Average Weather in August in De Soto Iowa, United States
Daily high temperatures decrease by 3°F, from 85°F to 81°F, rarely falling below 72°F or exceeding 94°F.
Daily low temperatures decrease by 4°F, from 66°F to 62°F, rarely falling below 52°F or exceeding 74°F.
For reference, on July 20, the hottest day of the year, temperatures in De Soto typically range from 67°F to 86°F, while on January 21, the coldest day of the year, they range from 16°F to 32°F.
Average High and Low Temperature in August
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in August
The month of August in De Soto experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 30% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 29% on August 26.
The clearest day of the month is August 26, with clear, mostly clear, or partly cloudy conditions 71% of the time.
For reference, on February 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on August 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
Cloud Cover Categories in August
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In De Soto, the chance of a wet day over the course of August is decreasing, starting the month at 35% and ending it at 31%.
For reference, the year's highest daily chance of a wet day is 44% on June 8, and its lowest chance is 8% on January 9.
Probability of Precipitation in August
The average sliding 31-day rainfall during August in De Soto is gradually decreasing, starting the month at 3.6 inches, when it rarely exceeds 6.6 inches or falls below 1.3 inches, and ending the month at 3.3 inches, when it rarely exceeds 6.7 inches or falls below 1.2 inches.
Average Monthly Rainfall in August
Over the course of August in De Soto, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 13 minutes, implying an average daily decrease of 2 minutes, 26 seconds, and weekly decrease of 17 minutes, 4 seconds.
The shortest day of the month is August 31, with 13 hours, 9 minutes of daylight and the longest day is August 1, with 14 hours, 23 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in De Soto is 6:10 AM on August 1 and the latest sunrise is 30 minutes later at 6:41 AM on August 31.
The latest sunset is 8:33 PM on August 1 and the earliest sunset is 43 minutes earlier at 7:50 PM on August 31.
Daylight saving time is observed in De Soto during 2018, but it neither starts nor ends during August, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:42 AM and sets 15 hours, 11 minutes later, at 8:53 PM, while on December 21, the shortest day of the year, it rises at 7:39 AM and sets 9 hours, 10 minutes later, at 4:49 PM.
Sunrise & Sunset with Twilight in August
The chance that a given day will be muggy in De Soto is rapidly decreasing during August, falling from 53% to 35% over the course of the month.
For reference, on July 21, the muggiest day of the year, there are muggy conditions 56% of the time, while on November 15, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in August
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in De Soto is gradually increasing during August, increasing from 8.2 miles per hour to 9.0 miles per hour over the course of the month.
For reference, on April 1, the windiest day of the year, the daily average wind speed is 12.9 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 8.1 miles per hour.
The lowest daily average wind speed during August is 8.1 miles per hour on August 3.
Average Wind Speed in August
Wind Direction in August
The growing season in De Soto typically lasts for 6.0 months (184 days), from around April 15 to around October 16, rarely starting before March 29 or after May 2, and rarely ending before September 26 or after November 6.
The month of August in De Soto is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in August
The average accumulated growing degree days in De Soto are rapidly increasing during August, increasing by 684°F, from 2,050°F to 2,734°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in De Soto is gradually decreasing during August, falling by 0.9 kWh, from 6.6 kWh to 5.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in August
For the purposes of this report, the geographical coordinates of De Soto are 41.532 deg latitude, -94.010 deg longitude, and 974 ft elevation.
The topography within 2 miles of De Soto contains only modest variations in elevation, with a maximum elevation change of 194 feet and an average elevation above sea level of 953 feet. Within 10 miles also contains only modest variations in elevation (335 feet). Within 50 miles contains only modest variations in elevation (794 feet).
The area within 2 miles of De Soto is covered by cropland (93%), within 10 miles by cropland (89%), and within 50 miles by cropland (89%).
This report illustrates the typical weather in De Soto year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in De Soto.
For each station, the records are corrected for the elevation difference between that station and De Soto according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at De Soto is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between De Soto and a given station.
The stations contributing to this reconstruction are: Des Moines International Airport (41%, 30 kilometers, east); Perry Municipal Airport (32%, 35 kilometers, north); Osceola Municipal Airport (14%, 60 kilometers, southeast); and Creston Municipal Airport (12%, 65 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .