Sheridan, OR 97378 Frost Dates
Sheridan, OR: when does the frost end?
Around 04/16 is the usual last spring frost, about 231 days away. Fall's first freeze usually shows up around 11/01, roughly 199 days after the last spring frost.
Sheridan sits in USDA Zone 8b (15 to 20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 9 weeks until Sheridan's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Sheridan against the rest of the dataset
About 199 days separate Sheridan's last and first frost, putting it 18,088 of 40,283 ZIP codes nationally. Within OR, it ranks 236 of 463.
Learn more
Before leaning on 97378's figures: the frost range explains how to read the range around Sheridan's dates instead of trusting one, while local microclimates explains what one yard in Sheridan can differ from the 97378 normal.