Southport, North Carolina Spring and Fall Freeze Statistics
|
Southport's average date for the last spring freeze is March 23
Spring freeze statistics sorted by probability
| Probability |
Date |
| 1% |
Feb 21 |
| 5% |
Mar 2 |
| 10% |
Mar 7 |
| 25% |
Mar 15 |
| 50% |
Mar 23 |
| 75% |
Apr 1 |
| 90% |
Apr 9 |
| 95% |
Apr 14 |
| 99% |
Apr 22 |
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 |
0.1% |
| Feb 15 |
0.2% |
| Feb 20 |
0.7% |
| Feb 25 |
1.9% |
| Mar 1 |
3.9% |
| Mar 5 |
7.3% |
| Mar 10 |
14.3% |
| Mar 15 |
24.8% |
| Mar 20 |
38.4% |
| Mar 25 |
53.6% |
| Mar 30 |
68.4% |
| Apr 5 |
82.7% |
| Apr 10 |
90.8% |
| Apr 15 |
95.7% |
| Apr 20 |
98.2% |
| Apr 25 |
99.4% |
| Apr 30 |
99.8% |
| May 5 |
99.9% |
| May 10 |
100.0% |
|


Since 1955, the date of Southport's last spring freeze has shifted 1.0 days earlier per decade.
|
|
Southport's average date for the first fall freeze is November 12
Fall freeze statistics sorted by probability
| Probability |
Date |
| 1% |
Oct 7 |
| 5% |
Oct 18 |
| 10% |
Oct 23 |
| 25% |
Nov 1 |
| 50% |
Nov 12 |
| 75% |
Nov 22 |
| 90% |
Dec 1 |
| 95% |
Dec 6 |
| 99% |
Dec 17 |
Earliest first fall freeze: October 10, 2000
Latest first fall freeze: January 10, 1946
|
Fall freeze statistics sorted by date
| Date |
Probability |
| Oct 1 |
0.3% |
| Oct 5 |
0.6% |
| Oct 10 |
1.5% |
| Oct 15 |
3.2% |
| Oct 20 |
6.4% |
| Oct 25 |
11.7% |
| Nov 1 |
23.3% |
| Nov 5 |
32.1% |
| Nov 10 |
44.7% |
| Nov 15 |
57.8% |
| Nov 20 |
70.1% |
| Nov 25 |
80.4% |
| Nov 30 |
88.2% |
| Dec 5 |
93.5% |
| Dec 10 |
96.8% |
| Dec 15 |
98.5% |
| Dec 20 |
99.4% |
| Dec 25 |
99.8% |
| Dec 30 |
100.0% |
|


Since 1955, the date of Southport's first fall freeze has shifted 0.9 days later per decade.
|
|
Southport's average growing season length is 232 days
Growing season statistics sorted by probability
| Probability |
Days |
| 1% |
278 |
| 5% |
264 |
| 10% |
257 |
| 25% |
245 |
| 50% |
232 |
| 75% |
219 |
| 90% |
207 |
| 95% |
200 |
| 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 |
100.0% |
| 170 |
99.9% |
| 180 |
99.6% |
| 190 |
98.5% |
| 200 |
95.1% |
| 210 |
87.4% |
| 220 |
73.6% |
| 225 |
64.6% |
| 230 |
54.7% |
| 235 |
44.5% |
| 240 |
34.7% |
| 245 |
25.8% |
| 250 |
18.2% |
| 255 |
12.2% |
| 260 |
7.8% |
| 270 |
2.7% |
| 280 |
0.7% |
| 290 |
0.2% |
| 300 |
0.0% |
|


Since 1955, the length of Southport's growing season has increased 1.8 days per decade.
|
Research and Page Author: Tim Armstrong and Vicky Oliva
Last Updated: September 13, 2026