When should I expect my first freeze?
1. The USDA Hardiness Zone Method
| Zone | Last Frost Date | First Frost Date |
|---|---|---|
| 1 | May 22 – June 4 | August 25-31 |
| 2 | May 15-22 | September 1-8 |
| 3 | May 1-16 | September 8-15 |
| 4 | April 24 – May 12 | September 21 – October 7 |
When was the last hard freeze in Oklahoma?
Based purely on past events, the average last freeze in Oklahoma City is on March 30. The earliest that the last freeze hit the metro was Feb, 21, 1905, and latest the last spring freeze was on May 3, 1954.
What does first freeze mean?
In the fall, as temperatures start to cool, the FIRST day of the year that a FROST DAY occurs is considered the FIRST FROST DATE for that year. As the temperatures continue to cool, usually about a week or two later, the FIRST FREEZE DAY of the year will occur.
Will it freeze again in Oklahoma?
Each winter, on average, your risk of frost is from October 30 through April 7. Almost certainly, however, you will receive frost from November 14 through March 26. You are almost guaranteed that you will not get frost from April 19 through October 13. Your frost-free growing season is around 206 days.
What is considered a hard freeze?
Hard freeze occurs when the temperature reaches 28°-or-lower for at least a few hours. It usually means that many types of plants and most seasonal vegetation will be destroyed.
What are signs of an impending frost?
Cool, clear nights with low humidity, often following a cold front, are signs of an impending frost.
What is the average last freeze in Oklahoma?
March 30th
In Oklahoma City, the average last freeze comes on March 30th. Since this is an average, some years it comes earlier and some years it comes later. The earliest last freeze for OKC happened on February 21st, 1905 and the latest happened all the way into May on May 3rd, 1954.
Does the ground freeze in Oklahoma?
The average maximum depth that frost penetrates the soil ranges from less than three inches in the southeastern corner of the state to more than 10 inches in the northwestern reaches. Extreme frost penetration ranges from about 10 inches in the southeast to almost 30 inches in the western panhandle.
What temp is frost for plants?
32° Fahrenheit
Light freeze – 29° to 32° Fahrenheit will kill tender plants. Moderate freeze – 25° to 28° Fahrenheit is widely destructive to most vegetation. Severe or hard freeze – 25° Fahrenheit and colder causes heavy damage to most plants.
What temp is a killing frost?
28 degrees
In gardening terms, a “light freeze” or “light frost” refers to temperatures that fall just a few degrees below freezing for a few hours. Some hardy plants may not be damaged. A “hard frost” or “killing frost” comes when the temperature drops further, below 28 degrees, for a longer time.
How cold is a killing frost?
In gardening terms, a “light freeze” or “light frost” refers to temperatures that fall just a few degrees below freezing for a few hours. Some hardy plants may not be damaged. A “hard frost” or “killing frost” comes when the temperature drops further, below 28 degrees, for a longer time.