August weather forecastDefiance, IA
August
Weather in August
August, the last month of the summer in Defiance, is also a moderately hot month, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 79.7°F (26.5°C).Temperature
August experiences an average high-temperature of a still moderately hot 79.7°F (26.5°C), barely different from July's 81.7°F (27.6°C). During the month of August, Defiance's nighttime temperature lowers to an average of 61.7°F (16.5°C).Humidity
The average relative humidity in August is 80%.Rainfall
In Defiance, during August, the rain falls for 13.7 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 123 rainfall days, and 24.72" (628mm) of precipitation is accumulated.Snowfall
In Defiance, 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 6:16 am and sunset at 8:39 pm. On the last day of August, sunrise is at 6:46 am and sunset at 7:55 pm CDT.
Sunshine
In Defiance, the average sunshine in August is 9.5h.UV index
In Defiance, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In August, the UV index of 5 transforms into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Defiance, IA
- Average high temperature in August: 79.7°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in August: 61.7°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in August
Defiance, 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
Defiance, IA
- Average wind speed in August: 7.6mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in August
Defiance, IA
- Average humidity in August: 80%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in August
Defiance, IA
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in August
Defiance, IA
- Average rainfall days in August: 13.7 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in August
Defiance, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Defiance, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Defiance, 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Defiance, IA
- Average sunshine days in August: 15 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in August
Defiance, IA
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in August
Defiance, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in August
Defiance, IA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
