When is the last frost in Jonesboro, AR?

The average last spring frost (50% probability of 32°F) in Jonesboro is around March 23, based on NOAA/NCEI 1991–2020 normals at the Jonesboro Muni Ap, AR station (3.8 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 Jonesboro?

The average first fall frost in Jonesboro, AR is around November 9, giving roughly a 230-day frost-free growing season.

What planting zone is Jonesboro, AR?

Jonesboro is in USDA plant hardiness zone 8a (average annual extreme minimum temperature 10 to 15°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Jonesboro?

In Jonesboro, AR the warmest month is July (avg high 89.7°F) and the coldest is January (avg low 26.7°F). It averages about 52″ of precipitation a year and 3.9″ of snow.

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Jonesboro, AR Planting Calendar & Frost Dates

USDA hardiness zone 8a · ZIP 72401 · elevation 95′ · NOAA & USDA data

Jonesboro is in USDA hardiness zone 8a (winters can dip to 10 to 15°F), with a growing season of about 230 days between the average last spring frost (March 23) and first fall frost (November 9). The warmest month is July (avg high 89.7°F); the coldest is January (avg low 26.7°F). It averages 52″ of precipitation a year and 3.9″ 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 10 to 15°F

Last spring frost

March 23

avg (50% prob, 32°F)

First fall frost

November 9

avg (50% prob, 32°F)

Growing season

230 days

frost-free window

Warmest month

July

avg high 89.7°F

Month-by-month typical weather in Jonesboro

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Jonesboro 2 Ne, AR (4.7 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	45.6	26.7	36.1	3.9	1
February	50.5	30.2	40.4	4.1	1.2
March	60	38	49	5.2	1.2
April	70.7	47.7	59.2	5.4	0
May	79.2	57.2	68.2	5.7	0
June	87.2	66.1	76.6	3.4	0
July	89.7	69.6	79.7	3.6	0
August	89	68	78.5	3.7	0
September	83	60	71.5	3.5	0
October	72.4	48.1	60.3	4	0
November	58.8	37.2	48	4.9	0.1
December	48.6	30.1	39.3	4.7	0.4

What to plant when in Jonesboro

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: February 9 · Transplant out: March 30
Peppers	warm	Start seeds indoors: January 26 · Transplant out: April 6
Cucumbers	warm	Direct sow: March 30
Zucchini / squash	warm	Direct sow: March 30
Bush beans	warm	Direct sow: March 30
Sweet corn	warm	Direct sow: March 30
Basil	warm	Transplant out: March 30
Peas	cool	Sow (spring): February 16 · Sow (fall): September 14
Spinach	cool	Sow (spring): February 9 · Sow (fall): September 14
Lettuce	cool	Sow (spring): February 23 · Sow (fall): September 14
Kale	cool	Transplant (spring): March 2 · Sow (fall): August 31
Broccoli	cool	Transplant (spring): March 9
Carrots	cool	Sow (spring): March 2 · Sow (fall): August 31
Onions	cool	Transplant (spring): February 23
Potatoes	cool	Plant seed potatoes: March 9
Radishes	cool	Sow (spring): February 23 · Sow (fall): September 28

Dates are computed from Jonesboro'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 Arkansas

Conway, AR North Little Rock, AR Little Rock, AR Pine Bluff, AR Rogers, AR Fayetteville, AR Springdale, AR Bentonville, AR

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 — Jonesboro Muni Ap, AR, 3.8 mi (confidence: high). Monthly weather normals: Jonesboro 2 Ne, AR, 4.7 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.