August weather forecast
Yellowstone, IN

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Weather in August

The last month of the summer, August, is another warm month in Yellowstone, Indiana, with an average temperature varying between 64°F (17.8°C) and 84.2°F (29°C).

Temperature

August's advent denotes a minor fluctuation in the average high-temperature to a still moderately hot 84.2°F (29°C) from July's 85.1°F (29.5°C). The mean low-temperature during August nights is a refreshing 64°F (17.8°C).

Heat index

Throughout August, the heat index is evaluated at a hot 93.2°F (34°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In Yellowstone, in August, it is raining for 12.2 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 135.6 rainfall days, and 17.64" (448mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 38min.
On the first day of August in Yellowstone, sunrise is at 6:46 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 8:16 pm EDT.

Sunshine

In Yellowstone, the average sunshine in August is 9.4h.

UV index

The months with the highest UV index in Yellowstone are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

How hot is it in August?

In Yellowstone, 84.2°F (29°C) is the average high-temperature and 64°F (17.8°C) is the average low-temperature during August. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 93.2°F (34°C).

What is the average humidity in August?

The average relative humidity in August is 77%.

How many days does it rain in August?

In Yellowstone, in August, it is raining for 12.2 days, with typically 1.46" (37mm) of accumulated precipitation.

When it does not snow?

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

How many hours of daylight does Yellowstone have in August?

In Yellowstone, the average day length in August is 13h and 38min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:46 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 8:16 pm EDT.

How many hours of sunshine does Yellowstone have in August?

The average sunshine duration in August is 9.4h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Yellowstone, IN

Average temperature in August - Yellowstone, IN
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in August
Yellowstone, IN

Average pressure in August - Yellowstone, IN
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Yellowstone, IN

Average wind speed in August - Yellowstone, IN
  • Average wind speed in August: 4.9mph

The windiest months (with the highest average wind speed) are January, February and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).

Average humidity in August
Yellowstone, IN

Average humidity in August - Yellowstone, IN
  • Average humidity in August: 77%

The months with the highest relative humidity are February, May and December (81%).
The month with the lowest relative humidity is October (75%).

Average rainfall in August
Yellowstone, IN

Average rainfall in August - Yellowstone, IN
  • Average rainfall in August: 1.46"

The wettest month (with the highest rainfall) is July (2.17").
The driest month (with the least rainfall) is September (0.91").

Average rainfall days in August
Yellowstone, IN

Average rainfall days in August - Yellowstone, IN
  • Average rainfall days in August: 12.2 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in August
Yellowstone, IN

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

The month with the highest snowfall is March (1.22").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Yellowstone, IN

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

The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Yellowstone, 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

Average sunshine days in August
Yellowstone, IN

Average sunshine days in August - Yellowstone, IN
  • Average sunshine days in August: 15.8 days

The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.1 days).

Average UV index in August
Yellowstone, IN

Average UV index in August - Yellowstone, 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, November and December (UV index 2).

Average cloud cover in August
Yellowstone, IN

Average cloud cover in August - Yellowstone, IN
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in August
Yellowstone, IN

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

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

Yellowstone, Indiana, USA

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