August weather forecastRock Rapids, IA
August
Weather in August
The last month of the summer, August, is another warm month in Rock Rapids, Iowa, with an average temperature varying between 59.5°F (15.3°C) and 80.2°F (26.8°C).Temperature
As August takes its course, Rock Rapids's average high-temperature registers at a still moderately hot 80.2°F (26.8°C), closely aligning with the preceding month. Rock Rapids, during August, witnesses an average low-temperature of 59.5°F (15.3°C).Humidity
The average relative humidity in August is 76%.Rainfall
In August, the rain falls for 13.3 days. Throughout August, 2.17" (55mm) of precipitation is accumulated. In Rock Rapids, during the entire year, the rain falls for 119.2 days and collects up to 22.13" (562mm) of precipitation.Snowfall
In Rock Rapids, snow does not fall in June through September.Daylight
In Rock Rapids, the average length of the day in August is 13h and 55min.On the first day of August in Rock Rapids, sunrise is at 6:15 am and sunset at 8:46 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 8:01 pm CDT.
Sunshine
The average sunshine in August in Rock Rapids, Iowa, is 9.8h.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 radiation for the ordinary person.Note: A maximum daily UV index of 5 during August morphs into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Rock Rapids, IA
- Average high temperature in August: 80.2°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 (23°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure in August
Rock Rapids, IA
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in August
Rock Rapids, IA
- Average wind speed in August: 8mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in August
Rock Rapids, IA
- Average humidity in August: 76%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall in August
Rock Rapids, IA
- Average rainfall in August: 2.17"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in August
Rock Rapids, IA
- Average rainfall days in August: 13.3 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in August
Rock Rapids, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Rock Rapids, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Rock Rapids, IA
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 9h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in August
Rock Rapids, IA
- Average sunshine days in August: 15.1 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in August
Rock Rapids, 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 January (UV index 1).
Average cloud cover in August
Rock Rapids, IA
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in August
Rock Rapids, 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).
