Frost Dates: First and last frost dates for burley muni ap, id
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 24. 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 16, so we don't dare plant that early. We wait a few days and by May 31 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° | Mar 30 | Mar 20 | Mar 13 | Mar 7 | Mar 2 | Feb 24 | Feb 18 | Feb 11 | Feb 2 |
Last 20° | Apr 13 | Apr 4 | Mar 28 | Mar 23 | Mar 17 | Mar 12 | Mar 7 | Feb 28 | Feb 19 |
Last 24° | May 2 | Apr 24 | Apr 18 | Apr 13 | Apr 8 | Apr 4 | Mar 30 | Mar 24 | Mar 16 |
Last 28° | May 14 | May 8 | May 3 | Apr 30 | Apr 26 | Apr 23 | Apr 19 | Apr 14 | Apr 8 |
Last 32° | May 22 | May 17 | May 13 | May 10 | May 6 | May 3 | Apr 30 | Apr 26 | Apr 20 |
Last 36° | Jun 24 | Jun 16 | Jun 10 | Jun 5 | May 31 | May 27 | May 22 | May 16 | May 8 |
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 19.
- There is a 50% chance of being hit by a 32° frost starting around September 30
- You have a 80% chance of seeing 32° by October 10
- 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 31 | Nov 5 | Nov 9 | Nov 13 | Nov 16 | Nov 19 | Nov 22 | Nov 26 | Dec 2 |
First 20° | Oct 14 | Oct 21 | Oct 26 | Oct 30 | Nov 2 | Nov 6 | Nov 10 | Nov 15 | Nov 21 |
First 24° | Oct 4 | Oct 10 | Oct 15 | Oct 19 | Oct 23 | Oct 27 | Oct 31 | Nov 4 | Nov 11 |
First 28° | Sep 26 | Oct 1 | Oct 5 | Oct 9 | Oct 12 | Oct 15 | Oct 19 | Oct 23 | Oct 29 |
First 32° | Sep 13 | Sep 19 | Sep 23 | Sep 26 | Sep 30 | Oct 3 | Oct 6 | Oct 10 | Oct 16 |
First 36° | Aug 30 | Sep 5 | Sep 9 | Sep 12 | Sep 16 | Sep 19 | Sep 22 | Sep 26 | Oct 2 |
Data is provided by the NOAA National Centers for Environmental Information.