August weather forecastSullivan, IN
August
Weather in August
The last month of the summer, August, is another warm month in Sullivan, Indiana, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 82.6°F (28.1°C).Temperature
With the advent of August, Sullivan experiences an average high-temperature of a still warm 82.6°F (28.1°C), mirroring a close resemblance to the previous month. Throughout August, Sullivan anticipates an average low-temperature of 64.8°F (18.2°C).Heat index
The average heat index in August is calculated to be a hot 89.6°F (32°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Always consider that heat index estimations are for light winds and places in the shade. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
The average relative humidity in August is 80%.Rainfall
In Sullivan, in August, during 13.6 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Sullivan, Indiana, during the entire year, the rain falls for 150.1 days and collects up to 28.5" (724mm) of precipitation.Snowfall
In Sullivan, snow does not fall in May through October.Daylight
In August, the average length of the day is 13h and 39min.On the first day of August, sunrise is at 6:50 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 8:21 pm EDT.
Sunshine
The average sunshine in August is 9.2h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 6 in August suggests the following recommendations:
Deflect overexposure. Sun protection is a necessity. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sullivan, IN
- Average high temperature in August: 82.6°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in August: 64.8°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in August
Sullivan, 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 (29.93"Hg).
Average wind speed in August
Sullivan, IN
- Average wind speed in August: 5.8mph
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 (5.8mph).
Average humidity in August
Sullivan, IN
- Average humidity in August: 80%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Sullivan, IN
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is April (4.06").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in August
Sullivan, IN
- Average rainfall days in August: 13.6 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in August
Sullivan, IN
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Sullivan, IN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Sullivan, IN
- Average daylight in August: 13h and 36min
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 12min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in August
Sullivan, IN
- Average sunshine days in August: 14.7 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in August
Sullivan, IN
- Average UV index in August: 6
The months with the highest UV index are May, 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
Sullivan, IN
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in August
Sullivan, 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).
