Cortland County, New York · Frost dates
Cortland County frost dates.
First-frost, last-frost, and growing-season length for Cortland County, New York. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 05-28
- 20%
- 05-22
- 50%
- 05-12
- 80%
- 05-03
- 90%
- 04-29
First fall frost
- 10%
- 09-22
- 20%
- 09-27
- 50%
- 10-05
- 80%
- 10-16
- 90%
- 10-23
28°F — killing freeze
Last spring freeze
- 10%
- 05-17
- 20%
- 05-11
- 50%
- 05-01
- 80%
- 04-22
- 90%
- 04-17
First fall freeze
- 10%
- 10-01
- 20%
- 10-05
- 50%
- 10-18
- 80%
- 10-31
- 90%
- 11-04
Growing season length (days, 28°F threshold)
- Short year
- 137
- Median
- 170
- Long year
- 201
Source NOAA station
TULLY HEIBERG FOREST, NY US
11.5 mi · 30 yrs of record (1991–2020) · 1899 ft elev.
Data from TULLY HEIBERG FOREST, NY US, 11.5 miles away with 30-year NOAA record (1991-2020).
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