August weather forecast
Shelbyville, IN

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Weather in August

The last month of the summer, August, is another warm month in Shelbyville, Indiana, with an average temperature fluctuating between 80.6°F (27°C) and 63.1°F (17.3°C).

Temperature

Shelbyville in August witnesses an average high-temperature of a still moderately hot 80.6°F (27°C), indicating a slight variation from July's 81.7°F (27.6°C). Throughout August, Shelbyville encounters an average temperature drop to a comfortable 63.1°F (17.3°C).

Heat index

For most parts of August, the heat index is calculated to be a hot 86°F (30°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

In August, the average relative humidity is 81%.

Rainfall

In August, the rain falls for 13.9 days. Throughout August, 2.13" (54mm) of precipitation is accumulated. Throughout the year, there are 153.4 rainfall days, and 26.81" (681mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August in Shelbyville is 13h and 40min.
On the first day of the month, sunrise is at 6:43 am and sunset at 8:55 pm. On the last day of August, in Shelbyville, sunrise is at 7:11 am and sunset at 8:15 pm EDT.

Sunshine

The average sunshine in August is 9.6h.

UV index

In Shelbyville, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 5 in August leads to these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

What is the temperature in August in Shelbyville?

In Shelbyville, 80.6°F (27°C) is the average high-temperature and 63.1°F (17.3°C) is the average low-temperature during August. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in August is calculated to be 86°F (30°C).

What is the average humidity in August in Shelbyville?

In Shelbyville, the average relative humidity in August is 81%.

How much does it rain in Shelbyville in August?

In Shelbyville, in August, it is raining for 13.9 days, with typically 2.13" (54mm) of accumulated precipitation.

When it does not snow in Shelbyville?

May through October are months without snowfall.

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

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

What time are sunrise and sunset in August in Shelbyville?

In August, on the first day of the month, sunrise is at 6:43 am and sunset at 8:55 pm. On the last day of the month, in Shelbyville, sunrise is at 7:11 am and sunset at 8:15 pm EDT.

How long on average sun shines in August in Shelbyville?

In August, the average sunshine duration in Shelbyville, Indiana, is 9.6h.

How high is the UV index in August in Shelbyville?

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
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
Shelbyville, IN

Average temperature in August - Shelbyville, IN
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in August
Shelbyville, IN

Average pressure in August - Shelbyville, 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).

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Average wind speed in August
Shelbyville, IN

Average wind speed in August - Shelbyville, IN
  • Average wind speed in August: 5.7mph

The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in August
Shelbyville, IN

Average humidity in August - Shelbyville, IN
  • Average humidity in August: 81%

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

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Average rainfall in August
Shelbyville, IN

Average rainfall in August - Shelbyville, IN
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.69").

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Average rainfall days in August
Shelbyville, IN

Average rainfall days in August - Shelbyville, IN
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8 days).

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Average snowfall in August
Shelbyville, IN

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

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Shelbyville, IN

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

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Shelbyville, 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 24min).

  • Average sunshine in August: 9h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in August
Shelbyville, IN

Average sunshine days in August - Shelbyville, IN
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (9.8 days).

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Average UV index in August
Shelbyville, IN

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

The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Shelbyville, IN

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

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in August
Shelbyville, IN

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

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).

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Shelbyville, Indiana, USA

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