Alameda County, California · Frost dates
Alameda County frost dates.
First-frost, last-frost, and growing-season length for Alameda County, California. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 9b
32°F — light freeze
Last spring frost
- 10%
- 03-13
- 20%
- 03-05
- 50%
- 02-15
- 80%
- 01-26
- 90%
- 01-12
First fall frost
- 10%
- 11-16
- 20%
- 11-22
- 50%
- 12-02
- 80%
- 12-14
- 90%
- 12-28
28°F — killing freeze
Last spring freeze
- 10%
- 02-10
- 20%
- 01-31
- 50%
- 01-10
- 80%
- 12-26
- 90%
- 12-19
First fall freeze
- 10%
- 11-29
- 20%
- 12-04
- 50%
- 12-18
- 80%
- 01-06
- 90%
- 01-17
Growing season length (days, 28°F threshold)
- Short year
- 292
- Median
- 342
- Long year
- 394
Source NOAA station
LIVERMORE, CA US
6.2 mi · 30 yrs of record (1991–2020) · 393 ft elev.
Data from LIVERMORE, CA US, 6.2 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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