First and last freeze/frost dates for Manassas, VA ,United StatesFirst and last freeze/frost dates for:
Detailed station data* follows:
Washington Dulles Wso, VA (Loudoun county):
|Spring 32°||May 9||May 4||Apr 29||Apr 26||Apr 23||Apr 19||Apr 16||Apr 12||Apr 6|
|Spring 28°||Apr 20||Apr 16||Apr 13||Apr 10||Apr 7||Apr 5||Apr 2||Mar 30||Mar 26|
|Spring 24°||Apr 12||Apr 7||Apr 4||Apr 1||Mar 30||Mar 27||Mar 24||Mar 21||Mar 16|
|Fall 32°||Sep 29||Oct 4||Oct 7||Oct 10||Oct 13||Oct 16||Oct 18||Oct 22||Oct 26|
|Fall 28°||Oct 11||Oct 16||Oct 20||Oct 23||Oct 26||Oct 29||Oct 31||Nov 4||Nov 9|
|Fall 24°||Oct 24||Oct 29||Oct 31||Nov 3||Nov 6||Nov 9||Nov 12||Nov 16||Nov 21|
Mt Weather, VA (Loudoun county):
|Spring 32°||May 7||May 1||Apr 28||Apr 25||Apr 22||Apr 19||Apr 15||Apr 12||Apr 7|
|Spring 28°||Apr 24||Apr 20||Apr 17||Apr 14||Apr 12||Apr 10||Apr 7||Apr 5||Apr 1|
|Spring 24°||Apr 17||Apr 12||Apr 8||Apr 5||Apr 2||Mar 31||Mar 28||Mar 24||Mar 19|
|Fall 32°||Oct 7||Oct 13||Oct 17||Oct 20||Oct 23||Oct 26||Oct 30||Nov 2||Nov 7|
|Fall 28°||Oct 20||Oct 25||Oct 30||Nov 1||Nov 4||Nov 8||Nov 11||Nov 15||Nov 21|
|Fall 24°||Oct 30||Nov 4||Nov 9||Nov 12||Nov 16||Nov 20||Nov 23||Nov 28||Dec 5|
Lincoln, VA (Loudoun county):
|Spring 32°||May 1||Apr 27||Apr 23||Apr 21||Apr 18||Apr 15||Apr 13||Apr 9||Apr 5|
|Spring 28°||Apr 18||Apr 13||Apr 10||Apr 8||Apr 5||Apr 3||Mar 31||Mar 28||Mar 24|
|Spring 24°||Apr 8||Apr 4||Mar 31||Mar 28||Mar 25||Mar 22||Mar 20||Mar 16||Mar 11|
|Fall 32°||Oct 6||Oct 11||Oct 15||Oct 18||Oct 21||Oct 24||Oct 27||Oct 30||Nov 3|
|Fall 28°||Oct 17||Oct 22||Oct 26||Oct 29||Oct 31||Nov 2||Nov 5||Nov 9||Nov 14|
|Fall 24°||Oct 31||Nov 5||Nov 9||Nov 12||Nov 16||Nov 19||Nov 22||Nov 26||Dec 3|
* 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.