August weather forecast
Harlan, IN

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Weather in August

The last month of the summer, August, is another warm month in Harlan, Indiana, with an average temperature varying between 79.2°F (26.2°C) and 61.3°F (16.3°C).

Temperature

August's climate shows a minor adjustment in average high-temperatures to a still warm 79.2°F (26.2°C) from July's 81.1°F (27.3°C). During August, the nighttime temperature averages of 61.3°F (16.3°C).

Humidity

In Harlan, the average relative humidity in August is 82%.

Rainfall

In August, in Harlan, Indiana, the rain falls for 13.8 days. Throughout August, 1.42" (36mm) of precipitation is accumulated. Throughout the year, there are 140.8 rainfall days, and 16.22" (412mm) of precipitation is accumulated.

Snowfall

In Harlan, snow does not fall in June through September.

Daylight

In August, the average length of the day is 13h and 46min.
On the first day of August in Harlan, Indiana, sunrise is at 6:35 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 8:13 pm EDT.

Sunshine

In Harlan, the average sunshine in August is 9.6h.

UV index

In August, the average daily maximum UV index in Harlan is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In August, the UV index of 5 transforms into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What is the usual temperature for Harlan in August?

In August, the average high-temperature and low-temperature in Harlan, Indiana, are 79.2°F (26.2°C) and 61.3°F (16.3°C) respectively. In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What is the average humidity in August in Harlan?

In Harlan, Indiana, the average relative humidity in August is 82%.

How much does it rain in Harlan in August?

In Harlan, Indiana, in August, during 13.8 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

When it does not snow in Harlan?

In Harlan, snow does not fall in June through September.

What is the average length of the day in August in Harlan?

In Harlan, Indiana, the average day length in August is 13h and 46min.

When is the sunrise / sunset in August in Harlan?

On the first day of August in Harlan, Indiana, sunrise is at 6:35 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 8:13 pm EDT.

How long on average sun shines in August in Harlan?

The average sunshine duration in August in Harlan is 9.6h.

What is the UV index reading in August in Harlan?

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to 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
Harlan, IN

Average temperature in August - Harlan, IN
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (19°F).

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Average pressure in August
Harlan, IN

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

The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Harlan, IN

Average wind speed in August - Harlan, IN
  • Average wind speed in August: 6.1mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in August
Harlan, IN

Average humidity in August - Harlan, IN
  • Average humidity in August: 82%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in August
Harlan, IN

Average rainfall in August - Harlan, IN
  • Average rainfall in August: 1.42"

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is February (0.87").

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Average rainfall days in August
Harlan, IN

Average rainfall days in August - Harlan, IN
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (6.5 days).

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Average snowfall in August
Harlan, IN

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

The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Harlan, IN

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

The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Harlan, IN
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in August
Harlan, IN

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

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is June (11.5 days).

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Average UV index in August
Harlan, IN

Average UV index in August - Harlan, IN
  • Average UV index in August: 5

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Harlan, IN

Average cloud cover in August - Harlan, IN
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in August
Harlan, IN

Average visibility in August - Harlan, IN
  • Average visibility in August: 5mi

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

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Harlan, Indiana, USA

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