News | Washington State Climate Office

Nov 7, 2025 | Climate Matters, Climate Review, Drought and Soil Conditions, November 2025 Newsletter, Rain and Snow, Temperature

Climate Matters: Water Year 2025 in Review

Water year 2025 is complete, and it’s time to take a look back and see how WA stacked up historically. The 2025 water year includes the 12 months from October 1, 2024 through September 30, 2025, as opposed to the usual calendar year.

Nov 7, 2025 | Climate Outlook, November 2025 Newsletter

Early November Climate Outlook

A La Niña advisory is in place meaning that La Niña conditions are present in the tropical Pacific Ocean. This year’s La Niña is on track to be a fairly weak event, in line with forecasts made earlier in the season, and will likely return to neutral conditions by the January-March period (56% chance).

Nov 7, 2025 | Climate Summary, November 2025 Newsletter

October 2025 Climate Summary

Statewide, October temperatures were near normal (-0.6°F below 1991-2020 normals) and precipitation totals were 109% of normal. Temperatures were 2-4°F below normal across the Cascades and 1-3°F below normal across much of eastern Washington and the Olympic Mountains.

Nov 7, 2025 | Drought and Streamflow Update, November 2025 Newsletter

October 2025 Drought and Streamflow Update

On October 6, following near-record warm and dry conditions and three years of declared drought in the Yakima Basin, the Department of Ecology issued a complete halt of surface water use in the Yakima Basin.

Nov 7, 2025 | Notable Weather Events, November 2025 Newsletter

October Notable Weather Events

The month kicked off with a decent rain event across western Washington followed quickly by a late-season warm spell from October 6-10. This warm spell brought what were very likely the last 70°F days of the year for most, if not all, locations across the state.