August weather forecastGreen Island, IA
August
Weather in August
August, the last month of the summer in Green Island, is another warm month, with an average temperature varying between 61°F (16.1°C) and 79°F (26.1°C).Temperature
Green Island experiences a recorded average high-temperature of a still warm 79°F (26.1°C) in August, closely aligned with July's 79.9°F (26.6°C). Green Island records an average nighttime low of 61°F (16.1°C) in August.Humidity
The average relative humidity in August is 81%.Rainfall
In Green Island, during August, the rain falls for 13.5 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Green Island, during the entire year, the rain falls for 145.6 days and collects up to 28.9" (734mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In August, the average length of the day is 13h and 50min.On the first day of August, sunrise is at 5:55 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:36 pm CDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
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 average individuals.Note: An average maximum UV index of 5 in August leads to these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Green Island, IA
- Average high temperature in August: 79°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in August: 61°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in August
Green Island, IA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Green Island, IA
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in August
Green Island, IA
- Average humidity in August: 81%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Green Island, IA
- Average rainfall in August: 1.93"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in August
Green Island, IA
- Average rainfall days in August: 13.5 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in August
Green Island, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Green Island, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.6 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
Green Island, IA
- Average daylight in August: 13h and 48min
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 48min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Green Island, IA
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.5 days).
Average UV index in August
Green Island, IA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Green Island, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in August
Green Island, IA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
