coldest month in Hartsville.

How many days does it rain in Hartsville?

In Hartsville, Pennsylvania, during the entire year, the rain falls for 83.7 days and collects up to 6.22" (158mm) of precipitation.

When does it snow in Hartsville?

January through May, November and December are months with snowfall in Hartsville, Pennsylvania.

How many days does it snow in Hartsville?

In Hartsville, during the entire year, snow falls for 12.6 days and aggregates up to 1.73" (44mm) of snow.

When is the lowest UV index in Hartsville?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hartsville, Pennsylvania.

What are the most humid months in Hartsville?

February, October and December, with an average relative humidity of 78%, are most humid months in Hartsville.

When does it snow the most in Hartsville?

February is the month with the most snowfall in Hartsville, Pennsylvania. Snow falls for 3.7 days and accumulates 0.43" (11mm) of snow.

What is the month with the least sunshine in Hartsville?

The month with the least sunshine is February, with an average of 4.8h of sunshine.

When is Daylight Saving Time (DST) in Hartsville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Hartsville, 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 are the least humid months in Hartsville?

The months with the lowest humidity in Hartsville are April, July and August, with an average relative humidity of 72%.

What are the months with the highest UV index in Hartsville?

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

When it does not snow in Hartsville?

In Hartsville, Pennsylvania, snow does not fall in June through October.

When are the longest days in Hartsville?

The month with the longest days in Hartsville is June, with an average of 15h and 0min of daylight.

What part of the year is the hottest in Hartsville?

In Hartsville, July is known for its average highest temperatures, reaching a high of 85.6°F (29.8°C) and a low of 67.5°F (19.7°C).

What month has the most sunshine in Hartsville?

The month with the most sunshine is July, with an average of 10.7h of sunshine.

What is the driest month in Hartsville?

The month with the least rainfall is September, when the rain falls for 6.7 days and typically collects 0.2" (5mm) of precipitation.

What is the rainiest month in Hartsville?

December is the month with the most rainfall in Hartsville, Pennsylvania. Rain falls for 5.8 days and accumulates 0.75" (19mm) of precipitation.

What is the month with the shortest days in Hartsville?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

Average temperature
Hartsville, PA

Average temperature - Hartsville, PA

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.9°F).

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure
Hartsville, PA

Average pressure - Hartsville, PA

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
Hartsville, PA

Average wind speed - Hartsville, PA

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity
Hartsville, PA

Average humidity - Hartsville, PA

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).

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Average rainfall
Hartsville, PA

Average rainfall - Hartsville, PA

The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.2").

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Average rainfall days
Hartsville, PA

Average rainfall days - Hartsville, PA

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall
Hartsville, PA

Average snowfall - Hartsville, PA

The month with the highest snowfall is February (0.43").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Hartsville, PA

Average snowfall days - Hartsville, PA

The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Hartsville, PA

Average daylight / Average sunshine - Hartsville, PA

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days
Hartsville, PA

Average sunshine days - Hartsville, PA

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (17.4 days).

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Average UV index
Hartsville, PA

Average UV index - Hartsville, PA

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

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Average visibility
Hartsville, PA

Average visibility - Hartsville, PA

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

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Hartsville, Pennsylvania, USA

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