Sullivan County, Indiana · Frost dates
Sullivan County frost dates.
First-frost, last-frost, and growing-season length for Sullivan County, Indiana. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-01
- 20%
- 04-24
- 50%
- 04-14
- 80%
- 04-04
- 90%
- 03-31
First fall frost
- 10%
- 10-12
- 20%
- 10-17
- 50%
- 10-26
- 80%
- 11-02
- 90%
- 11-06
28°F — killing freeze
Last spring freeze
- 10%
- 04-17
- 20%
- 04-11
- 50%
- 04-01
- 80%
- 03-24
- 90%
- 03-19
First fall freeze
- 10%
- 10-23
- 20%
- 10-27
- 50%
- 11-03
- 80%
- 11-12
- 90%
- 11-17
Growing season length (days, 28°F threshold)
- Short year
- 189
- Median
- 216
- Long year
- 243
Source NOAA station
SHAKAMAK SP, IN US
10.5 mi · 30 yrs of record (1991–2020) · 549 ft elev.
Data from SHAKAMAK SP, IN US, 10.5 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.