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Last and first frost dates in Saltillo

Mexico

In Saltillo the last spring frost usually comes around 20 February and the first autumn frost around 26 November, which leaves about 279 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 27 February to 6 August.

Last spring frostaround 20 February
First autumn frostaround 26 November
Frost-free days279 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 Saltillo?

The last frost in Saltillo usually comes around 20 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 30 January, while corn waits until 27 February. The first autumn frost follows around 26 November, about 279 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha28 December – 18 August6 February – 27 September27 February – 27 September
Ageratumfrom 12 December—from 27 February
Arugula——sow 30 January – 22 October
Basil30 December – 24 September6 February – 1 November27 February – 1 November
Beet——sow 30 January – 27 September
Bell Pepper8 December – 7 June6 February – 6 August27 February – 6 August
Black-eyed Susanfrom 6 December—from 27 February
Bok Choy2 January – 5 October6 February – 9 November27 February – 9 November
Borage——sow 27 February – 2 October
Broad bean——sow 30 January – 18 August
Broccoli——sow 30 January – 11 August
Brussels Sprouts25 November – 9 July9 January – 23 August30 January – 23 August
Busy Lizziefrom 5 December—from 27 February
Cabbage——sow 30 January – 19 July
Calendula——sow from 30 January
Carrot——sow 30 January – 3 September
Cauliflower28 November – 11 August9 January – 22 September30 January – 22 September
Celeriac21 November – 8 June6 February – 24 August27 February – 24 August
Celery21 November – 18 June6 February – 3 September27 February – 3 September
Celosiafrom 23 Decemberfrom 6 Februaryfrom 27 February
Chamomile——sow 30 January – 22 September
Chayote10 November – 1 June6 February – 28 August27 February – 28 August
Chickpea——sow 30 January – 8 August
Chicory15 December – 2 September—30 January – 27 September
Chili Pepper8 December – 14 July6 February – 12 September27 February – 12 September
China asterfrom 16 Decemberfrom 6 Februaryfrom 27 February
Chives——sow 30 January – 13 September
Cilantro——sow 30 January – 23 September
Corn——sow 27 February – 8 August
Corn poppy——sow from 30 January
Cosmosfrom 23 Decemberfrom 6 Februaryfrom 27 February
Cucumber9 January – 14 August6 February – 11 September27 February – 11 September
Daikon——sow 30 January – 20 September
Delphiniumfrom 11 November—from 30 January
Dill——sow 30 January – 3 October
Edging lobeliafrom 5 December—from 27 February
Eggplant8 December – 7 June6 February – 6 August27 February – 6 August
Florence fennel23 December – 18 August6 February – 2 October27 February – 2 October
Foxglovefrom 24 October—from 30 January
Garden sorrel——sow 30 January – 21 September
Green Beans——sow 27 February – 16 August
Hollyhock——sow from 30 January
Hyssop——sow 30 January – 14 August
Kale——sow 30 January – 15 September
Kiwano5 January – 21 August6 February – 22 September27 February – 22 September
Kohlrabi——sow 30 January – 25 September
Leek31 October – 30 May9 January – 8 August30 January – 8 August
Lemon balm——sow 30 January – 17 September
Lettuce——sow 30 January – 30 September
Lisianthusfrom 14 Octoberfrom 9 Januaryfrom 30 January
Lovage——sow from 30 January
Luffa26 December – 15 June6 February – 27 July27 February – 27 July
Marigoldfrom 26 Decemberfrom 6 Februaryfrom 27 February
Marjoram8 December – 2 September—27 February – 1 November
Melon9 January – 1 August6 February – 29 August27 February – 29 August
Microgreens——sow 27 February – 12 November
Moringa14 December – 7 September7 February – 1 November28 February – 1 November
Moss rosefrom 12 December—from 27 February
Mustard greens——sow 30 January – 12 October
Napa cabbage4 January – 12 September6 February – 15 October27 February – 15 October
Nasturtiumfrom 30 Decemberfrom 6 Februaryfrom 27 February
Okra26 December – 26 August6 February – 7 October27 February – 7 October
Oregano10 November – 23 August9 January – 22 October30 January – 22 October
Pansyfrom 14 Novemberfrom 9 Januaryfrom 30 January
Parsley——sow 30 January – 11 September
Parsnip——sow 30 January – 31 July
Peanut31 December – 22 July6 February – 28 August27 February – 28 August
Peas——sow 30 January – 13 September
Petuniafrom 5 Decemberfrom 6 Februaryfrom 27 February
Physalis23 December – 19 July6 February – 2 September27 February – 2 September
Pumpkin26 December – 20 June6 February – 1 August27 February – 1 August
Purple coneflowerfrom 8 November—from 30 January
Radish——sow 30 January – 27 October
Sage21 November – 19 August9 January – 7 October30 January – 7 October
Scarlet sagefrom 16 December—from 27 February
Snapdragonfrom 5 Novemberfrom 9 Januaryfrom 30 January
Soybean——sow 27 February – 7 September
Spinach——sow 30 January – 2 October
Stevia19 December – 10 July6 February – 28 August27 February – 28 August
Stock——sow from 30 January
Sunflower——sow from 27 February
Sweet alyssum——sow from 30 January
Sweet Corn15 January – 2 September6 February – 24 September27 February – 24 September
Sweet peafrom 28 Novemberfrom 9 Januaryfrom 30 January
Sweet William——sow from 30 January
Swiss Chard——sow 30 January – 27 September
Thyme——sow 30 January – 8 August
Tomato16 December – 15 June6 February – 6 August27 February – 6 August
Turnip——sow 30 January – 29 September
Watercress——sow 30 January – 10 October
Watermelon9 January – 20 July6 February – 17 August27 February – 17 August
Zinniafrom 3 Januaryfrom 7 Februaryfrom 28 February
Zucchini16 January – 19 August6 February – 9 September27 February – 9 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 Saltillo

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 °C3 February17 days earlier
18 °C18 February2 days earlier

Frost dates near Saltillo

Of the nearest cities on our list, the last spring frost ends earliest in Monterrey (18 January) and latest in Nuevo Laredo (27 January).

CityDistanceLast spring frostFirst autumn frost
Monterrey72 km18 January23 December
Torreón245 km20 January16 December
Ciudad Victoria264 km22 January16 December
Nuevo Laredo270 km27 January23 December
Reynosa280 km22 January23 December

Seeds, seedlings and markets in Saltillo

Within 15 km of Saltillo OpenStreetMap lists 3 markets (collected 27 October 2026). The nearest market to the city centre is Mercado de Finde, 8 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Saltillo

Frosts in Saltillo usually come from about 26 November to about 20 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 Saltillo by month

Average weather in Saltillo over 2016–2025: the warmest month is May. Months that average 20 °C or more by day: February–November (21.2–29 °C). No month averages below 0 °C at night; the coldest nights, in January, average 5.4 °C. About 415 mm of rain falls in a year, on 77 days; September is the wettest month (89 mm) and February the driest (11 mm).

MonthDay, °CNight, °CRain, mmRainy days
January18.15.4173
February227.8112
March24.510.2163
April2713.1205
May2915.9329
June28.716.6448
July27.316.66511
August27.516.6499
September24.715.28913
October23.312.1336
November21.29.3225
December19.67.3173

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 27 October
Crocusby 27 October
Daffodilby 27 October
Garlicby 27 October
Grape hyacinthby 27 October
Helleboreby 27 October
Hyacinthby 27 October
Lilyby 27 October
Ornamental onionby 27 October
Peonyby 27 October
Saffronby 27 October
Snowdropby 27 October
Tulipby 27 October
Wild garlicby 27 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).