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
Upon the onset of August, Dubuque witnesses an average high-temperature of a still moderately hot 78.6°F (25.9°C), showing a close resemblance to the prior month. August nights are marked by an average temperature drop to a moderate 60.4°F (15.8°C).Humidity
The average relative humidity in August in Dubuque, Iowa, is 81%.Rainfall
In August, the rain falls for 12.1 days. Throughout August, 1.73" (44mm) of precipitation is accumulated. Throughout the year, there are 135.3 rainfall days, and 27.4" (696mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Dubuque, the average length of the day in August is 13h and 51min.On the first day of the month, sunrise is at 5:55 am and sunset at 8:22 pm. On the last day of August, in Dubuque, sunrise is at 6:27 am and sunset at 7:38 pm CDT.
Sunshine
July and August, with an average of 9.7h of sunshine, are months with the most sunshine.UV index
In Dubuque, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 5 during August translates into the following directions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
When is the sunrise / sunset in August?
What are the months with the most sunshine in Dubuque?
How long on average sun shines in August?
How high is the UV index in August?
Average temperature in August
Dubuque, IA
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in August: 60.4°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in August
Dubuque, 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
Dubuque, IA
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Dubuque, IA
- Average humidity in August: 81%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in August
Dubuque, IA
- Average rainfall in August: 1.73"
The wettest months (with the highest rainfall) are May and June (3.7").
The driest months (with the least rainfall) are January and February (1.14").
Average rainfall days in August
Dubuque, IA
- Average rainfall days in August: 12.1 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in August
Dubuque, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Dubuque, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.8 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
Dubuque, 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 6min).
- Average sunshine in August: 9h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Dubuque, IA
- Average sunshine days in August: 17.4 days
The months with the most sunshine days are November and December (17.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Dubuque, 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, November and December (UV index 1).
Average cloud cover in August
Dubuque, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Dubuque, 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).
Dubuque, Iowa, USA
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