Shasta County, California · Frost dates
Shasta County frost dates.
First-frost, last-frost, and growing-season length for Shasta County, California. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 9b
32°F — light freeze
Last spring frost
- 10%
- 03-28
- 20%
- 03-11
- 50%
- 02-08
- 80%
- 01-05
- 90%
- 12-26
First fall frost
- 10%
- 12-01
- 20%
- 12-09
- 50%
- 12-28
- 80%
- 01-24
- 90%
- 02-18
28°F — killing freeze
Last spring freeze
- 10%
- 03-14
- 20%
- 02-28
- 50%
- 01-18
- 80%
- 12-23
- 90%
- 12-14
First fall freeze
- 10%
- 12-10
- 20%
- 12-17
- 50%
- 01-04
- 80%
- 02-25
- 90%
- 03-10
Growing season length (days, 28°F threshold)
- Short year
- 271
- Median
- 351
- Long year
- 451
Source NOAA station
SHASTA DAM, CA US
19.8 mi · 30 yrs of record (1991–2020) · 1075 ft elev.
Data from SHASTA DAM, CA US, 19.8 miles away with 30-year NOAA record (1991-2020).
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