When is the last frost in Brookings, OR?

For ZIP code 97415, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Brookings, OR weather station. There is a 1-in-10 chance of a frost after March 21.

When is the first frost in Brookings, OR?

The average first fall frost (32°F) is December 27. There is a 1-in-10 chance of frost by November 26, so tender plants are at risk from that point on.

How long is the growing season in 97415?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 349 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 97415Brookings, OR

The average last spring frost in Brookings is January 31 and the average first fall frost is December 27, giving a typical growing season of about 349 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 31
Average first fall frost: Dec 27
Growing season: 349 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)	Jan 31 · Mar 23 · Apr 26	Nov 14 · Dec 7 · Jan 30	259 days	99%
Frost / freeze (32°F)	Dec 9 · Jan 31 · Mar 21	Nov 26 · Dec 27 · Feb 27	349 days	61%
Hard freeze (28°F)	Dec 8 · Jan 3 · Feb 16	Dec 1 · Dec 30 · Feb 14	365 days	14%

Where these dates come from

ZIP code 97415 is matched to the NOAA station Brookings, OR, 0.8 km away, at 82 ft elevation (52 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Brookings, OR (used)	82 ft	Jan 31	Dec 27
Brookings 2 Se, OR	50 ft	Jan 31	Dec 27
Crescent City 3 Nnw, CA	43 ft	Mar 11	Nov 23
Crescent City Mcnamara Ap, CA	56 ft	Jan 30	Dec 25

Frost dates near Brookings

Smith River, CA 95567 · last Jan 31, first Dec 27
Fort Dick, CA 95538 · last Mar 11, first Nov 23
Crescent City, CA 95531 · last Mar 11, first Nov 23
Gasquet, CA 95543 · last May 1, first Oct 12
Gold Beach, OR 97444 · last Feb 16, first Dec 16
O Brien, OR 97534 · last May 1, first Oct 12
Kerby, OR 97531 · last May 1, first Oct 12
Cave Junction, OR 97523 · last May 1, first Oct 12

Frequently asked questions

When is the last frost in Brookings, OR?: For ZIP code 97415, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Brookings, OR weather station. There is a 1-in-10 chance of a frost after March 21.
When is the first frost in Brookings, OR?: The average first fall frost (32°F) is December 27. There is a 1-in-10 chance of frost by November 26, so tender plants are at risk from that point on.
How long is the growing season in 97415?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 349 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.