When is the last frost in Jackson, TN?

The average last spring frost (50% probability of 32°F) in Jackson is around April 2, based on NOAA/NCEI 1991–2020 normals at the Jackson Exp Stn, TN station (2.3 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, TN is around October 29, giving roughly a 207-day frost-free growing season.

What planting zone is Jackson, TN?

Jackson is in USDA plant hardiness zone 7b (average annual extreme minimum temperature 5 to 10°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Jackson?

In Jackson, TN the warmest month is July (avg high 90.6°F) and the coldest is January (avg low 27.4°F). It averages about 56.9″ of precipitation a year and 2.7″ of snow.

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Jackson, TN Planting Calendar & Frost Dates

USDA hardiness zone 7b · ZIP 38301 · elevation 122′ · NOAA & USDA data

Jackson is in USDA hardiness zone 7b (winters can dip to 5 to 10°F), with a growing season of about 207 days between the average last spring frost (April 2) and first fall frost (October 29). The warmest month is July (avg high 90.6°F); the coldest is January (avg low 27.4°F). It averages 56.9″ of precipitation a year and 2.7″ 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 5 to 10°F

Last spring frost

April 2

avg (50% prob, 32°F)

First fall frost

October 29

avg (50% prob, 32°F)

Growing season

207 days

frost-free window

Warmest month

July

avg high 90.6°F

Month-by-month typical weather in Jackson

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Jackson Exp Stn, TN (2.3 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	48.5	27.4	37.9	4.3	1.1
February	53.1	30.4	41.7	4.7	0.9
March	62.3	38.8	50.6	5.8	0.4
April	72.5	47.8	60.1	5.5	0.1
May	80.2	57.9	69	5.3	0
June	87.5	65.9	76.7	5.1	0
July	90.6	69.3	80	5	0
August	90.3	67.4	78.9	3.6	0
September	84.8	60	72.4	4.1	0
October	74.2	47.6	60.9	4	0
November	61.4	37	49.2	4.5	0
December	51.7	30.9	41.3	5.3	0.2

What to plant when in Jackson

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: February 19 · Transplant out: April 9
Peppers	warm	Start seeds indoors: February 5 · Transplant out: April 16
Cucumbers	warm	Direct sow: April 9
Zucchini / squash	warm	Direct sow: April 9
Bush beans	warm	Direct sow: April 9
Sweet corn	warm	Direct sow: April 9
Basil	warm	Transplant out: April 9
Peas	cool	Sow (spring): February 26 · Sow (fall): September 3
Spinach	cool	Sow (spring): February 19 · Sow (fall): September 3
Lettuce	cool	Sow (spring): March 5 · Sow (fall): September 3
Kale	cool	Transplant (spring): March 12 · Sow (fall): August 20
Broccoli	cool	Transplant (spring): March 19
Carrots	cool	Sow (spring): March 12 · Sow (fall): August 20
Onions	cool	Transplant (spring): March 5
Potatoes	cool	Plant seed potatoes: March 19
Radishes	cool	Sow (spring): March 5 · Sow (fall): September 17

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 Tennessee

Collierville, TN Germantown, TN Memphis, TN Clarksville, TN Franklin, TN Brentwood, TN Nashville, TN Smyrna, TN

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 Exp Stn, TN, 2.3 mi (confidence: high). Monthly weather normals: Jackson Exp Stn, TN, 2.3 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.