Weather in Tri-Cities in October
How warm is it in Tri-Cities in October?
In October the typical daytime high in Tri-Cities is 16.3 °C on average, from 21.0 °C at the start to 11.5 °C at the end of the month.
That is 7.8 °C cooler than in September and 8.7 °C warmer than in November.
The last 10 years were 0.4 °C cooler than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Spokane Intl Ap (199 km) and Payette (299 km); nearer ones count more.