Graham County, Arizona · Frost dates
Graham County frost dates.
First-frost, last-frost, and growing-season length for Graham County, Arizona. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 04-18
- 20%
- 04-11
- 50%
- 04-01
- 80%
- 03-20
- 90%
- 03-15
First fall frost
- 10%
- 10-21
- 20%
- 10-27
- 50%
- 11-06
- 80%
- 11-15
- 90%
- 11-19
28°F — killing freeze
Last spring freeze
- 10%
- 04-03
- 20%
- 03-28
- 50%
- 03-13
- 80%
- 03-02
- 90%
- 02-24
First fall freeze
- 10%
- 10-30
- 20%
- 11-05
- 50%
- 11-16
- 80%
- 11-24
- 90%
- 11-29
Growing season length (days, 28°F threshold)
- Short year
- 210
- Median
- 248
- Long year
- 278
Source NOAA station
FT THOMAS 2 SW, AZ US
8.2 mi · 30 yrs of record (1991–2020) · 2835 ft elev.
Data from FT THOMAS 2 SW, AZ US, 8.2 miles away with 30-year NOAA record (1991-2020).
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