Average Weather in July in Kennewick Washington, United States
Daily high temperatures increase by 5°F, from 88°F to 93°F, rarely falling below 77°F or exceeding 102°F.
Daily low temperatures increase by 3°F, from 57°F to 60°F, rarely falling below 49°F or exceeding 68°F. The highest daily average low temperature is 60°F on July 27.
For reference, on July 30, the hottest day of the year, temperatures in Kennewick typically range from 60°F to 93°F, while on December 29, the coldest day of the year, they range from 27°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 Kennewick experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 28% to 18%. The lowest chance of overcast or mostly cloudy conditions is 18% on July 29.
The clearest day of the month is July 29, with clear, mostly clear, or partly cloudy conditions 82% of the time.
For reference, on January 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 82%.
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 Kennewick, the chance of a wet day over the course of July is gradually decreasing, starting the month at 6% and ending it at 4%.
For reference, the year's highest daily chance of a wet day is 25% on November 29, and its lowest chance is 3% on August 18.
Probability of Precipitation in July
The average sliding 31-day rainfall during July in Kennewick is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.7 inches.
Average Monthly Rainfall in July
Over the course of July in Kennewick, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 52 minutes, implying an average daily decrease of 1 minute, 45 seconds, and weekly decrease of 12 minutes, 13 seconds.
The shortest day of the month is July 31, with 14 hours, 51 minutes of daylight and the longest day is July 1, with 15 hours, 43 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month in Kennewick is 5:08 AM on July 1 and the latest sunrise is 28 minutes later at 5:37 AM on July 31.
The latest sunset is 8:51 PM on July 1 and the earliest sunset is 24 minutes earlier at 8:27 PM on July 31.
Daylight saving time is observed in Kennewick 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 5:04 AM and sets 15 hours, 47 minutes later, at 8:51 PM, while on December 21, the shortest day of the year, it rises at 7:36 AM and sets 8 hours, 37 minutes later, at 4:13 PM.
Sunrise & Sunset with Twilight in July
The chance that a given day will be muggy in Kennewick is essentially constant during July, remaining around 0% throughout.
The highest chance of a muggy day during July is 1% on July 22.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, 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 Kennewick is gradually decreasing during July, decreasing from 7.9 miles per hour to 7.3 miles per hour over the course of the month.
For reference, on March 27, the windiest day of the year, the daily average wind speed is 8.4 miles per hour, while on September 9, the calmest day of the year, the daily average wind speed is 6.8 miles per hour.
Average Wind Speed in July
Wind Direction in July
The growing season in Kennewick typically lasts for 5.7 months (174 days), from around April 23 to around October 15, rarely starting before March 30 or after May 14, and rarely ending before September 26 or after November 1.
The month of July in Kennewick 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 Kennewick are rapidly increasing during July, increasing by 709°F, from 1,217°F to 1,926°F, over the course of the month.
Growing Degree Days in July
The average daily incident shortwave solar energy in Kennewick is essentially constant during July, remaining within 0.2 kWh of 7.6 kWh throughout.
The highest average daily incident shortwave solar energy during July is 7.8 kWh on July 14.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of Kennewick are 46.211 deg latitude, -119.137 deg longitude, and 394 ft elevation.
The topography within 2 miles of Kennewick contains only modest variations in elevation, with a maximum elevation change of 269 feet and an average elevation above sea level of 414 feet. Within 10 miles contains only modest variations in elevation (1,900 feet). Within 50 miles contains very significant variations in elevation (3,750 feet).
The area within 2 miles of Kennewick is covered by artificial surfaces (80%) and water (18%), within 10 miles by cropland (42%) and artificial surfaces (24%), and within 50 miles by shrubs (42%) and cropland (42%).
This report illustrates the typical weather in Kennewick 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 Kennewick.
For each station, the records are corrected for the elevation difference between that station and Kennewick 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 Kennewick is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Kennewick and a given station.
The stations contributing to this reconstruction are: Tri-Cities Airport (92%, 6 kilometers, north); Hermiston Municipal Airport (5%, 44 kilometers, south); and Walla Walla Regional Airport (2.5%, 67 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .