Frost Dates: First and last frost dates for Ny Ave V Brooklyn, NY

How to read these charts for the spring
As the growing season approaches, the days get longer, the weather begins to warm up, and the nights start being less cold. You're still getting frost, but the chance of nightly frosts gets less and less with each passing day. Eventually, the frost stops, and this is when your tender plants are fully safe. So, how do you plan for this? The probabilities on this page help you assess your risk of frost on any given day.

What's a safe temperature for tender plants? When the nightly temperature falls, frost can form, even above 32°, because the air is colder high above the ground and the frost can form up there and then fall down onto your garden and do some damage, even if it's 36° on the ground. So many factors come into play, including wind, concrete, houses, trees and other structures, etc etc etc. Because of all this, you might want to consider 36° as "the danger zone".

In your average springtime, you have a 90% chance that there will be no 36° nights by April 21. In other words, you can pretty much count on being safe from frost by that day. But we want to get those tomatoes in the ground as soon as possible, right? We see that there's still an 80% chance of 36° on April 5, so we don't dare plant that early. We wait a few days and by April 11 we are at the 50/50 point. At this point, we are close and we can start watching the weather forecast. If the upcoming week's forecast doesn't show below 40°, then it's probably okay to risk planting out your plants.

In the Spring
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
Last 16° Mar 14 Mar 6 Feb 28 Feb 23 Feb 19 Feb 14 Feb 9 Feb 4 Jan 27
Last 20° Mar 25 Mar 18 Mar 13 Mar 9 Mar 5 Mar 1 Feb 25 Feb 20 Feb 13
Last 24° Mar 29 Mar 23 Mar 19 Mar 16 Mar 13 Mar 10 Mar 6 Mar 2 Feb 25
Last 28° Apr 7 Apr 2 Mar 30 Mar 27 Mar 24 Mar 21 Mar 18 Mar 15 Mar 10
Last 32° Apr 13 Apr 9 Apr 6 Apr 4 Apr 1 Mar 30 Mar 28 Mar 25 Mar 21
Last 36° Apr 21 Apr 18 Apr 15 Apr 13 Apr 11 Apr 9 Apr 7 Apr 5 Apr 1

How to read these charts for the fall
As your growing season comes to an end, the nightly temperatures for Ny Ave V Brooklyn, NY start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around November 2, and by November 28 you're almost certain to have received at least one frost event.

The charts on this page show the probabilities of receiving a certain temperature on a certain day. Some examples that might help:

  1. You have a small 20% chance of getting 32° by November 7.
  2. There is a 50% chance of being hit by a 32° frost starting around November 18
  3. You have a 80% chance of seeing 32° by November 28
  4. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night.
In the Fall
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
First 16° Dec 9 Dec 16 Dec 21 Dec 26 Dec 30 Jan 3 Jan 8 Jan 13 Jan 20
First 20° Dec 4 Dec 9 Dec 13 Dec 16 Dec 20 Dec 23 Dec 26 Dec 30 Jan 5
First 24° Nov 22 Nov 29 Dec 3 Dec 7 Dec 11 Dec 14 Dec 18 Dec 23 Dec 29
First 28° Nov 14 Nov 19 Nov 23 Nov 26 Nov 29 Dec 1 Dec 4 Dec 8 Dec 13
First 32° Nov 2 Nov 7 Nov 11 Nov 14 Nov 18 Nov 21 Nov 24 Nov 28 Dec 3
First 36° Oct 21 Oct 26 Oct 30 Nov 2 Nov 5 Nov 8 Nov 12 Nov 16 Nov 21

Frost Dates for other nearby locations
  • New York Jfk, NY
  • Sandy Hook, NJ
  • New York La Guardia, NY
  • Ny City Cntrl Park, NY
  • Newark, NJ
  • Mineola, NY
  • Long Branch Oakhurst, NJ
  • Cranford, NJ
  • Dobbs Ferry-ardsley, NY
  • Little Falls, NJ

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    • Data is provided by the NOAA National Centers for Environmental Information.