Greenly Garden

Last and first frost dates in León

Mexico

Last spring frostnone in ten years
First autumn frostaround 15 December

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 the soil warms up in León

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

SoilDate
5 °Calready in the first week of January
10 °Calready in the first week of January
15 °Calready in the first week of January
18 °C4 February

Frost dates near León

Of the nearest cities on our list, the last spring frost ends earliest in Aguascalientes (6 January) and latest in San Luis Potosí (28 February).

CityDistanceLast spring frostFirst autumn frost
Irapuato61 km——
Aguascalientes105 km6 January12 December
Celaya112 km——
San Luis Potosí135 km28 February15 December
Querétaro146 km——

Weather in León by month

Average weather in León over 2016–2025: the warmest month is May. Months that average 20 °C or more by day: January–December (23.6–31.9 °C). Months that average 30 °C or more by day: April (31 °C) and May (31.9 °C). No month averages below 0 °C at night; the coldest nights, in January, average 8 °C. About 612 mm of rain falls in a year, on 87 days; July is the wettest month (143 mm) and March the driest (4 mm).

MonthDay, °CNight, °CRain, mmRainy days
January23.8862
February26.39.782
March29.311.841
April3113.941
May31.915.8275
June29.415.911512
July26.514.614320
August26.514.611917
September25.914.112016
October26.212.7417
November25.510.5172
December23.68.582

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).