August weather forecastBrownstown, IL
August
Weather in August
August, the last month of the summer in Brownstown, is another warm month, with an average temperature fluctuating between 82.4°F (28°C) and 65.1°F (18.4°C).Temperature
Brownstown marks the arrival of August with an average high-temperature of a still moderately hot 82.4°F (28°C), hardly different from July's 83.7°F (28.7°C). Brownstown records an average nighttime low of 65.1°F (18.4°C) in August.Heat index
For August, the heat index is estimated at a tropical 89.6°F (32°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
The months with the highest humidity in Brownstown, Illinois, are July and August, with an average relative humidity of 81%.Rainfall
In Brownstown, in August, during 12.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, there are 139.3 rainfall days, and 23.94" (608mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Brownstown, the average length of the day in August is 13h and 38min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:06 pm. On the last day of August, in Brownstown, Illinois, sunrise is at 6:24 am and sunset at 7:27 pm CDT.
Sunshine
In August, the average sunshine is 9.9h.UV index
The months with the highest UV index in Brownstown are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 6 during August translates into these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Brownstown, IL
- Average high temperature in August: 82.4°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: 65.1°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in August
Brownstown, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Brownstown, IL
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in August
Brownstown, IL
- Average humidity in August: 81%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Brownstown, IL
- Average rainfall in August: 2.13"
The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in August
Brownstown, IL
- Average rainfall days in August: 12.8 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in August
Brownstown, IL
- Average snowfall in August: 0"
The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Brownstown, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (5.7 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
Brownstown, IL
- 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 54min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in August
Brownstown, IL
- Average sunshine days in August: 14.4 days
The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index in August
Brownstown, IL
- 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
Brownstown, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in August
Brownstown, IL
- 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).
