Frost Dates: First and last frost dates for bodie ca st historic park, ca
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 August 3. 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 July 26, so we don't dare plant that early. We wait a few days and by July 29 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° | Jun 27 | Jun 19 | Jun 13 | Jun 8 | Jun 3 | May 29 | May 24 | May 18 | May 10 |
Last 20° | Jul 15 | Jul 7 | Jul 1 | Jun 26 | Jun 22 | Jun 17 | Jun 12 | Jun 6 | May 29 |
Last 24° | Jul 29 | Jul 22 | Jul 17 | Jul 13 | Jul 9 | Jul 5 | Jul 1 | Jun 26 | Jun 20 |
Last 28° | Aug 4 | Jul 29 | Jul 26 | Jul 22 | Jul 19 | Jul 16 | Jul 13 | Jul 9 | Jul 3 |
Last 32° | Aug 2 | Jul 31 | Jul 29 | Jul 28 | Jul 27 | Jul 25 | Jul 24 | Jul 22 | Jul 20 |
Last 36° | Aug 3 | Aug 1 | Jul 31 | Jul 30 | Jul 29 | Jul 28 | Jul 27 | Jul 26 | Jul 24 |
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 August 1.
- There is a 50% chance of being hit by a 32° frost starting around August 6
- You have a 80% chance of seeing 32° by August 11
- 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° | Aug 25 | Sep 3 | Sep 9 | Sep 14 | Sep 19 | Sep 24 | Sep 29 | Oct 5 | Oct 13 |
First 20° | Aug 13 | Aug 20 | Aug 26 | Aug 31 | Sep 4 | Sep 8 | Sep 13 | Sep 18 | Sep 26 |
First 24° | Aug 3 | Aug 8 | Aug 12 | Aug 15 | Aug 18 | Aug 21 | Aug 24 | Aug 28 | Sep 2 |
First 28° | Jul 31 | Aug 4 | Aug 6 | Aug 9 | Aug 11 | Aug 14 | Aug 16 | Aug 19 | Aug 23 |
First 32° | Jul 30 | Aug 1 | Aug 3 | Aug 4 | Aug 6 | Aug 8 | Aug 9 | Aug 11 | Aug 14 |
First 36° | Jul 31 | Jul 31 | Aug 1 | Aug 2 | Aug 3 | Aug 4 | Aug 4 | Aug 5 | Aug 7 |
Data is provided by the NOAA National Centers for Environmental Information.