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Will it freeze in Mount Vernon in the next 7 nights?
No overnight lows at or below 32°F are forecast in Mount Vernon during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 61°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 61°F Above 36°F · Light Rain Likely then Patchy Fog
- Fri, Nov 6 53°F Above 36°F · Light Rain Likely
- Sat, Nov 7 46°F Above 36°F · Slight Chance Light Rain
- Sun, Nov 8 43°F Above 36°F · Mostly Clear
- Mon, Nov 9 42°F Above 36°F · Mostly Clear
- Tue, Nov 10 43°F Above 36°F · Mostly Clear
- Wed, Nov 11 39°F Above 36°F · 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 Vernon
The median first fall hard-freeze date (28°F) is November 30, from NOAA’s 1991–2020 Climate Normals at Bronx. 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 1 · Apr 11 · Apr 26 | Oct 21 · Nov 4 · Nov 20 | 206 days |
| 32°F freeze | Mar 19 · Apr 1 · Apr 12 | Nov 2 · Nov 16 · Dec 4 | 230 days |
| 28°F hard freeze | Mar 8 · Mar 23 · Apr 3 | Nov 13 · Nov 30 · Dec 17 | 252 days |
Average high temperature by month
1991–2020 normals at Bronx
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 Vernon, NY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Bronx (station USC00300961, elevation 39 ft), 5.3 mi from Mount Vernon. 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 Vernon
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Pelham, NY | 1.2 mi | Apr 1 | Nov 16 |
| Bronxville, NY | 1.9 mi | Apr 20 | Oct 26 |
| Pelham Manor, NY | 1.9 mi | Apr 1 | Nov 16 |
| New Rochelle, NY | 2.5 mi | Apr 20 | Oct 26 |
| Tuckahoe, NY | 2.5 mi | Apr 20 | Oct 26 |
| Yonkers, NY | 3.1 mi | Apr 20 | Oct 26 |
| Larchmont, NY | 4.3 mi | Apr 20 | Oct 26 |
| Mamaroneck, NY | 5.6 mi | Apr 20 | Oct 26 |
| Hastings-on-Hudson, NY | 5.6 mi | Apr 20 | Oct 26 |
| Scarsdale, NY | 6.2 mi | Apr 20 | Oct 26 |
Frequently asked questions
When is the last frost in Mount Vernon?
On average, the last spring frost (32°F) in Mount Vernon is around April 1. In about 1 year in 10 it comes after April 12, and in 9 years in 10 it comes after March 19.
When is the first frost in Mount Vernon?
The first fall frost (32°F) usually arrives around November 16. There’s a 10% chance of a freeze by November 2 and a 90% chance by December 4.
Can it frost in Mount Vernon 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 April 11.
What growing zone is Mount Vernon?
Mount Vernon is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 10553. See growing zones in New York.
More: all New York frost dates · New York growing zones · UV index today in Mount Vernon · frost vs. freeze