Last and first frost dates in Kostanay

When is the last frost in Kostanay?

The last frost in Kostanay usually comes around 4 May: 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 13 April, while corn waits until 11 May. The first autumn frost follows around 2 October, about 151 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.

When the soil warms up in Kostanay

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 3 days before the last spring frost and 15 °C 21 days after it.

Frost dates near Kostanay

Of the nearest cities on our list, the last spring frost ends earliest in Rudny (28 April) and latest in Kokshetau (7 May).

Seeds, seedlings and markets in Kostanay

Within 15 km of Kostanay OpenStreetMap lists 3 garden centres, 10 markets and 1 farm shop (collected 27 October 2026). The nearest garden centre to the city centre is Invent.kz, 3 km away.

• Invent.kz — garden centre
  Рабочая көшесі 165, Қостанай · 3 km · invent.kz
• Береке — market
  Шевченко көшесі 37 · 2 km
• Астана — farm shop
  проспект Аль-Фараби 45, 110000 Қостанай · Mon–Fri 09:00–18:00 · 1 km
• Садовод — garden centre
  улица Воинов-Интернационалистов 8б · 3 km
• Усадьба — garden centre
  улица Тауелсиздик 51/1, 111100 · 5 km

• Where to buy seeds and seedlings in Kostanay
• Selling your own harvest in Kazakhstan

Places: © OpenStreetMap contributors, ODbL.

Weather in Kostanay by month

Average weather in Kostanay over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: May–August (20.4–26.2 °C). Nights average below 0 °C in November–March (-17.4–-7.6 °C). About 446 mm of rain falls in a year, on 90 days; July is the wettest month (60 mm) and January the driest (24 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).