When is the last frost in Biloxi, MS?

The average last spring frost (50% probability of 32°F) in Biloxi is around February 12, based on NOAA/NCEI 1991–2020 normals at the Biloxi, MS station (6.5 mi away). Half of years it falls outside that date, so wait 1–2 weeks past it before setting out frost-tender plants.

When is the first fall frost in Biloxi?

The average first fall frost in Biloxi, MS is around December 14, giving roughly a 301-day frost-free growing season.

What planting zone is Biloxi, MS?

Biloxi is in USDA plant hardiness zone 9a (average annual extreme minimum temperature 20 to 25°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Biloxi?

In Biloxi, MS the warmest month is August (avg high 89.9°F) and the coldest is January (avg low 43.6°F). It averages about 66.8″ of precipitation a year.

Home › Mississippi › Biloxi

Biloxi, MS Planting Calendar & Frost Dates

USDA hardiness zone 9a · ZIP 39530 · elevation 3′ · NOAA & USDA data

Biloxi is in USDA hardiness zone 9a (winters can dip to 20 to 25°F), with a growing season of about 301 days between the average last spring frost (February 12) and first fall frost (December 14). The warmest month is August (avg high 89.9°F); the coldest is January (avg low 43.6°F). It averages 66.8″ of precipitation a year. Start cool-season crops several weeks before the last frost; wait until after it for tomatoes, peppers and other tender crops.

Hardiness zone

min temp 20 to 25°F

Last spring frost

February 12

avg (50% prob, 32°F)

First fall frost

December 14

avg (50% prob, 32°F)

Growing season

301 days

frost-free window

Warmest month

August

avg high 89.9°F

Month-by-month typical weather in Biloxi

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Biloxi, MS (6.5 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	59.8	43.6	51.7	5.4	0
February	63.2	47.3	55.2	4.4	0
March	69.3	53.4	61.3	5.7	0.1
April	75.8	60.4	68.1	5.7	0
May	82.8	68.3	75.6	5.2	0
June	88	73.8	80.9	7.1	0
July	89.7	75.3	82.5	8.1	0
August	89.9	75.1	82.5	6.9	0
September	86.9	71.5	79.2	5.2	0
October	79.1	61.9	70.5	3.7	0
November	69.2	51.2	60.2	4.4	0
December	62.2	45.9	54	5	0

What to plant when in Biloxi

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: January 1 · Transplant out: February 19
Peppers	warm	Start seeds indoors: December 18 · Transplant out: February 26
Cucumbers	warm	Direct sow: February 19
Zucchini / squash	warm	Direct sow: February 19
Bush beans	warm	Direct sow: February 19
Sweet corn	warm	Direct sow: February 19
Basil	warm	Transplant out: February 19
Peas	cool	Sow (spring): January 8 · Sow (fall): October 19
Spinach	cool	Sow (spring): January 1 · Sow (fall): October 19
Lettuce	cool	Sow (spring): January 15 · Sow (fall): October 19
Kale	cool	Transplant (spring): January 22 · Sow (fall): October 5
Broccoli	cool	Transplant (spring): January 29
Carrots	cool	Sow (spring): January 22 · Sow (fall): October 5
Onions	cool	Transplant (spring): January 15
Potatoes	cool	Plant seed potatoes: January 29
Radishes	cool	Sow (spring): January 15 · Sow (fall): November 2

Dates are computed from Biloxi's average frost dates using standard cool-/warm-season timing. They're a starting point — a cold spring, a warm microclimate, or a fast-maturing variety can shift them by a week or two.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in Mississippi

Gulfport, MS Hattiesburg, MS Meridian, MS Jackson, MS Southaven, MS

Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — Biloxi, MS, 6.5 mi (confidence: high). Monthly weather normals: Biloxi, MS, 6.5 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.