August weather forecastDunkerton, IA
August
Weather in August
The last month of the summer, August, is another warm month in Dunkerton, Iowa, with temperature in the range of an average low of 60.6°F (15.9°C) and an average high of 78.6°F (25.9°C).Temperature
August's advent notes a subtle adjustment in average high-temperature to a still warm 78.6°F (25.9°C) from July. August brings with it a nighttime average temperature of 60.6°F (15.9°C).Humidity
In Dunkerton, the average relative humidity in August is 82%.Rainfall
In Dunkerton, Iowa, in August, during 14.9 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Dunkerton, during the entire year, the rain falls for 143.2 days and collects up to 31.02" (788mm) of precipitation.Snowfall
In Dunkerton, snow does not fall in June through September.Daylight
In Dunkerton, the average length of the day in August is 13h and 52min.On the first day of August in Dunkerton, sunrise is at 6:01 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 7:44 pm CDT.
Sunshine
In August, the average sunshine 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 moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In August, the maximum UV index of 5 suggests this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Dunkerton, IA
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in August: 60.6°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 (12.2°F).
Average pressure in August
Dunkerton, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Dunkerton, IA
- Average wind speed in August: 7mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in August
Dunkerton, IA
- Average humidity in August: 82%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Dunkerton, IA
- Average rainfall in August: 2.36"
The wettest month (with the highest rainfall) is June (4.88").
The driest months (with the least rainfall) are January and February (1.14").
Average rainfall days in August
Dunkerton, IA
- Average rainfall days in August: 14.9 days
The month with the highest number of rainy days is June (19.6 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in August
Dunkerton, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Dunkerton, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Dunkerton, 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: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Dunkerton, IA
- Average sunshine days in August: 13.3 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in August
Dunkerton, IA
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Dunkerton, 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
Dunkerton, 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).
