Ontario County, New York · Frost dates
Ontario County frost dates.
First-frost, last-frost, and growing-season length for Ontario County, New York. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 05-12
- 20%
- 05-07
- 50%
- 04-29
- 80%
- 04-21
- 90%
- 04-16
First fall frost
- 10%
- 10-06
- 20%
- 10-11
- 50%
- 10-22
- 80%
- 11-01
- 90%
- 11-06
28°F — killing freeze
Last spring freeze
- 10%
- 04-30
- 20%
- 04-25
- 50%
- 04-16
- 80%
- 04-08
- 90%
- 04-04
First fall freeze
- 10%
- 10-19
- 20%
- 10-26
- 50%
- 11-04
- 80%
- 11-13
- 90%
- 11-18
Growing season length (days, 28°F threshold)
- Short year
- 172
- Median
- 202
- Long year
- 228
Source NOAA station
CANANDAIGUA 3 S, NY US
1.4 mi · 30 yrs of record (1991–2020) · 720 ft elev.
Data from CANANDAIGUA 3 S, NY US, 1.4 miles away with 30-year NOAA record (1991-2020).
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