San Bernardino County, California · Frost dates
San Bernardino County frost dates.
First-frost, last-frost, and growing-season length for San Bernardino County, California. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: moderate · USDA zone: 9b
32°F — light freeze
Last spring frost
- 10%
- 03-04
- 20%
- 02-27
- 50%
- 02-14
- 80%
- 01-31
- 90%
- 01-25
First fall frost
- 10%
- 11-12
- 20%
- 11-18
- 50%
- 11-27
- 80%
- 12-05
- 90%
- 12-09
28°F — killing freeze
Last spring freeze
- 10%
- 02-20
- 20%
- 02-11
- 50%
- 01-30
- 80%
- 01-10
- 90%
- 12-31
First fall freeze
- 10%
- 11-24
- 20%
- 11-29
- 50%
- 12-08
- 80%
- 12-19
- 90%
- 12-26
Growing season length (days, 28°F threshold)
- Short year
- 277
- Median
- 312
- Long year
- 360
Source NOAA station
BAKER, CA US
29.7 mi · 30 yrs of record (1991–2020) · 962 ft elev.
Nearest qualifying NOAA station is BAKER, CA US, 29.7 miles away. Local frost dates may vary by 1–2 weeks from these averages.
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