Frost Dates: First and last frost dates for minocqua, wi
The charts on this page show the probabilities of receiving a certain temperature on a certain day. Some examples that might help:
- You have a small 20% chance of getting 32° by September 17.
- There is a 50% chance of being hit by a 32° frost starting around September 26
- You have a 80% chance of seeing 32° by October 5
- Said another way, you have a 1 in 5 chance at making it to that day without a 32° night.
Temperature | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
---|---|---|---|---|---|---|---|---|---|
First 16° | Oct 26 | Oct 30 | Nov 2 | Nov 5 | Nov 7 | Nov 9 | Nov 12 | Nov 15 | Nov 19 |
First 20° | Oct 16 | Oct 21 | Oct 25 | Oct 28 | Oct 30 | Nov 2 | Nov 5 | Nov 8 | Nov 13 |
First 24° | Oct 2 | Oct 8 | Oct 13 | Oct 17 | Oct 21 | Oct 25 | Oct 29 | Nov 3 | Nov 10 |
First 28° | Sep 18 | Sep 24 | Sep 28 | Oct 1 | Oct 4 | Oct 7 | Oct 11 | Oct 14 | Oct 20 |
First 32° | Sep 13 | Sep 17 | Sep 21 | Sep 24 | Sep 26 | Sep 29 | Oct 2 | Oct 5 | Oct 10 |
First 36° | Sep 4 | Sep 7 | Sep 10 | Sep 12 | Sep 14 | Sep 16 | Sep 18 | Sep 21 | Sep 24 |
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 June 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 May 27, so we don't dare plant that early. We wait a few days and by June 6 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.
Temperature | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
---|---|---|---|---|---|---|---|---|---|
Last 16° | Apr 22 | Apr 18 | Apr 14 | Apr 12 | Apr 9 | Apr 7 | Apr 4 | Apr 1 | Mar 27 |
Last 20° | Apr 30 | Apr 25 | Apr 22 | Apr 19 | Apr 16 | Apr 14 | Apr 11 | Apr 8 | Apr 3 |
Last 24° | May 6 | May 2 | Apr 30 | Apr 27 | Apr 25 | Apr 23 | Apr 20 | Apr 17 | Apr 13 |
Last 28° | May 23 | May 18 | May 15 | May 11 | May 8 | May 5 | May 2 | Apr 29 | Apr 23 |
Last 32° | Jun 11 | Jun 5 | Jun 2 | May 30 | May 27 | May 24 | May 21 | May 17 | May 12 |
Last 36° | Jun 21 | Jun 16 | Jun 12 | Jun 9 | Jun 6 | Jun 3 | May 30 | May 27 | May 21 |
Data is provided by the NOAA National Centers for Environmental Information.