Frost dates for Woodland Hills Pierce College, CA
At Woodland Hills Pierce College, the median last spring frost (32°F) is Jan 24 and the median first fall frost is Dec 15, for a typical growing season of 329 days. For a 90% chance that the last frost has passed, wait until Mar 5. Nearby ZIP codes are in USDA hardiness zones 9b to 10b.
- Jan 24Last spring frost (median)50% chance of 32°F after this date
- Mar 5Safer planting date10% chance of 32°F after this date
- Dec 15First fall frost (median)50% chance of 32°F by this date
- 329 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 | Jan 30 | Mar 2 | Apr 7 |
| 32°F | Dec 21 | Jan 24 | Mar 5 |
| 28°F | Dec 5 | Dec 31 | Feb 1 |
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 12 | Nov 29 | Dec 19 |
| 32°F | Nov 27 | Dec 15 | Jan 26 |
| 28°F | Dec 1 | Dec 26 | Jan 25 |
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 | 234 days | 271 days | 309 days |
| 32°F | 277 days | 329 days | 365 days |
| 28°F | 341 days | 365 days | 365 days |
| 24°F | 365 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 91% |
| 28°F | 35% |
| 24°F | 5% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 91371 | 9b | 25 to 30°F | 0 km |
| 91306 | 10a | 30 to 35°F | 3 km |
| 91303 | 9b | 25 to 30°F | 3 km |
| 91364 | 10a | 30 to 35°F | 4 km |
| 91335 | 10a | 30 to 35°F | 4 km |
| 91367 | 10a | 30 to 35°F | 4 km |
| 91356 | 10a | 30 to 35°F | 4 km |
| 91316 | 10a | 30 to 35°F | 6 km |
| 91304 | 10a | 30 to 35°F | 8 km |
| 91307 | 10a | 30 to 35°F | 9 km |
| 90290 | 10b | 35 to 40°F | 9 km |
| 91302 | 10b | 35 to 40°F | 11 km |
| 93064 | 10a | 30 to 35°F | 14 km |
| 91377 | 10b | 35 to 40°F | 18 km |
| 91301 | 10b | 35 to 40°F | 18 km |
| 93065 | 10a | 30 to 35°F | 20 km |
| 91362 | 10b | 35 to 40°F | 23 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 USC00049785, at 34.1819, -118.5744, elevation 241 m (790 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 11.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Northridge Cal State (8 km)
- Van Nuys Airport (8 km)
- Getty Center (14 km)
- U C L A (17 km)
- Burbank Glendale Pasadena Airport (20 km)
- Santa Monica Pier (21 km)
- Burbank Valley Pump Plant (21 km)
- Santa Monica Muni Airport (22 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.