Weather – Frost update 2020

Nov14
by catz on November 14, 2020 at 11:47 and modified on November 14, 2020. at 11:48
Posted In: weather

We maintain and publish date and growing season information based on the first and last light frosts (-1C) and the first and last heavy frost (-3C) of each season.
This is the latest update showing the 2018 growing season.
It was much shorter than average this year due to late light frosts into June, only the 2nd time in our recorded history, and early light frosts in September.
The same for the heavy plant killing frosts, both later in the spring and earlier in the fall, than the avergage.

	StarlightCascade Gardens & Observatory  Weather Station					Yarker Ontario Canada		
	LIGHT  FROST (-1C)					HEAVY FROST (-3C)		
Year		#days	#weeks		Year		#days	#weeks
2003	Apr30-Oct23	176	25		2003	Apr24-Nov08	198	28
2004	May08-Oct11	156	22		2004	Apr16-Nov03	201	29
2005	May17-Oct20	156	22		2005	Mar13-Oct21	222	32
2006		no data	no data		2006		no data	no data
2007	May18-Oct12	147	21		2007	May13-Oct13	153	22
2008	May06-Oct06	154	22		2008	Apr30-Oct07	160	23
2009	May13-Sep19	129	18		2009	Apr17-Oct12	179	26
2010	Jun13-Oct10	119	17		2010	Jun11-Nov01	143	20
2011	Apr22-Sep17	149	21		2011	Apr22-Oct06	167	24
2012	Apr30-Oct08	162	23		2012	Apr30-Oct12	165	24
2013	May14-Sep16	125	18		2013	May14-Oct29	168	24
2014	May18-Sep19	124	18		2014	Apr25-Sep19	147	21
2015	May23-Oct10	140	20		2015	May23-Oct17	147	21
2016	May18-Sep25	130	19		2016	May10-Sep25	138	20
2017	May11-Oct01	143	20		2017	May10-Oct17	160	23
2018	May12-Oct05	146	21		2018	Apr23-Oct14	174	25
2019	Apr29-Oct05	159	23		2019	Apr29-Oct05	159	23
2020	Jun01-Sep15	107	15		2020	May14-Sep19	128	18

min		107	15		     min		128	18
average		142	20		     average		165	24
median		146	21		     median		160	23
max		176	25		     max		222	32
stddev		18	3		     stddev		24	4