Glenn County, California · Frost dates
Glenn County frost dates.
First-frost, last-frost, and growing-season length for Glenn County, California. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 9b
32°F — light freeze
Last spring frost
- 10%
- 04-24
- 20%
- 04-18
- 50%
- 04-05
- 80%
- 03-18
- 90%
- 03-08
First fall frost
- 10%
- 10-29
- 20%
- 11-02
- 50%
- 11-13
- 80%
- 11-24
- 90%
- 11-29
28°F — killing freeze
Last spring freeze
- 10%
- 04-05
- 20%
- 03-26
- 50%
- 03-01
- 80%
- 02-02
- 90%
- 01-16
First fall freeze
- 10%
- 11-08
- 20%
- 11-15
- 50%
- 11-29
- 80%
- 12-09
- 90%
- 12-19
Growing season length (days, 28°F threshold)
- Short year
- 217
- Median
- 273
- Long year
- 337
Source NOAA station
STONY GORGE RSVR, CA US
7.1 mi · 30 yrs of record (1991–2020) · 800 ft elev.
Data from STONY GORGE RSVR, CA US, 7.1 miles away with 30-year NOAA record (1991-2020).
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