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Will it freeze in Mount Kisco in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 31°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).
Tonight: forecast low 60°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 60°F Above 36°F · Light Rain
- Fri, Nov 6 50°F Above 36°F · Chance Light Rain
- Sat, Nov 7 42°F Above 36°F · Chance Light Rain
- Sun, Nov 8 37°F Above 36°F · Mostly Clear
- Mon, Nov 9 34°F Frost possible · Mostly Clear
- Tue, Nov 10 36°F Frost possible · Mostly Clear
- Wed, Nov 11 31°F Freeze · Partly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Mount Kisco
The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at Yorktown Heights 1W. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Apr 25 · May 7 · May 21 | Sep 26 · Oct 7 · Oct 22 | 152 days |
| 32°F freeze | Apr 13 · Apr 25 · May 8 | Oct 4 · Oct 19 · Nov 3 | 174 days |
| 28°F hard freeze | Apr 3 · Apr 13 · Apr 26 | Oct 15 · Nov 1 · Nov 14 | 198 days |
Average high temperature by month
1991–2020 normals at Yorktown Heights 1W
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Mount Kisco, NY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Yorktown Heights 1W (station USC00309670, elevation 670 ft), 5.7 mi from Mount Kisco. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Mount Kisco
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Pleasantville, NY | 5.6 mi | Apr 12 | Oct 31 |
| Briarcliff Manor, NY | 7.5 mi | Apr 12 | Oct 31 |
| Ossining, NY | 8.1 mi | Apr 25 | Oct 19 |
| Croton-on-Hudson, NY | 8.7 mi | Apr 25 | Oct 19 |
| Sleepy Hollow, NY | 11 mi | Apr 20 | Oct 26 |
| Elmsford, NY | 11 mi | Apr 20 | Oct 26 |
| Haverstraw, NY | 11 mi | Apr 25 | Oct 19 |
| Peekskill, NY | 12 mi | Apr 30 | Oct 17 |
| Tarrytown, NY | 12 mi | Apr 20 | Oct 26 |
| Rye Brook, NY | 12 mi | Apr 12 | Oct 31 |
Frequently asked questions
When is the last frost in Mount Kisco?
On average, the last spring frost (32°F) in Mount Kisco is around April 25. In about 1 year in 10 it comes after May 8, and in 9 years in 10 it comes after April 13.
When is the first frost in Mount Kisco?
The first fall frost (32°F) usually arrives around October 19. There’s a 10% chance of a freeze by October 4 and a 90% chance by November 3.
Can it frost in Mount Kisco after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 7.
What growing zone is Mount Kisco?
Mount Kisco is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 10549. See growing zones in New York.
More: all New York frost dates · New York growing zones · frost vs. freeze