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
The onset of August brings an average high-temperature of a still warm 79.7°F (26.5°C), nearly matching the July temperature. Charter Oak records a consistent low-temperature of 61.7°F (16.5°C) during August nights.Humidity
The average relative humidity in August is 80%.Rainfall
In Charter Oak, in August, it is raining for 13.7 days, with typically 2.6" (66mm) of accumulated precipitation. In Charter Oak, during the entire year, the rain falls for 123 days and collects up to 24.72" (628mm) of precipitation.Snowfall
June through September are months without snowfall in Charter Oak.Daylight
In Charter Oak, the average length of the day in August is 13h and 50min.On the first day of August, sunrise is at 6:16 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:57 pm CDT.
Sunshine
The average sunshine in August is 9.5h.UV index
In Charter Oak, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In August, a daily UV index of 5 turns into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature in Charter Oak?
What is the average humidity in August in Charter Oak?
How many days does it rain in August in Charter Oak?
When it does not snow in Charter Oak?
How many hours of daylight does Charter Oak have in August?
When are sunrise and sunset in August in Charter Oak?
How many hours of sunshine does Charter Oak have in August?
How high is the UV index in August in Charter Oak?
Average temperature in August
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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 3min
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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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
Charter Oak, 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).
Charter Oak, Iowa, USA
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