Frost dates for 89005 — Boulder City, NV
Frost is light and occasional here — typically a few cold nights around midwinter (about 5 a year). Cover tender plants when frost is forecast.
How Boulder City compares
- In a typical year, frost nights in Boulder City fall between December 17 and January 21. In 1 year in 10 the first frost comes as early as December 2, or the last frost as late as March 5.
- Compared with Henderson, NV, 17 km away, the last frost here is 1 day later than there.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 29 |
| 50% (median) | January 21 |
| 10% (safe for tender plants) | March 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | December 2 |
| 50% (median) | December 17 |
| 90% (late) | January 3 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Gardening where frost is rare
Boulder City, NV only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
About these dates
Based on 1991–2020 NOAA climate normals for the Alan Bible Visitor Ctr, NV weather station, 5 km away (elevation 1,640 ft (500 m)).
ZIP codes in Boulder City: 89005 89006
Frost dates near Boulder City
- The Lakes (Clark) Jan 21 · Dec 17
- Henderson Jan 20 · Dec 15
- Coyote Springs Feb 1 · Dec 8
- Sloan Feb 4 · Dec 5
- Nellis Afb Feb 1 · Dec 8
- The Lakes (Clark) Jan 24 · Dec 10
- Las Vegas Jan 24 · Dec 10
- The Lakes Jan 31 · Dec 11
Frequently asked questions
When is the last frost in Boulder City, NV?
The median last spring frost in Boulder City, NV is January 21. There is still about a 10% chance of frost after March 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Boulder City, NV?
The median first fall frost is December 17, with about a 10% chance of frost before December 2.
How long is the growing season in Boulder City, NV?
About 330 days between the median last spring frost and first fall frost.
What planting zone is Boulder City, NV?
Boulder City, NV is in USDA hardiness zone 9b.