When to plant in Mount Kisco, NY
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Mount Kisco, New York — all computed from Mount Kisco's nearest NOAA weather station.
In zone 7a, Mount Kisco supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Mount Kisco is now 9 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
YORKTOWN HTS 1W · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Mount Kisco’s own odds, recorded at YORKTOWN HTS 1W.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 21 | May 7 | Apr 25 | Sep 26 | Oct 7 | Oct 22 |
| 32°F | May 8 | Apr 25 | Apr 13 | Oct 4 | Oct 19 | Nov 3 |
| 28°F | Apr 26 | Apr 13 | Apr 3 | Oct 15 | Nov 1 | Nov 14 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Mount Kisco, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 17 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Mount Kisco planting FAQ
When is the last spring frost in Mount Kisco, NY?
Plan for the last spring frost in Mount Kisco around April 25 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Mount Kisco, NY?
Expect Mount Kisco's first fall frost near October 19 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Mount Kisco in?
Mount Kisco is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Mount Kisco?
Mount Kisco has about 177 frost-free days — a moderate growing season — between the average last spring frost (April 25) and first fall frost (October 19).
When should I plant tomatoes in Mount Kisco?
For Mount Kisco, sow tomatoes indoors about February 28–March 14 and move the seedlings out around May 2, after the last spring frost.
Never miss a window in Mount Kisco
An email when it’s time to start seeds, transplant, and sow — timed to Mount Kisco’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Ossining · 13 km
- Jefferson Valley-Yorktown · 14 km
- Sleepy Hollow · 17 km
- Haverstraw · 18 km
- Peekskill · 19 km
- Tarrytown · 19 km
- Harrison · 20 km
- White Plains · 20 km
Frost dates recorded at YORKTOWN HTS 1W, 9 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Mount Kisco, NY — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00309670. Retrieved from https://blissgarden.com/new-york/mount-kisco.