Last and first frost dates in Lexington

When is the last frost in Lexington?

The last frost in Lexington usually comes around 10 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 20 March, while corn waits until 17 April. The first autumn frost follows around 7 November, about 211 days later: harvest or cover frost-tender crops before then.

When to sow and plant

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 Lexington?

The official USDA map (2023, 1991–2020 data) puts the centre of Lexington (ZIP 40517) in zone 7a. Zone 7a stands for an average coldest night of 0 to 5 °F (-17.8 to -15 °C), so perennials hardy to zone 7a or a colder zone should come through a typical winter here.

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

When the soil warms up in Lexington

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 30 days before the last spring frost and 15 °C 18 days after it.

Frost dates near Lexington

Of the nearest cities on our list, the last spring frost ends earliest in Bowling Green (31 March) and latest in Dayton (17 April).

Seeds, seedlings and markets in Lexington

Within 15 km of Lexington OpenStreetMap lists 1 plant nursery and 4 markets (collected 20 October 2026). The nearest market to the city centre is Stuarto's Olive Oil Co, 5 km away.

• Stuarto's Olive Oil Co — market
  Euclid Avenue 804, Lexington · 5 km
• Goodwill — market
  East Brannon Road · 6 km

• Where to buy seeds and seedlings in Lexington
• Selling your own harvest in the United States

Places: © OpenStreetMap contributors, ODbL.

Weather in Lexington by month

Average weather in Lexington over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: May–October (20.6–30.1 °C). Months that average 30 °C or more by day: July (30.1 °C). Nights average below 0 °C in January (-2.8 °C). About 1358 mm of rain falls in a year, on 141 days; February is the wettest month (142 mm) and October the driest (88 mm).

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

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).