June Weather at Tri-Cities Airport Washington, United States

Daily high temperatures increase by 8°F, from 80°F to 88°F, rarely falling below 69°F or exceeding 98°F.

Daily low temperatures increase by 4°F, from 52°F to 57°F, rarely falling below 45°F or exceeding 65°F.

For reference, on July 29, the hottest day of the year, temperatures at Tri-Cities Airport typically range from 59°F to 93°F, while on December 28, the coldest day of the year, they range from 27°F to 39°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on June. 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.

Skopje, Macedonia (5,881 miles away) is the far-away foreign place with temperatures most similar to Tri-Cities Airport (view comparison).

© OpenStreetMap contributors

Compare Tri-Cities Airport to another city:

CompareMap

The month of June at Tri-Cities Airport experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 44% to 28%.

The clearest day of the month is June 30, with clear, mostly clear, or partly cloudy conditions 72% 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 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 82%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Tri-Cities Airport, the chance of a wet day over the course of June is rapidly decreasing, starting the month at 13% and ending it at 6%.

For reference, the year's highest daily chance of a wet day is 24% on November 28, and its lowest chance is 3% on August 16.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during June at Tri-Cities Airport is gradually decreasing, starting the month at 0.7 inches, when it rarely exceeds 1.3 inches or falls below 0.2 inches, and ending the month at 0.3 inches, when it rarely exceeds 0.7 inches.

Over the course of June at Tri-Cities Airport, the length of the day is essentially constant. The shortest day of the month is June 1, with 15 hours, 34 minutes of daylight and the longest day is June 20, with 15 hours, 48 minutes of daylight.

The earliest sunrise of the month at Tri-Cities Airport is 5:03 AM on June 15 and the latest sunrise is 4 minutes later at 5:08 AM on June 30.

The earliest sunset is 8:41 PM on June 1 and the latest sunset is 11 minutes later at 8:52 PM on June 25.

Daylight saving time is observed at Tri-Cities Airport during 2024, but it neither starts nor ends during June, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:04 AM and sets 15 hours, 48 minutes later, at 8:52 PM, while on December 21, the shortest day of the year, it rises at 7:36 AM and sets 8 hours, 36 minutes later, at 4:13 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for June 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy at Tri-Cities Airport is essentially constant during June, remaining around 0% throughout.

For reference, on July 21, the muggiest day of the year, there are muggy conditions 1% of the time, while on September 23, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Tri-Cities Airport is essentially constant during June, remaining within 0.2 miles per hour of 7.9 miles per hour throughout.

For reference, on March 26, the windiest day of the year, the daily average wind speed is 8.4 miles per hour, while on September 8, the calmest day of the year, the daily average wind speed is 6.7 miles per hour.

The highest daily average wind speed during June is 8.1 miles per hour on June 7.

The hourly average wind direction at Tri-Cities Airport throughout June is predominantly from the west, with a peak proportion of 70% on June 29.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Tri-Cities Airport typically lasts for 5.6 months (171 days), from around April 24 to around October 12, rarely starting before March 31 or after May 13, and rarely ending before September 23 or after October 31.

The month of June at Tri-Cities Airport is reliably fully within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days at Tri-Cities Airport are rapidly increasing during June, increasing by 529°F, from 677°F to 1,206°F, over the course of the month.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy at Tri-Cities Airport is gradually increasing during June, rising by 0.7 kWh, from 7.0 kWh to 7.7 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Tri-Cities Airport are 46.265 deg latitude, -119.119 deg longitude, and 404 ft elevation.

The topography within 2 miles of Tri-Cities Airport contains only modest variations in elevation, with a maximum elevation change of 161 feet and an average elevation above sea level of 418 feet. Within 10 miles contains only modest variations in elevation (1,309 feet). Within 50 miles contains very significant variations in elevation (3,658 feet).

The area within 2 miles of Tri-Cities Airport is covered by artificial surfaces (62%), cropland (24%), and shrubs (14%), within 10 miles by cropland (52%) and artificial surfaces (25%), and within 50 miles by cropland (43%) and shrubs (42%).