Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The arrival of August marks a slight shift to an average high-temperature of a still moderately hot 80.1°F (26.7°C) from July's 82°F (27.8°C). Green Brier, during the month of August, experiences an average low-temperature of 61.5°F (16.4°C).Humidity
In Green Brier, Iowa, the average relative humidity in August is 80%.Rainfall
In Green Brier, Iowa, in August, during 13 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Green Brier, during the entire year, the rain falls for 125.7 days and collects up to 26.5" (673mm) of precipitation.Snowfall
In Green Brier, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 49min.On the first day of the month, sunrise is at 6:12 am and sunset at 8:35 pm. On the last day of August, in Green Brier, Iowa, sunrise is at 6:43 am and sunset at 7:52 pm CDT.
Sunshine
In Green Brier, Iowa, the average sunshine in August is 9.6h.UV index
In Green Brier, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 5 in August leads to these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Green Brier in August?
What is the average humidity in August in Green Brier?
How much does it rain in Green Brier in August?
When it does not snow in Green Brier?
What is the average length of the day in August in Green Brier?
What time are sunrise and sunset in August in Green Brier?
How long on average sun shines in August in Green Brier?
What is the UV index intensity in August in Green Brier?
Average temperature in August
Green Brier, IA
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in August
Green Brier, 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 (29.88"Hg).
Average wind speed in August
Green Brier, IA
- Average wind speed in August: 7.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in August
Green Brier, IA
- Average humidity in August: 80%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in August
Green Brier, IA
- Average rainfall in August: 2.44"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in August
Green Brier, IA
- Average rainfall days in August: 13 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in August
Green Brier, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Green Brier, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Green Brier, IA
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 9h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Green Brier, IA
- Average sunshine days in August: 16.3 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in August
Green Brier, 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, February, October, November and December (UV index 2).
Average cloud cover in August
Green Brier, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in August
Green Brier, IA
- Average visibility in August: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Green Brier, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location