NWS Wilmington, NC

Weather Forecast Office

Marion, South Carolina Spring and Fall Freeze Statistics

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