Nevada frost dates

Last spring frostApril 20
First fall frostOctober 10
Frost-free days173

Across Nevada, the average last spring frost is around April 20 and the average first fall frost around October 10 - roughly 173 frost-free days. USDA zones 4b, 5b, 6b, 7a, 8a, 9a, 10a.

Risk you acceptLast spring frost byFirst fall frost by
Cautious (~10%)May 4September 26
Average (~50%)April 20October 10
Gambler (~90%)April 6October 24

Nevada spans a wide range of elevations and climates - your town’s dates can differ from the state average by two weeks or more. Look up your exact ZIP.

What these dates mean for planting in Nevada

Counted from the average frost dates above. For every crop, see the full Nevada planting calendar.

Frost dates by zone in Nevada

Nevada spans USDA zones 4b, 5b, 6b, 7a, 8a, 9a, 10a. Colder zones - usually higher or further inland - have later spring and earlier fall frosts than the state average.

ZoneTypical last frostTypical first frostSeason
Zone 4May 10September 25135 days
Zone 5April 30October 5160 days
Zone 6April 15October 15185 days
Zone 7April 5October 25200 days
Zone 8March 20November 5230 days
Zone 9February 20November 30280 days
Zone 10January 30December 15330 days

Frost dates in nearby states

StateLast frostFirst frost
MontanaMay 15September 15
IdahoMay 10September 25
WyomingMay 20September 15
ColoradoMay 5October 1
UtahMay 5October 5

Questions gardeners ask

When is the last frost in Nevada?

The statewide average last spring frost is around April 20. There is still roughly a one-in-two chance of frost on that date, so for tender plants a safer date is about two weeks later, around May 4. Nevada covers a wide range of elevations and climates, so check your own ZIP code.

When is the first frost in Nevada?

The average first fall frost is around October 10. Frost-tender crops such as tomatoes, peppers, beans and squash should be harvested or covered before then; an early frost two weeks sooner, around September 26, happens in roughly one year in ten.

How long is the growing season in Nevada?

About 173 frost-free days on average between the last spring frost and the first fall frost. That is enough for most vegetables, including a fall crop of greens and roots.

When can I plant tomatoes outside in Nevada?

Plant tomato transplants outdoors between April 20 – May 7, once nights stay above about 50°F. Start seeds indoors six to eight weeks earlier.

Is it safe to plant on the average last frost date?

For hardy crops such as peas, spinach, onions and cabbage, yes - they handle a light frost. For tender crops, no: the average date still carries about a 50% chance of a later frost, so wait one to two weeks or keep row cover ready.

→ Turn these into sowing dates with the Nevada planting calendar, look up an exact ZIP code, or read how frost dates work. Month by month: what to plant in January · what to plant in February · what to plant in March · what to plant in April · what to plant in May · what to plant in June · what to plant in July · what to plant in August · what to plant in September · what to plant in October · what to plant in November.

Statewide average from NOAA/NCEI freeze normals. Cautious and gambler dates are about two weeks either side of the average.