Orange County, California · Frost dates
Orange County frost dates.
First-frost, last-frost, and growing-season length for Orange County, California. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 9b
32°F — light freeze
Last spring frost
- 10%
- 02-02
- 20%
- 01-23
- 50%
- 01-05
- 80%
- 12-22
- 90%
- 12-14
First fall frost
- 10%
- 12-03
- 20%
- 12-09
- 50%
- 12-25
- 80%
- 01-09
- 90%
- 01-20
28°F — killing freeze
Last spring freeze
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
First fall freeze
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
Growing season length (days, 28°F threshold)
- Short year
- 0
- Median
- 0
- Long year
- 0
Source NOAA station
TUSTIN IRVINE RCH, CA US
2.3 mi · 25 yrs of record (1991–2020) · 235 ft elev.
Data from TUSTIN IRVINE RCH, CA US, 2.3 miles away with 25-year NOAA record (1991-2020).
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