August weather forecastClear Lake, IA
August
Weather in August
The last month of the summer, August, is another warm month in Clear Lake, Iowa, with an average temperature fluctuating between 77.4°F (25.2°C) and 60.3°F (15.7°C).Temperature
Clear Lake's transition from July to August introduces an average high-temperature of a still warm 77.4°F (25.2°C), marking an insignificant variation from the 79.3°F (26.3°C). Clear Lake records a steady low-temperature average of 60.3°F (15.7°C) during August.Humidity
In Clear Lake, the average relative humidity in August is 82%.Rainfall
In Clear Lake, during August, the rain falls for 15.8 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 145.9 rainfall days, and 28.82" (732mm) of precipitation is accumulated.Snowfall
In Clear Lake, Iowa, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 6:04 am and sunset at 8:34 pm. On the last day of August, sunrise is at 6:37 am and sunset at 7:49 pm CDT.
Sunshine
In Clear Lake, the average sunshine in August is 9.7h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In August, the maximum UV index of 5 suggests these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Clear Lake, IA
- Average high temperature in August: 77.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in August: 60.3°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in August
Clear Lake, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in August
Clear Lake, IA
- Average wind speed in August: 7.3mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in August
Clear Lake, IA
- Average humidity in August: 82%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Clear Lake, IA
- Average rainfall in August: 2.8"
The wettest month (with the highest rainfall) is June (4.65").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in August
Clear Lake, IA
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in August
Clear Lake, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (7.48").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Clear Lake, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Clear Lake, IA
- Average daylight in August: 13h and 54min
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 6min).
- Average sunshine in August: 9h and 42min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Clear Lake, IA
- Average sunshine days in August: 13 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (8 days).
Average UV index in August
Clear Lake, 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 and December (UV index 1).
Average cloud cover in August
Clear Lake, 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
Clear Lake, 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).
