USDA Hardiness Zone 9a
Frost Dates for 92365 — Newberry Springs, California
NOAA 1991–2020 normals from Barstow Daggett Airport, CA (1,917 ft), 9 miles west.
Updated
In Newberry Springs, the last spring frost (32°F) is around February 19 in half of years and has passed by March 11 in nine years out of ten. The first fall frost comes around November 26, as early as November 10 one year in ten, leaving a typical freeze-free season of 279 days (NOAA, Barstow Daggett Airport, CA).
- Last spring frost
- February 19
- First fall frost
- November 26
- Growing season
- 279 days
- Hardiness zone
- 9a
50% probability
50% probability
freeze-free, 50%
20 to 25°F (-6.7 to -3.9°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 5%
- Snow per year
- 0.2"
median, 1991–2020
median, 1991–2020
1 of 21 observed
NOAA normal
Frost risk by date in Newberry Springs
Half of springs at Barstow Daggett Airport, CA see their last 32°F night by February 19; only one in ten is past it by January 23, and one in ten still has one after March 11. Planting tender crops after February 28 leaves a 30% risk of a frost on them, after March 4 20%, and after March 11 10%. The 20 days between the even-odds date and the one-in-ten date is narrower than at 88% of the 220 California stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 26 in half of years, as early as November 10 one year in ten, and holds off past December 11 one year in ten. A hard freeze of 28°F follows 13 days later, around December 9; in spring the one-in-ten date for 28°F is February 25, 14 days before the 32°F one. The freeze-free season lasts 279 days in a typical year, longer than at 50% of the 219 California stations; it reaches 309 days one year in ten and falls short of 252 one year in ten. On average 24 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 20 days longer, to about March 11, and return around November 16. Nights of 24°F, cold enough to damage hardier plants, come in 68% of winters and 16°F in 2%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Feb 18 | Feb 26 | Mar 2 | Mar 7 | Mar 11 | Mar 16 | Mar 21 | Mar 28 | Apr 6 |
| 32°F | Jan 23 | Feb 1 | Feb 7 | Feb 13 | Feb 19 | Feb 24 | Feb 28 | Mar 4 | Mar 11 |
| 28°F98% of yrs | Dec 29 | Jan 5 | Jan 13 | Jan 19 | Jan 28 | Feb 2 | Feb 7 | Feb 15 | Feb 25 |
| 24°F68% of yrs | Dec 12 | Dec 22 | Dec 28 | Jan 1 | Jan 7 | Jan 12 | Jan 20 | Jan 29 | Feb 6 |
| 20°F20% of yrs | too rare for a date | ||||||||
| 16°F2% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 31 | Nov 5 | Nov 9 | Nov 12 | Nov 16 | Nov 18 | Nov 21 | Nov 24 | Nov 29 |
| 32°F | Nov 10 | Nov 16 | Nov 20 | Nov 23 | Nov 26 | Nov 30 | Dec 3 | Dec 6 | Dec 11 |
| 28°F98% of yrs | Nov 22 | Nov 27 | Dec 1 | Dec 6 | Dec 9 | Dec 12 | Dec 16 | Dec 21 | Jan 1 |
| 24°F68% of yrs | Dec 1 | Dec 8 | Dec 12 | Dec 18 | Dec 22 | Dec 27 | Jan 1 | Jan 6 | Jan 21 |
| 20°F20% of yrs | too rare for a date | ||||||||
| 16°F2% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Barstow Daggett Airport, CA, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 92365 →Compare Newberry Springs with another place →
Weather by month in Newberry Springs
July is the warmest month at Barstow Daggett Airport, CA, averaging 105°F by day and 74°F at night; December is the coldest at 60°F and 35°F. A freezing night is all but certain in every month from December to January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 75% of years and March still brings one in 26% of years.
Warmth for growing adds up to 6,868 growing degree days a year (base 50°F), more than at 96% of the 283 California stations. 39% of them (2,684) have built up by the end of June, and July adds the most, 1,228. Precipitation totals 3.8 inches a year, most in February (0.7") and least in June (0.0"); May to September bring 21% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 61 | 36 | 0.6 | 96% | 7 | 52 |
| Feb | 66 | 40 | 0.7 | 75% | 3 | 119 |
| Mar | 73 | 46 | 0.4 | 26% | 1 | 290 |
| Apr | 80 | 51 | 0.2 | 2% | 0 | 463 |
| May | 89 | 60 | 0.1 | 0% | 0 | 750 |
| Jun | 99 | 68 | 0.0 | 0% | 0 | 1010 |
| Jul | 105 | 74 | 0.3 | 0% | 0 | 1228 |
| Aug | 104 | 73 | 0.2 | 0% | 0 | 1194 |
| Sep | 96 | 66 | 0.2 | 0% | 0 | 935 |
| Oct | 83 | 54 | 0.2 | 2% | 0 | 583 |
| Nov | 70 | 43 | 0.3 | 61% | 3 | 208 |
| Dec | 60 | 35 | 0.6 | 99% | 11 | 39 |
Monthly normals 1991–2020 at Barstow Daggett Airport, CA (1,917 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Barstow, CA, 22 miles west of Newberry Springs and 303 feet higher, has a last frost 3 days later (February 22), a first frost 3 days earlier (November 23), a season 8 days shorter.
When it snows in Newberry Springs, California
Measurable snow is rare here: only 1 of 21 winters from 1991 to 2020 recorded 0.1 inch or more at Barstow Daggett Airport, CA, 9 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 92365
| When | What to do |
|---|---|
| December 11 – December 25 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| December 25 – January 8 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| January 22 – February 5 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| February 19 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by September 3 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by November 12 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 26 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 92365 is 9 miles from Barstow Daggett Airport, CA, which stands at 1,917 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 92365 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.
Frost dates across California →
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.