Frost dates for Woodland 1 WNW, CA
At Woodland 1 WNW, the median last spring frost (32°F) is Feb 7 and the median first fall frost is Dec 5, for a typical growing season of 301 days. For a 90% chance that the last frost has passed, wait until Mar 11. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 7Last spring frost (median)50% chance of 32°F after this date
- Mar 11Safer planting date10% chance of 32°F after this date
- Dec 5First fall frost (median)50% chance of 32°F by this date
- 301 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Feb 15 | Mar 15 | Apr 12 |
| 32°F | Jan 9 | Feb 7 | Mar 11 |
| 28°F | Dec 14 | Jan 10 | Feb 2 |
| 24°F | Dec 11 | Dec 31 | Jan 22 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Nov 4 | Nov 20 | Dec 5 |
| 32°F | Nov 19 | Dec 5 | Jan 1 |
| 28°F | Dec 1 | Dec 18 | Jan 16 |
| 24°F | Dec 7 | Dec 27 | Jan 18 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 215 days | 246 days | 280 days |
| 32°F | 260 days | 301 days | 336 days |
| 28°F | 320 days | 347 days | 365 days |
| 24°F | 349 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 98% |
| 28°F | 71% |
| 24°F | 24% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 95695 | 9b | 25 to 30°F | 5 km |
| 95697 | 9b | 25 to 30°F | 6 km |
| 95776 | 9b | 25 to 30°F | 8 km |
| 95653 | 9b | 25 to 30°F | 16 km |
| 95698 | 9b | 25 to 30°F | 18 km |
| 95627 | 9b | 25 to 30°F | 21 km |
| 95676 | 9b | 25 to 30°F | 22 km |
| 95645 | 9b | 25 to 30°F | 23 km |
| 95937 | 9b | 25 to 30°F | 29 km |
| 95607 | 9a | 20 to 25°F | 33 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00049781, at 38.6828, -121.7939, elevation 20 m (67 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 9.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Davis 2 WSW Exp. Farm (17 km)
- Sacramento Metro Airport (18 km)
- Winters (24 km)
- Lake Solano (28 km)
- Sacramento Executive Airport (33 km)
- Vacaville (35 km)
- Sacramento 5 ESE (36 km)
- Markley Cove (36 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.