These dates have been calculated using data provided by the NOAA National Centers for Environmental Information.

Using a 30% probability threshold, means there’s about a 3 in 10 chance frost will occur before or after the given date. In general, it should be safe to plant after this date. Tender and warm-weather plants may need to be planted later when the soil is warmer (think tomatoes). Because micro-climates vary—your backyard might be warmer or cooler than nearby towns—use these dates as a flexible guide, not a guarantee.

Location	Climate Station	Last Spring Frost	First Fall Frost	Growing Season
Depoe Bay	NEWPORT 3N	Mar-28	Nov-26	242 days
Eddyville	ALSEA FH (FALL CREEK)	Apr-23	Oct-24	183 days
Harlan	ALSEA FH (FALL CREEK)	Apr-23	Oct-24	183 days
Lincoln City	OTIS 2 NE	Apr-18	Nov-8	203 days
Logsden	NEWPORT 3N	Mar-28	Nov-26	242 days
Neskowin	OTIS 2 NE	Apr-18	Nov-8	203 days
Newport & South Beach	NEWPORT	Apr-1	Nov-15	227 days
Otis	OTIS 2 NE	Apr-18	Nov-8	203 days
Otter Rock	NEWPORT 3N	Mar-28	Nov-26	242 days
Seal Rock	NEWPORT 1 SE	Feb-28	Dec-4	278 days
Siletz	NEWPORT 3N	Mar-28	Nov-26	242 days
Tidewater	ALSEA FH (FALL CREEK)	Apr-23	Oct-24	183 days
Toledo	NEWPORT 1 SE	Feb-28	Dec-4	278 days
Waldport	YACHATS, OR	Mar-2	Dec-1	273 days
Yachats	YACHATS, OR	Mar-2	Dec-1	273 days

Featured Image by Alfons Landsmann from Pixabay.