When is the last frost in Las Vegas, NV?

For ZIP code 89109, the average last spring frost (32°F) is January 20, based on NOAA 1991-2020 climate normals for the Las Vegas Mccarran Ap, NV weather station. There is a 1-in-10 chance of a frost after February 14.

When is the first frost in Las Vegas, NV?

The average first fall frost (32°F) is December 15. 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 89109?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 333 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 89109Las Vegas, NV

The average last spring frost in Las Vegas is January 20 and the average first fall frost is December 15, giving a typical growing season of about 333 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 20
Average first fall frost: Dec 15
Growing season: 333 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 19 · Feb 11 · Mar 4	Nov 18 · Dec 3 · Dec 17	293 days	100%
Frost / freeze (32°F)	Dec 20 · Jan 20 · Feb 14	Nov 28 · Dec 15 · Jan 7	333 days	94%
Hard freeze (28°F)	Dec 10 · Dec 31 · Jan 29	Dec 6 · Dec 26 · Jan 22	365 days	45%

Where these dates come from

ZIP code 89109 is matched to the NOAA station Las Vegas Mccarran Ap, NV, 6.2 km away, at 2,131 ft elevation (113 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Las Vegas Mccarran Ap, NV (used)	2,131 ft	Jan 20	Dec 15
Las Vegas Wfo, NV	2,275 ft	Feb 4	Dec 5
Las Vegas Air Terminal, NV	2,203 ft	Jan 24	Dec 10
N Las Vegas, NV	1,898 ft	Feb 1	Dec 8

Frost dates near Las Vegas

Las Vegas, NV 89169 · last Jan 20, first Dec 15
The Lakes, NV 89163 · last Feb 1, first Dec 8
North Las Vegas, NV 89036 · last Feb 1, first Dec 8
Henderson, NV 89014 · last Jan 20, first Dec 15
Nellis Afb, NV 89191 · last Feb 1, first Dec 8
Coyote Springs, NV 89037 · last Feb 1, first Dec 8
Sloan, NV 89054 · last Feb 4, first Dec 5
Blue Diamond, NV 89004 · last Mar 13, first Nov 15

Frequently asked questions

When is the last frost in Las Vegas, NV?: For ZIP code 89109, the average last spring frost (32°F) is January 20, based on NOAA 1991-2020 climate normals for the Las Vegas Mccarran Ap, NV weather station. There is a 1-in-10 chance of a frost after February 14.
When is the first frost in Las Vegas, NV?: The average first fall frost (32°F) is December 15. 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 89109?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 333 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.