August weather forecastSibley, IA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Sibley, Iowa, with an average temperature varying between 78.6°F (25.9°C) and 59.5°F (15.3°C).Temperature
Sibley experiences a subtle adjustment in high-temperatures to a still moderately hot 78.6°F (25.9°C) with the onset of August, maintaining near parity with July's 80.6°F (27°C). During the nights in August, Sibley experiences a consistent average temperature of 59.5°F (15.3°C).Humidity
In Sibley, Iowa, the average relative humidity in August is 78%.Rainfall
In Sibley, in August, during 13.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Sibley, during the entire year, the rain falls for 122.3 days and collects up to 22.24" (565mm) of precipitation.Snowfall
June through September are months without snowfall in Sibley.Daylight
The average length of the day in August is 13h and 55min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:44 pm. On the last day of August, sunrise is at 6:46 am and sunset at 7:59 pm CDT.
Sunshine
In Sibley, the average sunshine in August is 9.7h.UV index
In August, the average daily maximum UV index in Sibley is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 5 in August suggests the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sibley, IA
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure in August
Sibley, IA
- Average pressure in August: 29.95"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
Sibley, IA
- Average wind speed in August: 8mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in August
Sibley, IA
- Average humidity in August: 78%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).
Average rainfall in August
Sibley, IA
- Average rainfall in August: 2.13"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in August
Sibley, IA
- Average rainfall days in August: 13.5 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in August
Sibley, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Sibley, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sibley, 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 42min
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 0min).
Average sunshine days in August
Sibley, IA
- Average sunshine days in August: 14.6 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in August
Sibley, IA
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in August
Sibley, IA
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in August
Sibley, 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).
