August weather forecastColwell, IA
August
Weather in August
The last month of the summer, August, is another warm month in Colwell, Iowa, with an average temperature fluctuating between 77.5°F (25.3°C) and 59.9°F (15.5°C).Temperature
The weather during August records an average high-temperature of a still warm 77.5°F (25.3°C), closely mirroring the preceding month. The temperature lowers to an average of 59.9°F (15.5°C) during August nights.Humidity
In Colwell, the average relative humidity in August is 82%.Rainfall
In August, in Colwell, the rain falls for 13.2 days. Throughout August, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 136.1 rainfall days, and 27.32" (694mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 53min.On the first day of August, sunrise is at 6:01 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:46 pm CDT.
Sunshine
July and August, with an average of 9.7h of sunshine, are months with the most sunshine.UV index
In Colwell, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 5 in August translates into these instructions:
Ensure safety - Recommendations to avert sunburn are presented. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Colwell, IA
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in August: 59.9°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 (10.6°F).
Average pressure in August
Colwell, IA
- Average pressure in August: 29.96"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
Colwell, IA
- Average wind speed in August: 7.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in August
Colwell, IA
- Average humidity in August: 82%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Colwell, IA
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in August
Colwell, IA
- Average rainfall days in August: 13.2 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Colwell, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Colwell, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Colwell, 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 months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Colwell, IA
- Average sunshine days in August: 15.2 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in August
Colwell, 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 and December (UV index 1).
Average cloud cover in August
Colwell, 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
Colwell, IA
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
