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 (19912020) · 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.

Bield Farm earns its predictions.

14-day free trial. No credit card. Cancel anytime.

Start free trial