Average Weather in July in Olathe Kansas, United States
Daily high temperatures are around 88°F, rarely falling below 80°F or exceeding 98°F. The highest daily average high temperature is 89°F on July 21.
Daily low temperatures are around 70°F, rarely falling below 62°F or exceeding 77°F. The highest daily average low temperature is 70°F on July 22.
For reference, on July 21, the hottest day of the year, temperatures in Olathe typically range from 70°F to 89°F, while on January 6, the coldest day of the year, they range from 23°F to 39°F.
Average High and Low Temperature in July
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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 July
The month of July in Olathe experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 31% throughout the month.
The clearest day of the month is July 19, with clear, mostly clear, or partly cloudy conditions 71% of the time.
For reference, on February 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on August 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in July
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 Olathe, the chance of a wet day over the course of July is decreasing, starting the month at 37% and ending it at 32%.
For reference, the year's highest daily chance of a wet day is 46% on June 8, and its lowest chance is 10% on January 12.
Probability of Precipitation in July
The average sliding 31-day rainfall during July in Olathe is decreasing, starting the month at 4.2 inches, when it rarely exceeds 7.0 inches or falls below 1.5 inches, and ending the month at 3.3 inches, when it rarely exceeds 6.0 inches or falls below 0.8 inches.
Average Monthly Rainfall in July
Over the course of July in Olathe, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 39 minutes, implying an average daily decrease of 1 minute, 18 seconds, and weekly decrease of 9 minutes, 5 seconds.
The shortest day of the month is July 31, with 14 hours, 12 minutes of daylight and the longest day is July 1, with 14 hours, 51 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month in Olathe is 5:57 AM on July 1 and the latest sunrise is 22 minutes later at 6:19 AM on July 31.
The latest sunset is 8:48 PM on July 1 and the earliest sunset is 17 minutes earlier at 8:31 PM on July 31.
Daylight saving time is observed in Olathe during 2018, but it neither starts nor ends during July, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:54 AM and sets 14 hours, 54 minutes later, at 8:48 PM, while on December 21, the shortest day of the year, it rises at 7:34 AM and sets 9 hours, 26 minutes later, at 5:00 PM.
Sunrise & Sunset with Twilight in July
The chance that a given day will be muggy in Olathe is gradually increasing during July, rising from 61% to 63% over the course of the month.
The highest chance of a muggy day during July is 67% on July 22.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 67% of the time, while on December 2, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in July
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Olathe is gradually decreasing during July, decreasing from 8.9 miles per hour to 8.1 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 12.6 miles per hour, while on August 7, the calmest day of the year, the daily average wind speed is 8.0 miles per hour.
Average Wind Speed in July
Wind Direction in July
The growing season in Olathe typically lasts for 6.7 months (206 days), from around April 6 to around October 30, rarely starting before March 19 or after April 23, and rarely ending before October 12 or after November 17.
The month of July in Olathe is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in July
The average accumulated growing degree days in Olathe are rapidly increasing during July, increasing by 831°F, from 1,563°F to 2,394°F, over the course of the month.
Growing Degree Days in July
The average daily incident shortwave solar energy in Olathe is essentially constant during July, remaining within 0.2 kWh of 6.8 kWh throughout.
The highest average daily incident shortwave solar energy during July is 7.0 kWh on July 9.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of Olathe are 38.881 deg latitude, -94.819 deg longitude, and 1,027 ft elevation.
The topography within 2 miles of Olathe contains only modest variations in elevation, with a maximum elevation change of 141 feet and an average elevation above sea level of 1,027 feet. Within 10 miles also contains only modest variations in elevation (367 feet). Within 50 miles contains only modest variations in elevation (538 feet).
The area within 2 miles of Olathe is covered by artificial surfaces (98%), within 10 miles by artificial surfaces (46%) and cropland (39%), and within 50 miles by cropland (66%) and trees (16%).
This report illustrates the typical weather in Olathe 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Olathe.
For each station, the records are corrected for the elevation difference between that station and Olathe 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 Olathe is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Olathe and a given station.
The stations contributing to this reconstruction are: Johnson County Executive Airport (50%, 8 kilometers, southeast); New Century AirCenter (45%, 8 kilometers, southwest); and Charles B. Wheeler Downtown Airport (6%, 33 kilometers, northeast).
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Time zones for aiports and weather stations are provided by AskGeo.com .