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
August's advent denotes a minor fluctuation in the average high-temperature to a still warm 77.5°F (25.3°C) from July's 79°F (26.1°C). The average temperature during August nights is registered at a refreshing 59°F (15°C).Humidity
In Waterville, the average relative humidity in August is 81%.Rainfall
In August, the rain falls for 14.2 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. Throughout the year, in Waterville, there are 144.7 rainfall days, and 30.94" (786mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In August, the average length of the day is 13h and 54min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:26 pm. On the last day of August, sunrise is at 6:29 am and sunset at 7:41 pm CDT.
Sunshine
With an average of 9.8h of sunshine, August has the most sunshine of the year in Waterville.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 5 in August translates into these instructions:
Make use of precautions - It is urged to ward off sun damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Waterville have in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How many hours of sunshine does Waterville have in August?
What is the UV index reading in August?
Average temperature in August
Waterville, IA
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in August: 59°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in August
Waterville, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Waterville, IA
- Average wind speed in August: 6.9mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in August
Waterville, IA
- Average humidity in August: 81%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).
Average rainfall in August
Waterville, IA
- Average rainfall in August: 2.56"
The wettest month (with the highest rainfall) is June (5.24").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in August
Waterville, IA
- Average rainfall days in August: 14.2 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Waterville, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Waterville, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Waterville, IA
- Average daylight in August: 13h and 5min
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 0min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Waterville, IA
- Average sunshine days in August: 13.5 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is June (7.6 days).
Average UV index in August
Waterville, IA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in August
Waterville, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Waterville, IA
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Waterville, Iowa, USA
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