August weather forecast
Hartsville, IN

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Weather in August

The last month of the summer, August, is also a moderately hot month in Hartsville, Indiana, with an average temperature varying between 63.1°F (17.3°C) and 81.3°F (27.4°C).

Temperature

As Hartsville transitions from July to August, the average high-temperatures adjust to a still warm 81.3°F (27.4°C), nearly the same as the previous 82.4°F (28°C). August's nights observe an average temperature of 63.1°F (17.3°C).

Heat index

August's average heat index is estimated at a hot 87.8°F (31°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

The average relative humidity in August in Hartsville is 80%.

Rainfall

In Hartsville, Indiana, in August, during 14.5 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Hartsville, during the entire year, the rain falls for 169.5 days and collects up to 35.87" (911mm) of precipitation.

Snowfall

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

Daylight

In Hartsville, Indiana, the average length of the day in August is 13h and 40min.
On the first day of the month, sunrise is at 6:43 am and sunset at 8:54 pm. On the last day of August, sunrise is at 7:11 am and sunset at 8:14 pm EDT.

Sunshine

In August, the average sunshine is 9.6h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In August, an average UV index of 6 transforms into the following instructions:
Fend off overexposure. Sun protection is vital. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

What are August temperatures?

The high-temperature, in August, in Hartsville, is 81.3°F (27.4°C), while the low-temperature averages to 63.1°F (17.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is estimated at 87.8°F (31°C).

What is the average humidity in August?

In Hartsville, the average relative humidity in August is 80%.

How many days does it rain in August?

In Hartsville, in August, it is raining for 14.5 days, with typically 2.52" (64mm) of accumulated precipitation.

When it does not snow?

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

What is the average length of the day in August?

The average day length in August is 13h and 40min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:43 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 8:14 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.6h.

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

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

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Hartsville, IN

Average temperature in August - Hartsville, IN
  • Average high temperature in August: 81.3°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in August
Hartsville, IN

Average pressure in August - Hartsville, IN
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Hartsville, IN

Average wind speed in August - Hartsville, IN
  • Average wind speed in August: 5.5mph

The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in August
Hartsville, IN

Average humidity in August - Hartsville, IN
  • Average humidity in August: 80%

The months with the highest relative humidity are July and December (82%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August
Hartsville, IN

Average rainfall in August - Hartsville, IN
  • Average rainfall in August: 2.52"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in August
Hartsville, IN

Average rainfall days in August - Hartsville, IN
  • Average rainfall days in August: 14.5 days

The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is January (9.8 days).

Average snowfall in August
Hartsville, IN

Average snowfall in August - Hartsville, IN
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Hartsville, IN

Average snowfall days in August - Hartsville, IN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Hartsville, IN

Average daylight in August / Average sunshine in August - Hartsville, IN
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in August
Hartsville, IN

Average sunshine days in August - Hartsville, IN
  • Average sunshine days in August: 13 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is May (9.3 days).

Average UV index in August
Hartsville, IN

Average UV index in August - Hartsville, IN
  • Average UV index in August: 6

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, October, November and December (UV index 2).

Average cloud cover in August
Hartsville, IN

Average cloud cover in August - Hartsville, IN
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August
Hartsville, IN

Average visibility in August - Hartsville, IN
  • Average visibility in August: 6mi

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

Hartsville, Indiana, USA

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