When is the last frost in Las Vegas, NV?

For ZIP code 89122, the average last spring frost (32°F) is February 1, based on NOAA 1991-2020 climate normals for the N Las Vegas, NV weather station. There is a 1-in-10 chance of a frost after February 24.

When is the first frost in Las Vegas, NV?

The average first fall frost (32°F) is December 8. There is a 1-in-10 chance of frost by November 23, so tender plants are at risk from that point on.

How long is the growing season in 89122?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 311 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 89122Las Vegas, NV

The average last spring frost in Las Vegas is February 1 and the average first fall frost is December 8, giving a typical growing season of about 311 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 1
Average first fall frost: Dec 8
Growing season: 311 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 · Feb 20 · Mar 9	Nov 11 · Nov 26 · Dec 10	278 days	100%
Frost / freeze (32°F)	Jan 2 · Feb 1 · Feb 24	Nov 23 · Dec 8 · Dec 27	311 days	99%
Hard freeze (28°F)	Dec 12 · Jan 4 · Feb 8	Dec 1 · Dec 21 · Jan 24	349 days	73%

Where these dates come from

ZIP code 89122 is matched to the NOAA station N Las Vegas, NV, 13.9 km away, at 1,898 ft elevation (205 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
N Las Vegas, NV (used)	1,898 ft	Feb 1	Dec 8
Las Vegas Mccarran Ap, NV	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

Frost dates near Las Vegas

Las Vegas, NV 89142 · last Feb 1, first Dec 8
Henderson, NV 89014 · 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
Coyote Springs, NV 89037 · last Feb 1, first Dec 8
Nellis Afb, NV 89191 · last Feb 1, first Dec 8
Boulder City, NV 89006 · last Feb 4, first Dec 5
Sloan, NV 89054 · last Feb 4, first Dec 5

Frequently asked questions

When is the last frost in Las Vegas, NV?: For ZIP code 89122, the average last spring frost (32°F) is February 1, based on NOAA 1991-2020 climate normals for the N Las Vegas, NV weather station. There is a 1-in-10 chance of a frost after February 24.
When is the first frost in Las Vegas, NV?: The average first fall frost (32°F) is December 8. There is a 1-in-10 chance of frost by November 23, so tender plants are at risk from that point on.
How long is the growing season in 89122?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 311 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.