Walnut Creek, California Weather Forecast

Contra Costa County 37.90°N, 122.04°W Pop. 70,166 ZIP: 94596

Walnut Creek is in Contra Costa County, California (pop. 70,166). Below you'll find current conditions, radar, observed precipitation with YTD anomalies, a 7-day forecast, GDD accumulations, and the NWS written forecast.