When is the last frost in Rocklin, CA?

For ZIP code 95765, the average last spring frost (32°F) is January 12, based on NOAA 1991-2020 climate normals for the Sacramento 5 Ese, CA weather station. There is a 1-in-10 chance of a frost after February 8.

When is the first frost in Rocklin, CA?

The average first fall frost (32°F) is December 16. There is a 1-in-10 chance of frost by November 28, so tender plants are at risk from that point on.

How long is the growing season in 95765?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 341 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 95765Rocklin, CA

The average last spring frost in Rocklin is January 12 and the average first fall frost is December 16, giving a typical growing season of about 341 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 12
Average first fall frost: Dec 16
Growing season: 341 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 9 · Feb 12 · Mar 11	Nov 15 · Dec 1 · Dec 29	289 days	99%
Frost / freeze (32°F)	Dec 18 · Jan 12 · Feb 8	Nov 28 · Dec 16 · Jan 14	341 days	81%
Hard freeze (28°F)	Dec 13 · Dec 31 · Jan 22	Dec 5 · Dec 25 · Jan 14	365 days	25%

Where these dates come from

ZIP code 95765 is matched to the NOAA station Sacramento 5 Ese, CA, 31.5 km away, at 38 ft elevation (119 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Sacramento 5 Ese, CA (used)	38 ft	Jan 12	Dec 16
Auburn, CA	1,292 ft	Feb 25	Dec 5
Sacramento Metro Ap, CA	23 ft	Feb 22	Nov 24
Sacramento Executive Ap, CA	15 ft	Feb 2	Dec 2

Frost dates near Rocklin

Rocklin, CA 95677 · last Jan 12, first Dec 16
Roseville, CA 95678 · last Jan 12, first Dec 16
Loomis, CA 95650 · last Feb 25, first Dec 5
Penryn, CA 95663 · last Feb 25, first Dec 5
Lincoln, CA 95648 · last Feb 11, first Nov 30
Granite Bay, CA 95746 · last Jan 12, first Dec 16
Citrus Heights, CA 95611 · last Jan 12, first Dec 16
Newcastle, CA 95658 · last Feb 25, first Dec 5

Frequently asked questions

When is the last frost in Rocklin, CA?: For ZIP code 95765, the average last spring frost (32°F) is January 12, based on NOAA 1991-2020 climate normals for the Sacramento 5 Ese, CA weather station. There is a 1-in-10 chance of a frost after February 8.
When is the first frost in Rocklin, CA?: The average first fall frost (32°F) is December 16. There is a 1-in-10 chance of frost by November 28, so tender plants are at risk from that point on.
How long is the growing season in 95765?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 341 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.