First and last freeze/frost dates for Friday Harbor, WA ,United StatesFirst and last freeze/frost dates for:
Detailed station data* follows:
Olga 2 Se, WA (San Juan county):
|Spring 32°||Apr 14||Apr 3||Mar 27||Mar 20||Mar 14||Mar 8||Mar 1||Feb 21||Feb 11|
|Spring 28°||Mar 4||Feb 23||Feb 16||Feb 10||Feb 4||Jan 29||Jan 22||Jan 14||Dec 29|
|Spring 24°||Feb 18||Feb 6||Jan 28||Jan 20||Jan 13||Jan 5||Dec 27||Dec 13|
|Fall 32°||Oct 27||Nov 3||Nov 8||Nov 13||Nov 18||Nov 22||Nov 27||Dec 4||Dec 12|
|Fall 28°||Nov 12||Nov 21||Nov 28||Dec 6||Dec 11||Dec 17||Dec 24||Jan 1||Jan 17|
|Fall 24°||Nov 21||Dec 5||Dec 15||Dec 23||Jan 1||Jan 10||Jan 21||Feb 11|
Anacortes, WA (Skagit county):
|Spring 32°||Apr 7||Mar 30||Mar 24||Mar 19||Mar 14||Mar 9||Mar 4||Feb 26||Feb 18|
|Spring 28°||Mar 12||Mar 3||Feb 23||Feb 17||Feb 12||Feb 6||Jan 31||Jan 24||Jan 14|
|Spring 24°||Feb 28||Feb 18||Feb 10||Feb 4||Jan 29||Jan 23||Jan 16||Jan 7||Dec 22|
|Fall 32°||Oct 23||Oct 31||Nov 5||Nov 10||Nov 14||Nov 19||Nov 24||Nov 29||Dec 8|
|Fall 28°||Oct 31||Nov 10||Nov 18||Nov 25||Dec 2||Dec 8||Dec 15||Dec 23||Jan 3|
|Fall 24°||Nov 20||Dec 2||Dec 10||Dec 17||Dec 24||Dec 31||Jan 7||Jan 17||Feb 4|
Port Angeles, WA (Clallam county):
|Spring 32°||May 6||Apr 23||Apr 14||Apr 7||Mar 30||Mar 23||Mar 15||Mar 6||Feb 21|
|Spring 28°||Apr 3||Mar 20||Mar 9||Feb 28||Feb 19||Feb 11||Feb 1||Jan 21||Jan 3|
|Spring 24°||Feb 24||Feb 15||Feb 8||Feb 2||Jan 27||Jan 20||Jan 13||Jan 1|
|Fall 32°||Oct 18||Oct 26||Oct 31||Nov 5||Nov 10||Nov 14||Nov 19||Nov 25||Dec 5|
|Fall 28°||Nov 7||Nov 17||Nov 24||Nov 29||Dec 6||Dec 12||Dec 18||Dec 25||Jan 5|
|Fall 24°||Nov 23||Dec 6||Dec 15||Dec 23||Dec 31||Jan 9||Jan 19||Feb 8|
* 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.