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Last and first frost dates in Savannah

United States

In Savannah the last spring frost usually comes around 10 February and the first autumn frost around 24 December, which leaves about 317 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 17 February to 3 September.

Last spring frostaround 10 February
First autumn frostaround 24 December
Frost-free days317 days
Hardiness zone (USDA-equivalent)official USDA map: 9a

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 Savannah?

The last frost in Savannah usually comes around 10 February: 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 20 January, while corn waits until 17 February. The first autumn frost follows around 24 December, about 317 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha18 December – 15 September27 January – 25 October17 February – 25 October
Ageratumfrom 2 December—from 17 February
Arugula——sow 20 January – 19 November
Basil28 December – 22 October4 February – 29 November25 February – 29 November
Beet——sow 20 January – 25 October
Bell Pepper6 December – 5 July4 February – 3 September25 February – 3 September
Black-eyed Susanfrom 26 November—from 17 February
Bok Choy23 December – 2 November27 January – 7 December17 February – 7 December
Borage——sow 17 February – 30 October
Broad bean——sow 20 January – 15 September
Broccoli——sow 20 January – 8 September
Brussels Sprouts15 November – 6 August30 December – 20 September20 January – 20 September
Busy Lizziefrom 25 November—from 17 February
Cabbage——sow 20 January – 16 August
Calendula——sow from 20 January
Carrot——sow 20 January – 1 October
Cauliflower18 November – 8 September30 December – 20 October20 January – 20 October
Celeriac11 November – 6 July27 January – 21 September17 February – 21 September
Celery11 November – 16 July27 January – 1 October17 February – 1 October
Celosiafrom 13 Decemberfrom 27 Januaryfrom 17 February
Chamomile——sow 20 January – 20 October
Chayote31 October – 29 June27 January – 25 September17 February – 25 September
Chickpea——sow 20 January – 5 September
Chicory5 December – 30 September—20 January – 25 October
Chili Pepper6 December – 11 August4 February – 10 October25 February – 10 October
China asterfrom 14 Decemberfrom 4 Februaryfrom 25 February
Chives——sow 20 January – 11 October
Cilantro——sow 20 January – 21 October
Corn——sow 17 February – 5 September
Corn poppy——sow from 20 January
Cosmosfrom 13 Decemberfrom 27 Januaryfrom 17 February
Cucumber7 January – 11 September4 February – 9 October25 February – 9 October
Daikon——sow 20 January – 18 October
Delphiniumfrom 1 November—from 20 January
Dill——sow 20 January – 31 October
Edging lobeliafrom 25 November—from 17 February
Eggplant6 December – 5 July4 February – 3 September25 February – 3 September
Florence fennel13 December – 15 September27 January – 30 October17 February – 30 October
Foxglovefrom 14 October—from 20 January
Garden sorrel——sow 20 January – 19 October
Green Beans——sow 17 February – 13 September
Hollyhock——sow from 20 January
Hyssop——sow 20 January – 11 September
Kale——sow 20 January – 13 October
Kiwano26 December – 18 September27 January – 20 October17 February – 20 October
Kohlrabi——sow 20 January – 23 October
Leek21 October – 27 June30 December – 5 September20 January – 5 September
Lemon balm——sow 20 January – 15 October
Lettuce——sow 20 January – 28 October
Lisianthusfrom 4 Octoberfrom 30 Decemberfrom 20 January
Lovage——sow from 20 January
Luffa24 December – 13 July4 February – 24 August25 February – 24 August
Marigoldfrom 16 Decemberfrom 27 Januaryfrom 17 February
Marjoram6 December – 30 September—25 February – 29 November
Melon7 January – 29 August4 February – 26 September25 February – 26 September
Microgreens——sow 17 February – 10 December
Moringa31 December – 5 October24 February – 29 November17 March – 29 November
Moss rosefrom 2 December—from 17 February
Mustard greens——sow 20 January – 9 November
Napa cabbage25 December – 10 October27 January – 12 November17 February – 12 November
Nasturtiumfrom 20 Decemberfrom 27 Januaryfrom 17 February
Okra24 December – 23 September4 February – 4 November25 February – 4 November
Oregano31 October – 20 September30 December – 19 November20 January – 19 November
Pansyfrom 4 Novemberfrom 30 Decemberfrom 20 January
Parsley——sow 20 January – 9 October
Parsnip——sow 20 January – 28 August
Peanut29 December – 19 August4 February – 25 September25 February – 25 September
Peas——sow 20 January – 11 October
Petuniafrom 3 Decemberfrom 4 Februaryfrom 25 February
Physalis13 December – 16 August27 January – 30 September17 February – 30 September
Pumpkin24 December – 18 July4 February – 29 August25 February – 29 August
Purple coneflowerfrom 29 October—from 20 January
Radish——sow 20 January – 24 November
Sage11 November – 16 September30 December – 4 November20 January – 4 November
Scarlet sagefrom 6 December—from 17 February
Snapdragonfrom 26 Octoberfrom 30 Decemberfrom 20 January
Soybean——sow 25 February – 5 October
Spinach——sow 20 January – 30 October
Stevia9 December – 7 August27 January – 25 September17 February – 25 September
Stock——sow from 20 January
Sunflower——sow from 17 February
Sweet alyssum——sow from 20 January
Sweet Corn5 January – 30 September27 January – 22 October17 February – 22 October
Sweet peafrom 18 Novemberfrom 30 Decemberfrom 20 January
Sweet William——sow from 20 January
Swiss Chard——sow 20 January – 25 October
Thyme——sow 20 January – 5 September
Tomato6 December – 13 July27 January – 3 September17 February – 3 September
Turnip——sow 20 January – 27 October
Watercress——sow 20 January – 7 November
Watermelon7 January – 17 August4 February – 14 September25 February – 14 September
Zinniafrom 20 Januaryfrom 24 Februaryfrom 17 March
Zucchini14 January – 16 September4 February – 7 October25 February – 7 October

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.

What planting zone is Savannah?

The official USDA map (2023, 1991–2020 data) puts the centre of Savannah (ZIP 31401) in zone 9a. Zone 9a stands for an average coldest night of 20 to 25 °F (-6.7 to -3.9 °C), so perennials hardy to zone 9a or a colder zone should come through a typical winter here.

Check the official USDA map for Savannah: USDA Plant Hardiness Zone Map.

When the soil warms up in Savannah

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 °C23 January18 days earlier
18 °C25 February15 days later

Frost dates near Savannah

Of the nearest cities on our list, the last spring frost ends earliest in Gainesville (22 January) and latest in Columbia (9 March).

CityDistanceLast spring frostFirst autumn frost
Charleston135 km4 February20 December
Jacksonville202 km23 January27 December
Columbia214 km9 March29 November
Macon253 km5 March1 December
Gainesville295 km22 January24 December

Seeds, seedlings and markets in Savannah

Within 15 km of Savannah OpenStreetMap lists 1 garden centre, 1 farm-supply shop, 1 plant nursery, 1 market and 1 farm shop (collected 20 October 2026). The nearest farm supply to the city centre is Northern Tool+Equipment, 8 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Savannah

Frosts in Savannah usually come from about 24 December to about 10 February. 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 Savannah by month

Average weather in Savannah over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: March–November (20.6–31.6 °C). Months that average 30 °C or more by day: June (30.2 °C), July (31.6 °C) and August (30.4 °C). No month averages below 0 °C at night; the coldest nights, in January, average 7 °C. About 1248 mm of rain falls in a year, on 138 days; August is the wettest month (193 mm) and January the driest (70 mm).

MonthDay, °CNight, °CRain, mmRainy days
January15.47708
February18.810.2708
March21.312.5829
April24.315.7777
May27.820.19512
June30.223.411916
July31.62513819
August30.424.619322
September28.922.413514
October25.417.9907
November20.612.3767
December17.19.21039

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 24 November
Crocusby 24 November
Daffodilby 24 November
Garlicby 24 November
Grape hyacinthby 24 November
Helleboreby 24 November
Hyacinthby 24 November
Lilyby 24 November
Ornamental onionby 24 November
Peonyby 24 November
Saffronby 24 November
Snowdropby 24 November
Tulipby 24 November
Wild garlicby 24 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).