Marion, South Carolina Spring and Fall Freeze Statistics

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Marion's average date for the last spring freeze is March 30

Spring freeze statistics sorted by probability

Probability	Date
1%	Feb 22
5%	Mar 5
10%	Mar 10
25%	Mar 19
50%	Mar 30
75%	Apr 9
90%	Apr 18
95%	Apr 23
99%	May 4

Earliest last spring freeze: Feb 26, 1945

Latest last spring freeze: May 2, 1963

Spring freeze statistics sorted by date

Date	Probability
Jan 25	0.0%
Feb 1	0.0%
Feb 5	0.0%
Feb 10	0.1%
Feb 15	0.2%
Feb 20	0.6%
Feb 25	1.4%
Mar 1	2.7%
Mar 5	4.8%
Mar 10	9.2%
Mar 15	15.9%
Mar 20	25.3%
Mar 25	36.9%
Mar 30	49.9%
Apr 5	65.4%
Apr 10	76.7%
Apr 15	85.6%
Apr 20	91.8%
Apr 25	95.8%
Apr 30	98.0%
May 5	99.2%
May 10	99.7%

Since 1950, Marion has 19 years of missing climate data. This makes it difficult to determine a statistically accurate change in spring freeze dates.

Marion's average date for the first fall freeze is November 1

Fall freeze statistics sorted by probability

Probability	Date
1%	Oct 4
5%	Oct 12
10%	Oct 17
25%	Oct 24
50%	Nov 1
75%	Nov 9
90%	Nov 16
95%	Nov 20
99%	Nov 28

Earliest first fall freeze: October 3, 1974

Latest first fall freeze: December 11, 1948

Fall freeze statistics sorted by date

Date	Probability
Oct 1	0.4%
Oct 5	1.0%
Oct 10	2.9%
Oct 15	7.1%
Oct 20	14.7%
Oct 25	26.6%
Nov 1	48.7%
Nov 5	62.0%
Nov 10	76.7%
Nov 15	87.6%
Nov 20	94.3%
Nov 25	97.7%
Nov 30	99.2%
Dec 5	99.8%
Dec 10	99.9%
Dec 15	100.0%
Dec 20	100.0%
Dec 25	100.0%
Dec 30	100.0%

Since 1950, Marion has 19 years of missing climate data. This makes it difficult to determine a statistically accurate change in fall freeze dates.

Marion's average growing season length is 215 days

Growing season statistics sorted by probability

Probability	Days
1%	259
5%	246
10%	239
25%	227
50%	215
75%	202
90%	190
95%	183
99%	170

Shortest growing season: 175 days in 1974

Longest growing season: 267 days in 2009

Growing season statistics sorted by days

Days	Probability
160	99.8%
170	99.0%
180	96.5%
190	90.1%
200	77.8%
210	59.6%
220	38.9%
225	29.3%
230	21.0%
235	14.3%
240	9.2%
245	5.6%
250	3.2%
255	1.7%
260	0.9%
270	0.2%
280	0.0%
290	0.0%
300	0.0%

Since 1950, Marion has 19 years of missing climate data. This makes it difficult to determine a statistically accurate change in growing season length.

Research and Page Author: Tim Armstrong
Last Updated: March 6, 2021

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