When is the last frost in Orosi, CA?

For ZIP code 93647, the average last spring frost (32°F) is January 23, based on NOAA 1991-2020 climate normals for the Visalia, CA weather station. There is a 1-in-10 chance of a frost after February 27.

When is the first frost in Orosi, CA?

The average first fall frost (32°F) is December 13. There is a 1-in-10 chance of frost by November 27, so tender plants are at risk from that point on.

How long is the growing season in 93647?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 328 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 93647Orosi, CA

The average last spring frost in Orosi is January 23 and the average first fall frost is December 13, giving a typical growing season of about 328 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 23
Average first fall frost: Dec 13
Growing season: 328 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 26 · Feb 27 · Apr 2	Nov 15 · Nov 29 · Dec 16	274 days	100%
Frost / freeze (32°F)	Dec 29 · Jan 23 · Feb 27	Nov 27 · Dec 13 · Jan 8	328 days	93%
Hard freeze (28°F)	Dec 16 · Jan 2 · Jan 24	Dec 9 · Dec 25 · Jan 12	364 days	51%

Where these dates come from

ZIP code 93647 is matched to the NOAA station Visalia, CA, 24.3 km away, at 303 ft elevation (74 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Visalia, CA (used)	303 ft	Jan 23	Dec 13
Lemon Cove, CA	513 ft	Feb 5	Dec 8
Grant Grove, CA	6,580 ft	Jun 1	Oct 7
Three Rivers Edison Ph 1, CA	1,140 ft	Mar 16	Nov 26

Frost dates near Orosi

Cutler, CA 93615 · last Jan 23, first Dec 13
Sultana, CA 93666 · last Jan 23, first Dec 13
Yettem, CA 93670 · last Jan 23, first Dec 13
Orange Cove, CA 93646 · last Jan 23, first Dec 13
Dinuba, CA 93618 · last Jan 23, first Dec 13
Reedley, CA 93654 · last Jan 30, first Dec 11
Ivanhoe, CA 93235 · last Jan 23, first Dec 13
Yokuts, CA 93675 · last Feb 23, first Dec 12

Frequently asked questions

When is the last frost in Orosi, CA?: For ZIP code 93647, the average last spring frost (32°F) is January 23, based on NOAA 1991-2020 climate normals for the Visalia, CA weather station. There is a 1-in-10 chance of a frost after February 27.
When is the first frost in Orosi, CA?: The average first fall frost (32°F) is December 13. There is a 1-in-10 chance of frost by November 27, so tender plants are at risk from that point on.
How long is the growing season in 93647?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 328 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.