August weather forecastShelbyville, IN
August
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in August /
Average sunshine in August
Shelbyville, IN
- Average daylight in August: 13h and 42min
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 36min
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).
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).
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).
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).
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).
