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
Dedham's entry into August measures an average high-temperature of a still moderately hot 79.5°F (26.4°C), closely parallel to the preceding month. Dedham records a mean low-temperature of 61.5°F (16.4°C) in August.Humidity
In Dedham, the average relative humidity in August is 80%.Rainfall
In August, the rain falls for 12 days. Throughout August, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 130.1 rainfall days, and 27.28" (693mm) of precipitation is accumulated.Snowfall
In Dedham, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 49min.On the first day of August, sunrise is at 6:13 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:53 pm CDT.
Sunshine
In August, the average sunshine is 9.7h.UV index
In Dedham, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In August, the maximum UV index of 5 suggests this advice:
Take precautions - Protection against sun damage is advised. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing 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 August temperatures?
What is the average humidity in August?
How much does it rain in August?
When it does not snow in Dedham?
How many hours of daylight does Dedham have in August?
When are sunrise and sunset in August?
How long on average sun shines in August?
What is the UV index reading in August in Dedham?
Average temperature in August
Dedham, IA
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in August
Dedham, 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
Dedham, IA
- Average wind speed in August: 7.4mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in August
Dedham, IA
- Average humidity in August: 80%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April and October (69%).
Average rainfall in August
Dedham, IA
- Average rainfall in August: 2.32"
The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in August
Dedham, IA
- Average rainfall days in August: 12 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Dedham, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Dedham, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Dedham, 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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Dedham, IA
- Average sunshine days in August: 15.9 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (10 days).
Average UV index in August
Dedham, 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
Dedham, 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
Dedham, IA
- Average visibility in August: 5mi
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
Dedham, Iowa, USA
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