When is the last frost in Dinuba, CA?

For ZIP code 93618, 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 Dinuba, 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 93618?

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 93618Dinuba, CA

The average last spring frost in Dinuba 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 93618 is matched to the NOAA station Visalia, CA, 24.4 km away, at 303 ft elevation (25 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
Hanford Muni Ap, CA	249 ft	Feb 20	Nov 23
Hanford 1 S, CA	237 ft	Feb 7	Dec 1
Lemon Cove, CA	513 ft	Feb 5	Dec 8

Frost dates near Dinuba

Sultana, CA 93666 · last Jan 23, first Dec 13
Reedley, CA 93654 · last Jan 30, first Dec 11
Cutler, CA 93615 · last Jan 23, first Dec 13
Orosi, CA 93647 · last Jan 23, first Dec 13
Orange Cove, CA 93646 · last Jan 23, first Dec 13
Traver, CA 93673 · last Feb 20, first Nov 23
Yettem, CA 93670 · last Jan 23, first Dec 13
Kingsburg, CA 93631 · last Feb 20, first Nov 23

Frequently asked questions

When is the last frost in Dinuba, CA?: For ZIP code 93618, 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 Dinuba, 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 93618?: 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.