USDA Hardiness Zone 10a
Frost Dates for 93955 — Seaside, California
NOAA 1991–2020 normals from Monterey WFO, CA (122 ft), 2 miles southwest.
Updated
Frost is not a yearly event in Seaside: a night at or below 32°F came in 47% of the winters of 1991–2020 at Monterey WFO, CA, and a 36°F night, cold enough for frost on exposed leaves, in 97%. There is no reliable "last frost date" here; most years have none.
- Winters with a freeze
- 47%
- Winters with 36°F
- 97%
- Coldest month low
- 43°F
- Hardiness zone
- 10a
32°F or below, 1991–2020
frost possible on leaves
average, December
30 to 35°F (-1.1 to 1.7°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 0%
- Snow per year
- 0"
median, 1991–2020
median, 1991–2020
0 of 20 observed
NOAA normal
Frost risk by date in Seaside
At Monterey WFO, CA, 2 miles southwest of Seaside, 47% of the winters of 1991–2020 had at least one night at or below 32°F, 6% reached 28°F. Nights of 36°F, enough for frost on exposed leaves, are more common (97% of winters) and, when they come, fall between about December 10 and February 1. January is the month most likely to bring one: a 27% chance in a given year. 62 of the 283 other California stations behind this site's ZIP pages freeze in fewer than half of winters too.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F97% of yrs | Dec 30 | Jan 8 | Jan 17 | Jan 25 | Feb 1 | Feb 6 | Feb 13 | Feb 25 | Mar 3 |
| 32°F47% of yrs | too rare for a date | ||||||||
| 28°F6% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F97% of yrs | Nov 21 | Nov 27 | Dec 1 | Dec 5 | Dec 10 | Dec 15 | Dec 21 | Dec 28 | Jan 6 |
| 32°F47% of yrs | too rare for a date | ||||||||
| 28°F6% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Monterey WFO, 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 93955 →Compare Seaside with another place →
Weather by month in Seaside
September is the warmest month at Monterey WFO, CA, averaging 68°F by day and 54°F at night; December is the coldest at 58°F and 43°F. From February to November the chance of a 32°F night stays under 10% each month.
Warmth for growing adds up to 2,325 growing degree days a year (base 50°F), fewer than at 90% of the 283 California stations. 37% of them (866) have built up by the end of June, and August adds the most, 338. Precipitation totals 17.2 inches a year, most in January (3.5") and least in July (0.0"); May to September bring 5% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 59 | 43 | 3.5 | 27% | 1 | 76 |
| Feb | 60 | 44 | 3.5 | 1% | 0 | 80 |
| Mar | 61 | 46 | 2.9 | 0% | 0 | 112 |
| Apr | 62 | 47 | 1.2 | 0% | 0 | 136 |
| May | 63 | 50 | 0.5 | 0% | 0 | 204 |
| Jun | 65 | 52 | 0.1 | 0% | 0 | 258 |
| Jul | 66 | 54 | 0.0 | 0% | 0 | 313 |
| Aug | 67 | 55 | 0.1 | 0% | 0 | 338 |
| Sep | 68 | 54 | 0.1 | 0% | 0 | 335 |
| Oct | 67 | 51 | 0.8 | 0% | 0 | 274 |
| Nov | 63 | 46 | 1.6 | 2% | 0 | 137 |
| Dec | 58 | 43 | 2.9 | 26% | 1 | 62 |
Monthly normals 1991–2020 at Monterey WFO, CA (122 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, Monterey, CA, 4 miles southwest of Seaside, has a 32°F night in 20% of winters against 47% here, and a coolest-month low 1°F warmer (44°F).
When it snows in Seaside, California
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Monterey WFO, CA, 2 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 93955 is 2 miles from Monterey WFO, CA, which stands at 122 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 93955 in zone 10a, the band where the coldest night of the year averaged 30 to 35°F (-1.1 to 1.7°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.