When is the last frost in Bullhead City, AZ?

For ZIP code 86430, the average last spring frost (32°F) is January 5, based on NOAA 1991-2020 climate normals for the Laughlin, NV weather station. There is a 1-in-10 chance of a frost after February 13.

When is the first frost in Bullhead City, AZ?

The average first fall frost (32°F) is December 24. There is a 1-in-10 chance of frost by December 3, so tender plants are at risk from that point on.

How long is the growing season in 86430?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 354 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 86430Bullhead City, AZ

The average last spring frost in Bullhead City is January 5 and the average first fall frost is December 24, giving a typical growing season of about 354 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 5
Average first fall frost: Dec 24
Growing season: 354 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)	Dec 31 · Feb 2 · Mar 3	Nov 24 · Dec 13 · Jan 5	311 days	98%
Frost / freeze (32°F)	Dec 11 · Jan 5 · Feb 13	Dec 3 · Dec 24 · Feb 1	354 days	61%
Hard freeze (28°F)	Dec 11 · Jan 1 · Feb 10	Dec 10 · Dec 31 · Feb 10	365 days	15%

Where these dates come from

ZIP code 86430 is matched to the NOAA station Laughlin, NV, 4.2 km away, at 605 ft elevation (245 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Laughlin, NV (used)	605 ft	Jan 5	Dec 24
Bullhead City, AZ	531 ft	Jan 4	Dec 23
Needles Ap, CA	890 ft	Jan 6	Jan 2
Yucca 1 Nne, AZ	1,950 ft	Feb 18	Dec 2

Frost dates near Bullhead City

Bullhead City, AZ 86439 · last Jan 4, first Dec 23
Laughlin, NV 89029 · last Jan 5, first Dec 24
Fort Mohave, AZ 86426 · last Jan 5, first Dec 24
Oatman, AZ 86433 · last Feb 18, first Dec 2
Mohave Valley, AZ 86440 · last Jan 4, first Dec 23
Cal Nev Ari, NV 89039 · last Mar 7, first Nov 29
Golden Valley, AZ 86413 · last Apr 2, first Nov 11
Temple Bar Marina, AZ 86443 · last Apr 2, first Nov 11

Frequently asked questions

When is the last frost in Bullhead City, AZ?: For ZIP code 86430, the average last spring frost (32°F) is January 5, based on NOAA 1991-2020 climate normals for the Laughlin, NV weather station. There is a 1-in-10 chance of a frost after February 13.
When is the first frost in Bullhead City, AZ?: The average first fall frost (32°F) is December 24. There is a 1-in-10 chance of frost by December 3, so tender plants are at risk from that point on.
How long is the growing season in 86430?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 354 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.