August weather forecastGreenville, IA
August
Weather in August
August, the last month of the summer in Greenville, is also a moderately hot month, with an average temperature fluctuating between 59.5°F (15.3°C) and 78.3°F (25.7°C).Temperature
Greenville notes an average high-temperature of a still moderately hot 78.3°F (25.7°C) in August, displaying minor variation from July. Nighttime temperature experiences an average drop to a mild 59.5°F (15.3°C) in August.Humidity
The average relative humidity in August is 79%.Rainfall
In Greenville, in August, during 12.6 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In Greenville, during the entire year, the rain falls for 112.3 days and collects up to 15.31" (389mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In August, the average length of the day is 13h and 53min.On the first day of August, sunrise is at 6:12 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:56 pm CDT.
Sunshine
In Greenville, the average sunshine in August is 9.6h.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. To guard against the harmful effects of the Sun, minimize exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Greenville, IA
- Average high temperature in August: 78.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in August
Greenville, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in August
Greenville, IA
- Average wind speed in August: 7.8mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in August
Greenville, IA
- Average humidity in August: 79%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (68%).
Average rainfall in August
Greenville, IA
- Average rainfall in August: 1.61"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in August
Greenville, IA
- Average rainfall days in August: 12.6 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in August
Greenville, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Greenville, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Greenville, IA
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- 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 0min).
Average sunshine days in August
Greenville, IA
- Average sunshine days in August: 15.3 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in August
Greenville, IA
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in August
Greenville, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in August
Greenville, IA
- 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).
