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Last and first frost dates in Syracuse (United States)

United States

In Syracuse (United States) the last spring frost usually comes around 28 April and the first autumn frost around 6 November, which leaves about 192 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 22 May to 17 July.

Last spring frostaround 28 April
First autumn frostaround 6 November
Frost-free days192 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 Syracuse (United States)?

The last frost in Syracuse (United States) usually comes around 28 April: 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 7 April, while corn waits until 5 May. The first autumn frost follows around 6 November, about 192 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha5 March – 29 July14 April – 7 September5 May – 7 September
Ageratumfrom 6 March—from 22 May
Arugula——sow 7 April – 2 October
Basil2 April – 4 September10 May – 12 October31 May – 12 October
Beet——sow 7 April – 7 September
Bell Pepper11 March – 18 May10 May – 17 July31 May – 17 July
Black-eyed Susanfrom 11 February—from 5 May
Bok Choy10 March – 15 September14 April – 20 October5 May – 20 October
Borage——sow 5 May – 12 September
Broad bean——sow 7 April – 29 July
Broccoli——sow 7 April – 22 July
Brussels Sprouts31 January – 19 June17 March – 3 August7 April – 3 August
Busy Lizziefrom 10 February—from 5 May
Cabbage——sow 7 April – 29 June
Calendula——sow from 7 April
Carrot——sow 7 April – 14 August
Cauliflower3 February – 22 July17 March – 2 September7 April – 2 September
Celeriac27 January – 19 May14 April – 4 August5 May – 4 August
Celery27 January – 29 May14 April – 14 August5 May – 14 August
Celosiafrom 23 Marchfrom 7 Mayfrom 28 May
Chamomile——sow 7 April – 2 September
Chayote16 January – 12 May14 April – 8 August5 May – 8 August
Chickpea——sow 7 April – 19 July
Chicory20 February – 13 August—7 April – 7 September
Chili Pepper11 March – 24 June10 May – 23 August31 May – 23 August
China asterfrom 19 Marchfrom 10 Mayfrom 31 May
Chives——sow 7 April – 24 August
Cilantro——sow 7 April – 3 September
Corn——sow 5 May – 19 July
Corn poppy——sow from 7 April
Cosmosfrom 23 Marchfrom 7 Mayfrom 28 May
Cucumber12 April – 25 July10 May – 22 August31 May – 22 August
Daikon——sow 7 April – 31 August
Delphiniumfrom 17 January—from 7 April
Dill——sow 7 April – 13 September
Edging lobeliafrom 10 February—from 5 May
Eggplant11 March – 18 May10 May – 17 July31 May – 17 July
Florence fennel28 February – 29 July14 April – 12 September5 May – 12 September
Foxglovefrom 30 December—from 7 April
Garden sorrel——sow 7 April – 1 September
Green Beans——sow 28 May – 27 July
Hollyhock——sow from 7 April
Hyssop——sow 7 April – 25 July
Kale——sow 7 April – 26 August
Kiwano30 March – 1 August1 May – 2 September22 May – 2 September
Kohlrabi——sow 7 April – 5 September
Leek6 January – 10 May17 March – 19 July7 April – 19 July
Lemon balm——sow 7 April – 28 August
Lettuce——sow 7 April – 10 September
Lisianthusfrom 20 Decemberfrom 17 Marchfrom 7 April
Lovage——sow from 7 April
Luffa29 March – 26 May10 May – 7 July31 May – 7 July
Marigoldfrom 3 Marchfrom 14 Aprilfrom 5 May
Marjoram11 March – 13 August—31 May – 12 October
Melon12 April – 12 July10 May – 9 August31 May – 9 August
Microgreens——sow 28 May – 23 October
Moringa3 April – 18 August28 May – 12 October18 June – 12 October
Moss rosefrom 17 February—from 5 May
Mustard greens——sow 7 April – 22 September
Napa cabbage12 March – 23 August14 April – 25 September5 May – 25 September
Nasturtiumfrom 7 Marchfrom 14 Aprilfrom 5 May
Okra29 March – 6 August10 May – 17 September31 May – 17 September
Oregano16 January – 3 August17 March – 2 October7 April – 2 October
Pansyfrom 20 Januaryfrom 17 Marchfrom 7 April
Parsley——sow 7 April – 22 August
Parsnip——sow 7 April – 11 July
Peanut3 April – 2 July10 May – 8 August31 May – 8 August
Peas——sow 7 April – 24 August
Petuniafrom 8 Marchfrom 10 Mayfrom 31 May
Physalis17 March – 29 June1 May – 13 August22 May – 13 August
Pumpkin29 March – 31 May10 May – 12 July31 May – 12 July
Purple coneflowerfrom 14 January—from 7 April
Radish——sow 7 April – 7 October
Sage27 January – 30 July17 March – 17 September7 April – 17 September
Scarlet sagefrom 10 March—from 22 May
Snapdragonfrom 11 Januaryfrom 17 Marchfrom 7 April
Soybean——sow 31 May – 18 August
Spinach——sow 7 April – 12 September
Stevia13 March – 20 June1 May – 8 August22 May – 8 August
Stock——sow from 7 April
Sunflower——sow from 28 May
Sweet alyssum——sow from 7 April
Sweet Corn28 March – 13 August19 April – 4 September10 May – 4 September
Sweet peafrom 3 Februaryfrom 17 Marchfrom 7 April
Sweet William——sow from 7 April
Swiss Chard——sow 7 April – 7 September
Thyme——sow 7 April – 19 July
Tomato10 March – 26 May1 May – 17 July22 May – 17 July
Turnip——sow 7 April – 9 September
Watercress——sow 7 April – 20 September
Watermelon12 April – 30 June10 May – 28 July31 May – 28 July
Zinniafrom 23 Aprilfrom 28 Mayfrom 18 June
Zucchini19 April – 30 July10 May – 20 August31 May – 20 August

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 Syracuse (United States)

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 5 days before the last spring frost and 15 °C 24 days after it.

SoilDateAgainst the last spring frost
5 °C20 March39 days earlier
10 °C23 April5 days earlier
15 °C22 May24 days later
18 °C31 May33 days later

Frost dates near Syracuse (United States)

Of the nearest cities on our list, the last spring frost ends earliest in Albany (17 April) and latest in Ottawa (30 April).

CityDistanceLast spring frostFirst autumn frost
Ithaca74 km28 April8 November
Rochester121 km20 April12 November
Albany199 km17 April6 November
Buffalo224 km24 April10 November
Ottawa266 km30 April1 November

Seeds, seedlings and markets in Syracuse (United States)

Within 15 km of Syracuse (United States) OpenStreetMap lists 7 garden centres, 1 plant nursery, 3 markets and 7 farm shops (collected 29 October 2026). The nearest garden centre to the city centre is HTG Supply, 2 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Syracuse (United States)

Frosts in Syracuse (United States) usually come from about 6 November to about 28 April. 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 Syracuse (United States) by month

Average weather in Syracuse (United States) over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June–September (22.5–27.2 °C). Nights average below 0 °C in December–March (-7–-2.7 °C). About 1306 mm of rain falls in a year, on 177 days; August is the wettest month (131 mm) and September the driest (89 mm).

MonthDay, °CNight, °CRain, mmRainy days
January0.4-79916
February2.8-6.49115
March7.1-2.79316
April13.12.711915
May19.59.210814
June24.414.711114
July27.21812614
August25.617.213114
September22.513.78910
October16.38.212915
November8.21.110316
December2.8-3.910718

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 7 October
Crocus7 October – 28 November
Daffodil7 October – 28 November
Garlic7 October – 28 November
Grape hyacinthby 7 October
Helleboreby 7 October
Hyacinth7 October – 28 November
Lilyby 7 October
Ornamental onionby 7 October
Peonyby 7 October
Saffronby 7 October
Snowdropby 7 October
Tulip7 October – 28 November
Wild garlicby 7 October

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).