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Frost Dates in Nevada
First and last frost dates across Nevada, computed from 68 NOAA weather stations (1991–2020 climate normals). Your exact date depends on your city and microclimate — use the ZIP lookup on the main tool for a station-specific answer.
Last spring frost
May 12
statewide median · range Jan 20–Jun 16
First fall frost
Oct 6
statewide median · range Sep 11–Dec 15
Growing season
145 days
median · range 86–333
Stations used
68
NOAA 1991–2020 normals
Frost dates by city
Median dates from the nearest NOAA station to each city. The "cautious" date is the 10% spring value — planting after it means only a ~10% chance of a later frost.
| City | Nearest station | Last spring frost | First fall frost | Growing season | Safe transplant |
|---|---|---|---|---|---|
| Las Vegas | N Las Vegas · 4 mi | Feb 1 (cautious: Feb 24) | Dec 8 | 311 days | Feb 15 |
| Reno | Reno Ap · 3 mi | Apr 20 (cautious: May 5) | Oct 23 | 184 days | May 4 |
| Henderson | Mccarran Intl Ap · 10 mi | Jan 20 (cautious: Feb 14) | Dec 15 | 333 days | Feb 3 |
How frost varies across Nevada
Spring frost timing spans about 147 days across the state. Mccarran in southeastern Nevada typically sees its last spring frost around January 20, while Jiggs in northeastern Nevada doesn't clear frost until about June 16. Within any city, low spots and valleys run colder than the station average; areas near buildings and pavement run warmer.
When to plant in Nevada
As a rule of thumb, cool-season crops (lettuce, peas, spinach) can go in 2–4 weeks before your last spring frost; warm-season transplants (tomatoes, peppers) should wait about 2 weeks after it — around May 26 for the statewide median. Check your city's row above rather than the statewide median: a 147-day statewide spread makes the city-level date the one that matters.
These are climate normals (what's typical), not forecasts. For the current year, watch the 10-day forecast around your planting date.
How this is computed
Statewide medians are the median of the 68 NOAA stations' median frost dates — half the stations run earlier, half later. City rows use the nearest station with 30-year freeze records. Dates are 32°F freeze probabilities from NOAA NCEI 1991–2020 U.S. Climate Normals; nothing is estimated or interpolated.
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Frequently asked questions
When is the last frost date in Nevada?
The statewide median last spring frost is May 12, but it ranges from January 20 to June 16 depending on where in the state you are. Use your city's row in the table above, or the ZIP lookup on the main tool, for a station-specific date.
When can I plant tomatoes outside in Nevada?
Warm-season transplants like tomatoes should wait about two weeks after your last spring frost — around May 26 for the statewide median. Your city may differ by weeks; check the "safe transplant" column in the city table.
How long is the growing season in Nevada?
The median growing season across 68 NOAA stations is 145 days, ranging from 86 to 333 days by location.
Why do frost dates vary so much within Nevada?
Frost timing follows latitude, elevation, and local terrain. Across Nevada, last spring frost dates span about 147 days — from around January 20 near Mccarran to June 16 near Jiggs. Microclimates (low spots, valleys, urban heat) shift dates further at the garden level.
Where does this data come from?
All frost dates are computed from the NOAA National Centers for Environmental Information 1991–2020 U.S. Climate Normals freeze data (public domain), using each station's 32°F freeze probability statistics. No dates are estimated or interpolated.