California · NOAA station USW00023272
Frost dates for San Francisco Dwtn, CA
San Francisco Dwtn did not record a 32°F freeze in the 1991–2020 normals period, so it has no spring or fall frost date. Frost-tender plants can grow year-round here, though cold snaps are still possible. Nearby ZIP codes are in USDA hardiness zones 10a to 10b.
- 0%Chance of 32°F in a year
- 9%Chance of 36°F in a year
- 51.3°FAverage lowest temp (annual mean min)
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 9% |
| 32°F | 0% |
| 28°F | 0% |
| 24°F | 0% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 94102 | 10b | 35 to 40°F | 1 km |
| 94103 | 10b | 35 to 40°F | 1 km |
| 94117 | 10b | 35 to 40°F | 2 km |
| 94114 | 10b | 35 to 40°F | 2 km |
| 94115 | 10b | 35 to 40°F | 2 km |
| 94110 | 10b | 35 to 40°F | 3 km |
| 94109 | 10b | 35 to 40°F | 3 km |
| 94107 | 10b | 35 to 40°F | 3 km |
| 94108 | 10b | 35 to 40°F | 3 km |
| 94131 | 10b | 35 to 40°F | 3 km |
| 94104 | 10b | 35 to 40°F | 3 km |
| 94118 | 10b | 35 to 40°F | 3 km |
| 94158 | 10b | 35 to 40°F | 3 km |
| 94123 | 10b | 35 to 40°F | 4 km |
| 94105 | 10b | 35 to 40°F | 4 km |
| 94133 | 10b | 35 to 40°F | 4 km |
| 94111 | 10b | 35 to 40°F | 4 km |
| 94129 | 10b | 35 to 40°F | 4 km |
| 94188 | 10b | 35 to 40°F | 5 km |
| 94134 | 10b | 35 to 40°F | 6 km |
| 94124 | 10b | 35 to 40°F | 6 km |
| 94130 | 10b | 35 to 40°F | 7 km |
| 94965 | 10a | 30 to 35°F | 12 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 USW00023272, at 37.7706, -122.4269, elevation 46 m (150 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 0.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- San Francisco Oceanside (8 km)
- Oakland Museum (15 km)
- Richmond (17 km)
- San Francisco Intl Airport (18 km)
- Berkeley (19 km)
- Oakland Metro Intl Airport (19 km)
- Pacifica 4 SSE (20 km)
- Kentfield (23 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.