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Will it freeze in Boulder City in the next 7 nights?
No overnight lows at or below 32°F are forecast in Boulder City during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 49°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 49°F Above 36°F · Mostly Clear
- Fri, Nov 6 51°F Above 36°F · Clear
- Sat, Nov 7 50°F Above 36°F · Clear
- Sun, Nov 8 51°F Above 36°F · Mostly Clear
- Mon, Nov 9 52°F Above 36°F · Partly Cloudy
- Tue, Nov 10 52°F Above 36°F · Mostly Clear
- Wed, Nov 11 52°F Above 36°F · Mostly Clear
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Boulder City
The median first fall hard-freeze date (28°F) is December 30, from NOAA’s 1991–2020 Climate Normals at Alan Bible Visitor Center. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Jan 18 · Feb 13 · Mar 13 | Nov 23 · Dec 5 · Dec 18 | 295 days |
| 32°F freeze | Dec 29 · Jan 21 · Mar 5 | Dec 2 · Dec 17 · Jan 3 | 328 days |
| 28°F hard freeze | Dec 19 · Jan 10 · Mar 3 | Dec 8 · Dec 30 · Feb 3 | 360 days |
Average high temperature by month
1991–2020 normals at Alan Bible Visitor Center
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Boulder City, NV come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Alan Bible Visitor Center (station USC00260125, elevation 1,641 ft), 13 mi from Boulder City. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Boulder City
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Henderson, NV | 13 mi | Jan 20 | Dec 15 |
| North Las Vegas, NV | 32 mi | Feb 1 | Dec 8 |
| Las Vegas, NV | 34 mi | Jan 24 | Dec 10 |
| Bullhead City, AZ | 53 mi | Jan 4 | Dec 23 |
| Kingman, AZ | 66 mi | Apr 2 | Nov 11 |
| Mesquite, NV | 80 mi | Mar 16 | Nov 13 |
| Lake Havasu City, AZ | 99 mi | rare | rare |
| St. George, UT | 113 mi | Mar 14 | Nov 10 |
| Santa Clara, UT | 113 mi | Mar 14 | Nov 10 |
| Ivins, UT | 114 mi | Mar 14 | Nov 10 |
Frequently asked questions
When is the last frost in Boulder City?
On average, the last spring frost (32°F) in Boulder City is around January 21. In about 1 year in 10 it comes after March 5, and in 9 years in 10 it comes after December 29.
When is the first frost in Boulder City?
The first fall frost (32°F) usually arrives around December 17. There’s a 10% chance of a freeze by December 2 and a 90% chance by January 3.
Can it frost in Boulder City after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after February 13.
What growing zone is Boulder City?
Boulder City is in USDA Plant Hardiness Zone 9a (average annual extreme minimum temperature 20 to 25°F), based on the 2023 USDA map for ZIP code 89044. See growing zones in Nevada.
More: all Nevada frost dates · Nevada growing zones · frost vs. freeze