Frost dates / Mississippi / Gulfport

Frost dates in Gulfport, MS

The station on this page is GULFPORT - BILOXI AP, MS US (USW00093874), 0.9 miles from the city point. Population in the Census 2024 estimate is 74,621.

Zone 9aUSDA average annual extreme minimum 20°F to 25°F, from ZIP 39507 (2.4 miles from the city point used on this page).

Median last 32°F is February 23. Median first 32°F is December 3. The 50% growing-season length is 287 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Last 32°F in spring

NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.

Probability	Date	How to read it
90%	January 25	Earlier date. A last 32°F on or after this day is common.
50%	February 23	Median.
10%	March 16	Later date. A last 32°F on or after this day is uncommon.

First 32°F in fall

NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.

Probability	Date	How to read it
10%	November 12	Earlier date. A first 32°F on or before this day is uncommon.
50%	December 3	Median.
90%	January 5	Later date. A first 32°F on or before this day is common.

32°F growing-season length

Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.

Probability the season is at least this long	Days
10%	323
50%	287
90%	255

28°F threshold

	10%	50%	90%
Last, on or after	March 5	February 1	January 5
First, on or before	November 28	December 31	January 23
Season at least	359 days	323 days	286 days

36°F threshold

	10%	50%	90%
Last, on or after	March 30	March 9	February 16
First, on or before	November 3	November 18	December 7
Season at least	284 days	255 days	228 days

Station GULFPORT - BILOXI AP, MS US (USW00093874). Completeness flag R, 21 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 99.5%. Freeze dates are conditional on that threshold occurring. Elevation 12.8 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Check a crop against this station

Gulfport, MS

Zone 9aAverage annual extreme minimum 20°F to 25°F

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Mississippi. Nearest qualified station: GULFPORT - BILOXI AP, MS US (USW00093874), 0.9 miles. Median last 32°F February 23. Median first 32°F December 3. The 50% growing-season length is 287 days.

Open the ZIP page

32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	March 16	February 23	January 25
First 32°F on or before	November 12	December 3	January 5

Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.

A wall calendar surrounded by vegetables, herbs, seed packets, and watering cans.

Planting calendar

Frost dates for Mississippi are above. Planting windows appear for states with a cited extension guide. The fall and seed tools use the numbers you enter and the station dates.

Date checks use your device’s calendar and appear after the page loads.