When is the last frost in Jackson, MS?

The average last spring frost (50% probability of 32°F) in Jackson is around March 6, based on NOAA/NCEI 1991–2020 normals at the Jackson Hawkins Fld, MS station (3.9 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 Jackson?

The average first fall frost in Jackson, MS is around November 19, giving roughly a 258-day frost-free growing season.

What planting zone is Jackson, MS?

Jackson is in USDA plant hardiness zone 8b (average annual extreme minimum temperature 15 to 20°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Jackson?

In Jackson, MS the warmest month is August (avg high 92.2°F) and the coldest is January (avg low 36.6°F). It averages about 57.3″ of precipitation a year and 1″ of snow.

Home › Mississippi › Jackson

Jackson, MS Planting Calendar & Frost Dates

USDA hardiness zone 8b · ZIP 39201 · elevation 90′ · NOAA & USDA data

Jackson is in USDA hardiness zone 8b (winters can dip to 15 to 20°F), with a growing season of about 258 days between the average last spring frost (March 6) and first fall frost (November 19). The warmest month is August (avg high 92.2°F); the coldest is January (avg low 36.6°F). It averages 57.3″ of precipitation a year and 1″ of snow, mostly mid-winter. 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 15 to 20°F

Last spring frost

March 6

avg (50% prob, 32°F)

First fall frost

November 19

avg (50% prob, 32°F)

Growing season

258 days

frost-free window

Warmest month

August

avg high 92.2°F

Month-by-month typical weather in Jackson

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Jackson Intl Ap, MS (6.6 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	57.4	36.6	47	5.4	0.2
February	62	39.8	50.9	5.1	0.2
March	69.4	46.4	57.9	5.7	0.1
April	76.5	53.3	64.9	5.8	0
May	83.8	62.1	72.9	4.4	0
June	89.9	69.4	79.6	4.4	0
July	92.1	72.2	82.1	5	0
August	92.2	71.5	81.8	4.7	0
September	87.8	66	76.9	3.5	0
October	78.3	54.2	66.2	3.8	0
November	67.2	43.6	55.4	4.4	0
December	59.6	38.7	49.1	5.1	0.5

What to plant when in Jackson

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: January 23 · Transplant out: March 13
Peppers	warm	Start seeds indoors: January 9 · Transplant out: March 20
Cucumbers	warm	Direct sow: March 13
Zucchini / squash	warm	Direct sow: March 13
Bush beans	warm	Direct sow: March 13
Sweet corn	warm	Direct sow: March 13
Basil	warm	Transplant out: March 13
Peas	cool	Sow (spring): January 30 · Sow (fall): September 24
Spinach	cool	Sow (spring): January 23 · Sow (fall): September 24
Lettuce	cool	Sow (spring): February 6 · Sow (fall): September 24
Kale	cool	Transplant (spring): February 13 · Sow (fall): September 10
Broccoli	cool	Transplant (spring): February 20
Carrots	cool	Sow (spring): February 13 · Sow (fall): September 10
Onions	cool	Transplant (spring): February 6
Potatoes	cool	Plant seed potatoes: February 20
Radishes	cool	Sow (spring): February 6 · Sow (fall): October 8

Dates are computed from Jackson'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

Hattiesburg, MS Meridian, MS Gulfport, MS Biloxi, 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 — Jackson Hawkins Fld, MS, 3.9 mi (confidence: high). Monthly weather normals: Jackson Intl Ap, MS, 6.6 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.