USDA Hardiness Zone 7b
Frost Dates for 93225 — Frazier Park, California
NOAA 1991–2020 normals from Sandberg, CA (4,510 ft), 17 miles east.
Updated
In Frazier Park, the last spring frost (32°F) is around April 15 in half of years and has passed by May 9 in nine years out of ten. The first fall frost comes around November 26, as early as November 1 one year in ten, leaving a typical freeze-free season of 224 days (NOAA, Sandberg, CA).
- Last spring frost
- April 15
- First fall frost
- November 26
- Growing season
- 224 days
- Hardiness zone
- 7b
50% probability
50% probability
freeze-free, 50%
5 to 10°F (-15.0 to -12.2°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 35%
- Snow per year
- 3"
median, 1991–2020
median, 1991–2020
7 of 20 observed
NOAA normal
Frost risk by date in Frazier Park
Half of springs at Sandberg, CA see their last 32°F night by April 15; only one in ten is past it by March 9, and one in ten still has one after May 9. Planting tender crops after April 26 leaves a 30% risk of a frost on them, after May 1 20%, and after May 9 10%. The 24 days between the even-odds date and the one-in-ten date is narrower than at 74% of the 220 California stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.
In fall the first 32°F night comes by November 26 in half of years, as early as November 1 one year in ten, and holds off past December 16 one year in ten. A hard freeze of 28°F follows 16 days later, around December 12; in spring the one-in-ten date for 28°F is April 17, 22 days before the 32°F one. The freeze-free season lasts 224 days in a typical year, shorter than at 74% of the 219 California stations; it reaches 261 days one year in ten and falls short of 187 one year in ten. On average 35 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 May 5, and return around November 7. Nights of 24°F, cold enough to damage hardier plants, come in 71% of winters and 16°F in 3%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 14 | Apr 21 | Apr 26 | Apr 30 | May 5 | May 10 | May 16 | May 24 | Jun 1 |
| 32°F | Mar 9 | Mar 25 | Apr 5 | Apr 9 | Apr 15 | Apr 20 | Apr 26 | May 1 | May 9 |
| 28°F99% of yrs | Jan 9 | Feb 6 | Feb 21 | Mar 1 | Mar 11 | Mar 23 | Mar 31 | Apr 9 | Apr 17 |
| 24°F71% of yrs | Dec 20 | Jan 2 | Jan 10 | Jan 25 | Feb 3 | Feb 15 | Feb 23 | Mar 3 | Mar 22 |
| 20°F22% of yrs | too rare for a date | ||||||||
| 16°F3% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 14 | Oct 23 | Oct 29 | Nov 3 | Nov 7 | Nov 13 | Nov 17 | Nov 24 | Dec 1 |
| 32°F | Nov 1 | Nov 8 | Nov 15 | Nov 20 | Nov 26 | Dec 1 | Dec 4 | Dec 9 | Dec 16 |
| 28°F99% of yrs | Nov 17 | Nov 26 | Dec 1 | Dec 7 | Dec 12 | Dec 18 | Dec 24 | Jan 1 | Jan 22 |
| 24°F71% of yrs | Nov 29 | Dec 9 | Dec 18 | Dec 27 | Jan 1 | Jan 10 | Jan 24 | Feb 6 | Feb 23 |
| 20°F22% of yrs | too rare for a date | ||||||||
| 16°F3% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Sandberg, 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 93225 →Compare Frazier Park with another place →
Weather by month in Frazier Park
August is the warmest month at Sandberg, CA, averaging 88°F by day and 65°F at night; December is the coldest at 52°F and 38°F. A freezing night is all but certain in December (a 90% chance or more). From June to October the chance of a 32°F night stays under 10% each month.
Warmth for growing adds up to 4,098 growing degree days a year (base 50°F), fewer than at 57% of the 283 California stations. 30% of them (1,231) have built up by the end of June, and August adds the most, 831. Precipitation totals 13.3 inches a year, most in February (3.7") and least in June (0.1"); May to September bring 6% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 52 | 39 | 2.5 | 90% | 7 | 41 |
| Feb | 53 | 38 | 3.7 | 84% | 8 | 52 |
| Mar | 57 | 41 | 2.0 | 77% | 5 | 99 |
| Apr | 62 | 43 | 0.8 | 67% | 3 | 152 |
| May | 70 | 49 | 0.4 | 21% | <1 | 324 |
| Jun | 80 | 58 | 0.1 | 0% | 0 | 563 |
| Jul | 88 | 65 | 0.1 | 0% | 0 | 814 |
| Aug | 88 | 65 | 0.1 | 0% | 0 | 831 |
| Sep | 83 | 61 | 0.1 | 0% | 0 | 659 |
| Oct | 71 | 53 | 0.6 | 10% | <1 | 385 |
| Nov | 60 | 44 | 0.8 | 55% | 3 | 144 |
| Dec | 52 | 38 | 2.1 | 96% | 8 | 35 |
Monthly normals 1991–2020 at Sandberg, CA (4,510 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, Ojai, CA, 28 miles southwest of Frazier Park and 3,765 feet lower, has a last frost 25 days earlier (March 21), a first frost 11 days earlier (November 15), a season 11 days longer.
When it snows in Frazier Park, California
Measurable snow is rare here: only 7 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Lebec, CA, 8 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 93225
| When | What to do |
|---|---|
| February 4 – February 18 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 18 – March 4 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 18 – April 1 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 15 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 93225 is 17 miles from Sandberg, CA, which stands at 4,510 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 93225 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°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.