Pima County, Arizona · Frost dates
Pima County frost dates.
First-frost, last-frost, and growing-season length for Pima County, Arizona. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 05-17
- 20%
- 05-09
- 50%
- 04-26
- 80%
- 04-09
- 90%
- 04-01
First fall frost
- 10%
- 10-18
- 20%
- 10-24
- 50%
- 11-04
- 80%
- 11-17
- 90%
- 11-24
28°F — killing freeze
Last spring freeze
- 10%
- 05-05
- 20%
- 04-27
- 50%
- 04-07
- 80%
- 03-21
- 90%
- 03-08
First fall freeze
- 10%
- 10-27
- 20%
- 11-03
- 50%
- 11-17
- 80%
- 12-02
- 90%
- 12-08
Growing season length (days, 28°F threshold)
- Short year
- 175
- Median
- 224
- Long year
- 275
Source NOAA station
KITT PEAK, AZ US
15.9 mi · 30 yrs of record (1991–2020) · 6790 ft elev.
Data from KITT PEAK, AZ US, 15.9 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.