When is the last frost in Alexandria, LA?

The average last spring frost (50% probability of 32°F) in Alexandria is around March 3, based on NOAA/NCEI 1991–2020 normals at the Alexandria 5 Sse, LA station (2 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 Alexandria?

The average first fall frost in Alexandria, LA is around November 22, giving roughly a 263-day frost-free growing season.

What planting zone is Alexandria, LA?

Alexandria 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 Alexandria?

In Alexandria, LA the warmest month is August (avg high 92.9°F) and the coldest is January (avg low 38.6°F). It averages about 57.5″ of precipitation a year.

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Alexandria, LA Planting Calendar & Frost Dates

USDA hardiness zone 9a · ZIP 71301 · elevation 26′ · NOAA & USDA data

Alexandria is in USDA hardiness zone 9a (winters can dip to 20 to 25°F), with a growing season of about 263 days between the average last spring frost (March 3) and first fall frost (November 22). The warmest month is August (avg high 92.9°F); the coldest is January (avg low 38.6°F). It averages 57.5″ 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

March 3

avg (50% prob, 32°F)

First fall frost

November 22

avg (50% prob, 32°F)

Growing season

263 days

frost-free window

Warmest month

August

avg high 92.9°F

Month-by-month typical weather in Alexandria

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Alexandria 5 Sse, LA (2.1 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	59.3	38.6	48.9	5.7	0
February	63.5	42	52.7	5.2	0.1
March	70.7	48.8	59.7	4.8	0
April	77.5	55.2	66.3	5.1	0
May	84.7	64	74.3	4.7	0
June	90.1	70.7	80.4	5	0
July	92.3	73	82.7	3.6	0
August	92.9	72.6	82.7	4.2	0
September	88.2	67.8	78	4.2	0
October	79.8	55.9	67.9	4.5	0
November	69.1	46.1	57.6	5.1	0
December	61.1	40.1	50.6	5.6	0

What to plant when in Alexandria

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: January 20 · Transplant out: March 10
Peppers	warm	Start seeds indoors: January 6 · Transplant out: March 17
Cucumbers	warm	Direct sow: March 10
Zucchini / squash	warm	Direct sow: March 10
Bush beans	warm	Direct sow: March 10
Sweet corn	warm	Direct sow: March 10
Basil	warm	Transplant out: March 10
Peas	cool	Sow (spring): January 27 · Sow (fall): September 27
Spinach	cool	Sow (spring): January 20 · Sow (fall): September 27
Lettuce	cool	Sow (spring): February 3 · Sow (fall): September 27
Kale	cool	Transplant (spring): February 10 · Sow (fall): September 13
Broccoli	cool	Transplant (spring): February 17
Carrots	cool	Sow (spring): February 10 · Sow (fall): September 13
Onions	cool	Transplant (spring): February 3
Potatoes	cool	Plant seed potatoes: February 17
Radishes	cool	Sow (spring): February 3 · Sow (fall): October 11

Dates are computed from Alexandria'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 Louisiana

Lafayette, LA Lake Charles, LA Monroe, LA Baton Rouge, LA Shreveport, LA Bossier City, LA Kenner, LA New Orleans, LA

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 — Alexandria 5 Sse, LA, 2 mi (confidence: high). Monthly weather normals: Alexandria 5 Sse, LA, 2.1 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.