When is the last frost in Ophir, OR?

For ZIP code 97464, the average last spring frost (32°F) is February 16, based on NOAA 1991-2020 climate normals for the Gold Beach Rs, OR weather station. There is a 1-in-10 chance of a frost after March 25.

When is the first frost in Ophir, OR?

The average first fall frost (32°F) is December 16. There is a 1-in-10 chance of frost by November 23, so tender plants are at risk from that point on.

How long is the growing season in 97464?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 314 days long.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 97464Ophir, OR

The average last spring frost in Ophir is February 16 and the average first fall frost is December 16, giving a typical growing season of about 314 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 16
Average first fall frost: Dec 16
Growing season: 314 days

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	Feb 22 · Mar 29 · Apr 22	Nov 3 · Nov 24 · Dec 16	242 days	100%
Frost / freeze (32°F)	Dec 16 · Feb 16 · Mar 25	Nov 23 · Dec 16 · Feb 16	314 days	89%
Hard freeze (28°F)	Dec 7 · Jan 2 · Mar 4	Dec 4 · Dec 29 · Feb 28	365 days	24%

Where these dates come from

ZIP code 97464 is matched to the NOAA station Gold Beach Rs, OR, 18.1 km away, at 50 ft elevation (20 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Gold Beach Rs, OR (used)	50 ft	Feb 16	Dec 16
Port Orford #2, OR	42 ft	Feb 17	Dec 3
Illahe, OR	348 ft	Mar 30	Nov 17
Langlois #2, OR	90 ft	Mar 16	Nov 29

Frost dates near Ophir

Wedderburn, OR 97491 · last Feb 17, first Dec 3
Gold Beach, OR 97444 · last Feb 16, first Dec 16
Port Orford, OR 97465 · last Feb 17, first Dec 3
Agness, OR 97406 · last Mar 30, first Nov 17
Sixes, OR 97476 · last Mar 16, first Nov 29
Langlois, OR 97450 · last Mar 16, first Nov 29
Powers, OR 97466 · last Mar 21, first Nov 14
Broadbent, OR 97414 · last Mar 21, first Nov 14

Frequently asked questions

When is the last frost in Ophir, OR?: For ZIP code 97464, the average last spring frost (32°F) is February 16, based on NOAA 1991-2020 climate normals for the Gold Beach Rs, OR weather station. There is a 1-in-10 chance of a frost after March 25.
When is the first frost in Ophir, OR?: The average first fall frost (32°F) is December 16. There is a 1-in-10 chance of frost by November 23, so tender plants are at risk from that point on.
How long is the growing season in 97464?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 314 days long.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.