Southport, North Carolina Spring and Fall Freeze Statistics

Southport's average date for the last spring freeze is March 26

Spring freeze statistics sorted by probability

Probability	Date
1%	Feb 24
5%	Mar 5
10%	Mar 9
25%	Mar 17
50%	Mar 26
75%	Apr 3
90%	Apr 11
95%	Apr 16
99%	Apr 25

Earliest last spring freeze: Feb 2, 1945

Latest last spring freeze: April 20, 1926

Spring freeze statistics sorted by date

Date	Probability
Jan 25	0.0%
Feb 1	0.0%
Feb 5	0.0%
Feb 10	0.0%
Feb 15	0.1%
Feb 20	0.4%
Feb 25	1.2%
Mar 1	2.5%
Mar 5	5.0%
Mar 10	10.4%
Mar 15	19.3%
Mar 20	31.6%
Mar 25	46.5%
Mar 30	61.8%
Apr 5	77.9%
Apr 10	87.6%
Apr 15	93.9%
Apr 20	97.4%
Apr 25	99.0%
Apr 30	99.7%
May 5	99.9%
May 10	100.0%

Since 1950, Southport has 15 years of missing climate data. This makes it difficult to determine a statistically accurate change in spring freeze dates.

Southport's average date for the first fall freeze is November 9

Fall freeze statistics sorted by probability

Probability	Date
1%	Oct 6
5%	Oct 16
10%	Oct 21
25%	Oct 30
50%	Nov 9
75%	Nov 19
90%	Nov 29
95%	Dec 4
99%	Dec 14

Earliest first fall freeze: October 10, 2000

Latest first fall freeze: January 10, 1946

Fall freeze statistics sorted by date

Date	Probability
Oct 1	0.4%
Oct 5	0.8%
Oct 10	1.9%
Oct 15	4.1%
Oct 20	8.0%
Oct 25	14.3%
Nov 1	27.5%
Nov 5	37.1%
Nov 10	50.3%
Nov 15	63.4%
Nov 20	75.1%
Nov 25	84.4%
Nov 30	91.1%
Dec 5	95.4%
Dec 10	97.8%
Dec 15	99.1%
Dec 20	99.6%
Dec 25	99.9%
Dec 30	100.0%

Since 1950, Southport has 15 years of missing climate data. This makes it difficult to determine a statistically accurate change in fall freeze dates.

Southport's average growing season length is 227 days

Growing season statistics sorted by probability

Probability	Days
1%	267
5%	256
10%	249
25%	239
50%	227
75%	216
90%	205
95%	199
99%	187

Shortest growing season: 190 days in 1962

Longest growing season: 327 days in 1945-1946

Growing season statistics sorted by days

Days	Probability
160	99.8%
170	99.3%
180	97.3%
190	92.0%
200	81.2%
210	64.4%
220	44.0%
225	34.1%
230	25.2%
235	17.7%
240	11.7%
245	7.4%
250	4.4%
255	2.5%
260	1.3%
270	0.3%
280	0.1%
290	0.0%
300	0.0%

Since 1950, Southport has 15 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 1, 2021