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Will it freeze in Barstow in the next 7 nights?
No overnight lows at or below 32°F are forecast in Barstow during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 46°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 46°F Above 36°F · Mostly Clear
- Fri, Nov 6 48°F Above 36°F · Clear
- Sat, Nov 7 49°F Above 36°F · Clear
- Sun, Nov 8 50°F Above 36°F · Mostly Clear
- Mon, Nov 9 51°F Above 36°F · Partly Cloudy
- Tue, Nov 10 50°F Above 36°F · Mostly Clear
- Wed, Nov 11 49°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 Barstow
The median first fall hard-freeze date (28°F) is December 6, from NOAA’s 1991–2020 Climate Normals at Barstow. 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 | Feb 24 · Mar 17 · Apr 14 | Oct 31 · Nov 12 · Nov 26 | 237 days |
| 32°F freeze | Jan 29 · Feb 22 · Mar 24 | Nov 9 · Nov 23 · Dec 8 | 271 days |
| 28°F hard freeze | Jan 2 · Jan 30 · Feb 25 | Nov 18 · Dec 6 · Dec 28 | 310 days |
Average high temperature by month
1991–2020 normals at Barstow
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 Barstow, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Barstow (station USC00040521, elevation 2,220 ft), 2.2 mi from Barstow. 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 Barstow
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Apple Valley, CA | 25 mi | Mar 18 | Nov 11 |
| Victorville, CA | 29 mi | Mar 18 | Nov 11 |
| Adelanto, CA | 30 mi | Mar 18 | Nov 11 |
| Hesperia, CA | 36 mi | Feb 28 | Dec 1 |
| Big Bear Lake, CA | 44 mi | May 27 | Oct 4 |
| California City, CA | 50 mi | Mar 15 | Nov 17 |
| San Bernardino, CA | 52 mi | Jan 27 | Dec 19 |
| Highland, CA | 53 mi | Jan 27 | Dec 19 |
| Rialto, CA | 55 mi | rare | rare |
| Redlands, CA | 57 mi | Jan 27 | Dec 19 |
Frequently asked questions
When is the last frost in Barstow?
On average, the last spring frost (32°F) in Barstow is around February 22. In about 1 year in 10 it comes after March 24, and in 9 years in 10 it comes after January 29.
When is the first frost in Barstow?
The first fall frost (32°F) usually arrives around November 23. There’s a 10% chance of a freeze by November 9 and a 90% chance by December 8.
Can it frost in Barstow 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 March 17.
What growing zone is Barstow?
Barstow 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 92311. See growing zones in California.
More: all California frost dates · California growing zones · frost vs. freeze