August weather forecastFlat Rock, IN
August
Weather in August
August, the last month of the summer in Flat Rock, is another warm month, with an average temperature ranging between max 82.8°F (28.2°C) and min 63.3°F (17.4°C).Temperature
The shift to August signals an average high-temperature of a still warm 82.8°F (28.2°C), subtly varied from July's 83.3°F (28.5°C). Flat Rock reports a consistent average low-temperature of 63.3°F (17.4°C) throughout August nights.Heat index
The heat index value during August is estimated at a hot 89.6°F (32°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In Flat Rock, the average relative humidity in August is 79%.Rainfall
In August, in Flat Rock, the rain falls for 14.6 days. Throughout August, 2.05" (52mm) of precipitation is accumulated. In Flat Rock, Indiana, during the entire year, the rain falls for 163.5 days and collects up to 29.29" (744mm) of precipitation.Snowfall
May through October are months without snowfall in Flat Rock.Daylight
The average length of the day in August is 13h and 40min.On the first day of August in Flat Rock, sunrise is at 6:43 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 8:15 pm EDT.
Sunshine
In Flat Rock, the average sunshine in August is 9.6h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Flat Rock. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In August, the UV index of 6 transforms into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Flat Rock, IN
- Average high temperature in August: 82.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in August: 63.3°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in August
Flat Rock, 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
Flat Rock, IN
- Average wind speed in August: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in August
Flat Rock, IN
- Average humidity in August: 79%
The months with the highest relative humidity are January, February, July and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Flat Rock, IN
- Average rainfall in August: 2.05"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in August
Flat Rock, IN
- Average rainfall days in August: 14.6 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (9.4 days).
Average snowfall in August
Flat Rock, IN
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Flat Rock, IN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.6 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
Flat Rock, 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 month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Flat Rock, IN
- Average sunshine days in August: 13.6 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in August
Flat Rock, 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
Flat Rock, IN
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in August
Flat Rock, IN
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are July and December (5mi).





