Tri-Cities weather
Loading live data…Latest for Tri-Cities: NWS (National Blend (NBM)): 62° Clear · American (NOAA GFS): 61° Clear · European (ECMWF): 62° Clear.
The weather map: all three models at once
NWS, American, European side by side around Tri-Cities and nearby towns.Live rain radar →Next 14 hours
consensus of the three models7-day forecast
where the models agree, and where they splitTri-Cities, WA is at its warmest in Jul (average highs near 98°F) and coldest in Jan (lows around 28°F), with roughly 10 in of precipitation across the year. Below, compare what NWS, American, European forecast for Tri-Cities right now, and see exactly where they disagree.
Tri-Cities climate by month
average daytime high and overnight low across a typical yearWhich forecast is most accurate in the US?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.
Common questions
What's the weather in Tri-Cities today?
Will it rain in Tri-Cities today or tomorrow?
Which forecast is most accurate for Tri-Cities?
What is the warmest month in Tri-Cities?
How cold does Tri-Cities get?
How much rain does Tri-Cities get?
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.