Climate averages 1991–2020
Tri-Cities weather
in June.
A hot, very dry month: the 3rd warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
June is a hot month in Tri-Cities: daytime highs average 28.9°C and nights cool to about 15.3°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 13 mm of rain on roughly 3 days, which makes June a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 43 min on an average June day.
The nearest other city in this atlas is Kennewick (6 km away). In June its highs average 28.8°C, about as warm as Tri-Cities, with 13 mm of rain.
Among the 498 cities listed in the United States, Tri-Cities ranks joint 196th of 498 for the warmest June highs and joint 127th of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; Tri-Cities is 1.0°C warmer than that mean.
From June to July, average highs rise by 5.3°C to 34.2°C, and monthly rainfall falls from 13 mm to 3.8 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tri-Cities climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.0°C-1.5°C | -1.5°C | 34 | 8.1 | 9.19 h |
| February | 9.3°C-0.3°C | -0.3°C | 23 | 6.2 | 10.310 h |
| March | 14.3°C2.8°C | 2.8°C | 24 | 5.9 | 11.912 h |
| April | 19.3°C6.6°C | 6.6°C | 17 | 4.9 | 13.514 h |
| May | 25.0°C11.5°C | 11.5°C | 18 | 4.5 | 15.015 h |
| June, selected | 28.9°C15.3°C | 15.3°C | 13 | 2.8 | 15.716 h |
| July | 34.2°C19.2°C | 19.2°C | 3.8 | 1.0 | 15.415 h |
| August | 33.2°C18.6°C | 18.6°C | 4.2 | 1.0 | 14.214 h |
| September | 27.5°C14.0°C | 14.0°C | 6.9 | 1.8 | 12.613 h |
| October | 18.9°C7.9°C | 7.9°C | 22 | 5.0 | 11.011 h |
| November | 10.7°C2.3°C | 2.3°C | 29 | 7.3 | 9.59 h |
| December | 5.6°C-1.2°C | -1.2°C | 35 | 8.4 | 8.79 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Kennewick in JuneUnited States · 6 kmHigh 28.8°C · Low 15.2°C · 13 mm rain
- Yakima in JuneUnited States · 108 kmHigh 25.6°C · Low 11.6°C · 9.5 mm rain
- Spokane in JuneUnited States · 207 kmHigh 23.8°C · Low 11.6°C · 33 mm rain
- Spokane Valley in JuneUnited States · 217 kmHigh 23.0°C · Low 10.9°C · 37 mm rain
- Auburn in JuneUnited States · 259 kmHigh 19.7°C · Low 10.9°C · 58 mm rain
- Kent in JuneUnited States · 263 kmHigh 20.0°C · Low 11.3°C · 59 mm rain
- Gresham in JuneUnited States · 264 kmHigh 20.5°C · Low 10.6°C · 58 mm rain
- Federal Way in JuneUnited States · 266 kmHigh 19.2°C · Low 10.6°C · 58 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tri-Cities) is explained once on the Tri-Cities year overview and on the Sources, method and limits page.
Kennewick lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.