Last and first frost dates in Tomsk

When is the last frost in Tomsk?

The last frost in Tomsk usually comes around 20 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 29 April, while corn waits until 27 May. The first autumn frost follows around 27 September, about 130 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 Tomsk

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 17 days after it.

Frost dates near Tomsk

Of the nearest cities on our list, the last spring frost ends earliest in Barnaul (3 May) and latest in Kemerovo (18 May).

Seeds, seedlings and markets in Tomsk

Within 15 km of Tomsk OpenStreetMap lists 4 garden centres, 1 farm-supply shop, 2 plant nurseries, 13 markets and 2 farm shops (collected 27 October 2026). The nearest garden centre to the city centre is Семена Томская грядка, 3 km away.

• Семена Томская грядка — garden centre
  улица Шевченко 37 · 10:00–19:00 · 3 km
• Томскагроснаб — farm supply
  Mon–Fri 09:00–18:00; Sat 09:00–14:00 · 2 km
• Центральный рынок — market
  улица Карла Маркса 48, 634009 Томск · Tue–Sun 08:00–18:00 · 2 km
• Калина Малина — farm shop
  Комсомольский проспект 58 стр. 1 · 08:00–21:00 · 3 km
• Семена фирма Поле — garden centre
  Mon, Sat 09:00–17:00; Tue–Fri 09:00–18:00; Sun 09:00–16:00 · 3 km
• Ярмарка выходного дня — market
  Сибирская улица 111/1 · 3 km

• Where to buy seeds and seedlings in Tomsk
• Selling your own harvest in Russia

Places: © OpenStreetMap contributors, ODbL.

Weather in Tomsk by month

Average weather in Tomsk over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June (22.8 °C), July (23.7 °C) and August (21.5 °C). Nights average below 0 °C in October–April (-19.9–-1.4 °C). About 564 mm of rain falls in a year, on 138 days; July is the wettest month (76 mm) and February 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).