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Last and first frost dates in Mobile

United States

In Mobile the last spring frost usually comes around 24 January and the first autumn frost around 15 December, which leaves about 325 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 31 January to 25 August.

Last spring frostaround 24 January
First autumn frostaround 15 December
Frost-free days325 days

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When is the last frost in Mobile?

The last frost in Mobile usually comes around 24 January: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 3 January, while corn waits until 31 January. The first autumn frost follows around 15 December, about 325 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha1 December – 6 September10 January – 16 October31 January – 16 October
Ageratumfrom 15 November—from 31 January
Arugula——sow 3 January – 10 November
Basil27 December – 13 October3 February – 20 November24 February – 20 November
Beet——sow 3 January – 16 October
Bell Pepper5 December – 26 June3 February – 25 August24 February – 25 August
Black-eyed Susanfrom 9 November—from 31 January
Bok Choy6 December – 24 October10 January – 28 November31 January – 28 November
Borage——sow 31 January – 21 October
Broad bean——sow 3 January – 6 September
Broccoli——sow 3 January – 30 August
Brussels Sprouts29 October – 28 July13 December – 11 September3 January – 11 September
Busy Lizziefrom 8 November—from 31 January
Cabbage——sow 3 January – 7 August
Calendula——sow from 3 January
Carrot——sow 3 January – 22 September
Cauliflower1 November – 30 August13 December – 11 October3 January – 11 October
Celeriac25 October – 27 June10 January – 12 September31 January – 12 September
Celery25 October – 7 July10 January – 22 September31 January – 22 September
Celosiafrom 28 Novemberfrom 12 Januaryfrom 2 February
Chamomile——sow 3 January – 11 October
Chayote14 October – 20 June10 January – 16 September31 January – 16 September
Chickpea——sow 3 January – 27 August
Chicory18 November – 21 September—3 January – 16 October
Chili Pepper5 December – 2 August3 February – 1 October24 February – 1 October
China asterfrom 13 Decemberfrom 3 Februaryfrom 24 February
Chives——sow 3 January – 2 October
Cilantro——sow 3 January – 12 October
Corn——sow 31 January – 27 August
Corn poppy——sow from 3 January
Cosmosfrom 28 Novemberfrom 12 Januaryfrom 2 February
Cucumber6 January – 2 September3 February – 30 September24 February – 30 September
Daikon——sow 3 January – 9 October
Delphiniumfrom 15 October—from 3 January
Dill——sow 3 January – 22 October
Edging lobeliafrom 8 November—from 31 January
Eggplant5 December – 26 June3 February – 25 August24 February – 25 August
Florence fennel26 November – 6 September10 January – 21 October31 January – 21 October
Foxglovefrom 27 September—from 3 January
Garden sorrel——sow 3 January – 10 October
Green Beans——sow 2 February – 4 September
Hollyhock——sow from 3 January
Hyssop——sow 3 January – 2 September
Kale——sow 3 January – 4 October
Kiwano9 December – 9 September10 January – 11 October31 January – 11 October
Kohlrabi——sow 3 January – 14 October
Leek4 October – 18 June13 December – 27 August3 January – 27 August
Lemon balm——sow 3 January – 6 October
Lettuce——sow 3 January – 19 October
Lisianthusfrom 17 Septemberfrom 13 Decemberfrom 3 January
Lovage——sow from 3 January
Luffa23 December – 4 July3 February – 15 August24 February – 15 August
Marigoldfrom 29 Novemberfrom 10 Januaryfrom 31 January
Marjoram5 December – 21 September—24 February – 20 November
Melon6 January – 20 August3 February – 17 September24 February – 17 September
Microgreens——sow 2 February – 1 December
Moringa10 January – 26 September6 March – 20 November27 March – 20 November
Moss rosefrom 15 November—from 31 January
Mustard greens——sow 3 January – 31 October
Napa cabbage8 December – 1 October10 January – 3 November31 January – 3 November
Nasturtiumfrom 3 Decemberfrom 10 Januaryfrom 31 January
Okra23 December – 14 September3 February – 26 October24 February – 26 October
Oregano14 October – 11 September13 December – 10 November3 January – 10 November
Pansyfrom 18 Octoberfrom 13 Decemberfrom 3 January
Parsley——sow 3 January – 30 September
Parsnip——sow 3 January – 19 August
Peanut28 December – 10 August3 February – 16 September24 February – 16 September
Peas——sow 3 January – 2 October
Petuniafrom 2 Decemberfrom 3 Februaryfrom 24 February
Physalis26 November – 7 August10 January – 21 September31 January – 21 September
Pumpkin23 December – 9 July3 February – 20 August24 February – 20 August
Purple coneflowerfrom 12 October—from 3 January
Radish——sow 3 January – 15 November
Sage25 October – 7 September13 December – 26 October3 January – 26 October
Scarlet sagefrom 19 November—from 31 January
Snapdragonfrom 9 Octoberfrom 13 Decemberfrom 3 January
Soybean——sow 24 February – 26 September
Spinach——sow 3 January – 21 October
Stevia22 November – 29 July10 January – 16 September31 January – 16 September
Stock——sow from 3 January
Sunflower——sow from 2 February
Sweet alyssum——sow from 3 January
Sweet Corn19 December – 21 September10 January – 13 October31 January – 13 October
Sweet peafrom 1 Novemberfrom 13 Decemberfrom 3 January
Sweet William——sow from 3 January
Swiss Chard——sow 3 January – 16 October
Thyme——sow 3 January – 27 August
Tomato19 November – 4 July10 January – 25 August31 January – 25 August
Turnip——sow 3 January – 18 October
Watercress——sow 3 January – 29 October
Watermelon6 January – 8 August3 February – 5 September24 February – 5 September
Zinniafrom 30 Januaryfrom 6 Marchfrom 27 March
Zucchini13 January – 7 September3 February – 28 September24 February – 28 September

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

When the soil warms up in Mobile

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo).

SoilDateAgainst the last spring frost
5 °Calready in the first week of January—
10 °Calready in the first week of January—
15 °C28 January4 days later
18 °C24 February31 days later

Frost dates near Mobile

Of the nearest cities on our list, the last spring frost ends earliest in New Orleans (22 January) and latest in Montgomery (1 March).

CityDistanceLast spring frostFirst autumn frost
Pensacola89 km26 January19 December
Gulfport99 km7 February24 November
New Orleans206 km22 January15 December
Montgomery255 km1 March29 November
Jackson268 km24 February28 November

Seeds, seedlings and markets in Mobile

Within 15 km of Mobile OpenStreetMap lists 1 garden centre, 2 plant nurseries, 2 markets and 1 farm shop (collected 28 October 2026). The nearest garden centre to the city centre is Stokley Garden Express Midtown, 3 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Mobile

Frosts in Mobile usually come from about 15 December to about 24 January. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in Mobile by month

Average weather in Mobile over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: March–November (21.6–32.1 °C). Months that average 30 °C or more by day: June–September (30.6–32.1 °C). No month averages below 0 °C at night; the coldest nights, in January, average 6.8 °C. About 1617 mm of rain falls in a year, on 151 days; August is the wettest month (178 mm) and November the driest (75 mm).

MonthDay, °CNight, °CRain, mmRainy days
January15.96.814910
February19.410.410510
March221312612
April24.615.312210
May28.519.715712
June31.123.117319
July31.724.516522
August32.124.417820
September30.622.212111
October27.117.5907
November21.612757
December189.315611

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).

Planted in autumn

CropWhen to plant
Bearded Irisby 15 November
Crocusby 15 November
Daffodilby 15 November
Garlicby 15 November
Grape hyacinthby 15 November
Helleboreby 15 November
Hyacinthby 15 November
Lilyby 15 November
Ornamental onionby 15 November
Peonyby 15 November
Saffronby 15 November
Snowdropby 15 November
Tulipby 15 November
Wild garlicby 15 November

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).