Detailed station data* follows:
|Spring 32°||Mar 15||Mar 6||Feb 28||Feb 22||Feb 17||Feb 12||Feb 7||Jan 31||Jan 23|
|Spring 28°||Mar 6||Feb 24||Feb 17||Feb 10||Feb 4||Jan 29||Jan 22||Jan 13||Dec 27|
|Spring 24°||Feb 19||Feb 9||Feb 1||Jan 25||Jan 17||Jan 7||- -||- -||- -|
|Fall 32°||Nov 14||Nov 21||Nov 26||Dec 2||Dec 6||Dec 10||Dec 15||Dec 20||Dec 28|
|Fall 28°||Nov 27||Dec 6||Dec 11||Dec 16||Dec 21||Dec 26||Dec 31||Jan 7||Jan 20|
|Fall 24°||Dec 11||Dec 22||Jan 1||Jan 9||Jan 19||Feb 2||- -||- -||- -|
|Spring 32°||Apr 13||Apr 5||Mar 30||Mar 24||Mar 20||Mar 15||Mar 9||Mar 3||Feb 23|
|Spring 28°||Mar 30||Mar 21||Mar 15||Mar 9||Mar 3||Feb 26||Feb 20||Feb 14||Feb 4|
|Spring 24°||Mar 7||Feb 26||Feb 19||Feb 14||Feb 8||Feb 3||Jan 28||Jan 20||Jan 9|
|Fall 32°||Oct 25||Oct 31||Nov 4||Nov 7||Nov 11||Nov 14||Nov 18||Nov 23||Nov 29|
|Fall 28°||Nov 2||Nov 10||Nov 15||Nov 20||Nov 24||Nov 28||Dec 4||Dec 10||Dec 17|
|Fall 24°||Nov 12||Nov 21||Nov 27||Dec 4||Dec 9||Dec 15||Dec 21||Dec 28||Jan 8|
|Spring 32°||Mar 30||Mar 21||Mar 15||Mar 10||Mar 5||Mar 1||Feb 23||Feb 17||Feb 9|
|Spring 28°||Mar 18||Mar 9||Mar 3||Feb 26||Feb 21||Feb 16||Feb 11||Feb 5||Jan 28|
|Spring 24°||Mar 4||Feb 21||Feb 13||Feb 5||Jan 29||Jan 22||Jan 14||Jan 3||- -|
|Fall 32°||Oct 31||Nov 6||Nov 11||Nov 15||Nov 19||Nov 23||Nov 27||Dec 3||Dec 10|
|Fall 28°||Nov 11||Nov 19||Nov 25||Dec 1||Dec 6||Dec 11||Dec 16||Dec 22||Dec 30|
|Fall 24°||Nov 22||Dec 1||Dec 7||Dec 12||Dec 16||Dec 21||Dec 27||Jan 4||- -|
* This station data is available courtesy the National Climatic Data Center.
For each weather station, you will see a temperature along with tables of data organized into percentage columns. The percentage column tells you the probability that you will experience that row's temperature on or near that date. Here are two examples to help you determine your probable last frost and first freeze dates.
Example 1 (Last Frost). In the Spring 32° row, if you have "Apr 15" under the 50% column, that means you have a 50% chance of seeing frost on or before April 15th.
Example 2 (First Freeze). In the Fall 24° row, if you have "Dec 1" under the 90% column, that means you have a 90% chance of seeing 24 degrees on or after December 1st.
Empty cells indicate you have a less than 10% chance of ever seeing that temperature.