August weather forecastChelsea, IA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Chelsea, Iowa, with an average temperature varying between 79.5°F (26.4°C) and 61.9°F (16.6°C).Temperature
Chelsea, Iowa, experiences a subtle adjustment in high-temperatures to a still moderately hot 79.5°F (26.4°C) with the onset of August, maintaining near parity with July's 80.8°F (27.1°C). During August nights, Chelsea records an average temperature of 61.9°F (16.6°C).Humidity
In August, the average relative humidity is 81%.Rainfall
In Chelsea, in August, during 13.3 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Chelsea, during the entire year, the rain falls for 139 days and collects up to 29.49" (749mm) of precipitation.Snowfall
In Chelsea, snow does not fall in June through September.Daylight
In Chelsea, the average length of the day in August is 13h and 49min.On the first day of August, sunrise is at 6:04 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:44 pm CDT.
Sunshine
In August, the average sunshine is 9.7h.UV index
The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 during August translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. 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
Average temperature in August
Chelsea, IA
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in August: 61.9°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in August
Chelsea, IA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Chelsea, IA
- Average wind speed in August: 7mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in August
Chelsea, IA
- Average humidity in August: 81%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Chelsea, IA
- Average rainfall in August: 2.24"
The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in August
Chelsea, IA
- Average rainfall days in August: 13.3 days
The month with the highest number of rainy days is June (19.3 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in August
Chelsea, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Chelsea, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Chelsea, IA
- Average daylight in August: 13h and 48min
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 42min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in August
Chelsea, IA
- Average sunshine days in August: 15.1 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in August
Chelsea, 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, February, October, November and December (UV index 2).
Average cloud cover in August
Chelsea, IA
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in August
Chelsea, IA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
