GreenlyRivne: frost dates
Ukraine
In Rivne the last spring frost usually comes around 18 April and the first autumn frost around 16 November, which leaves about 212 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 18 May.
| Last spring frost | around 18 April |
|---|---|
| First autumn frost | around 16 November |
| Frost-free days | 212 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 to sow and plant
| Crop | Sow for seedlings | Plant out in a greenhouse | Open ground |
|---|---|---|---|
| Achocha | 23 February | 4 April | 25 April |
| Arugula | — | 7 March | sow 28 March |
| Basil | 6 April | 14 May | 4 June |
| Beet | — | 7 March | sow 28 March |
| Bell Pepper | 1 March | 14 May | 4 June |
| Black-eyed Susan | 22 February | — | 25 April |
| Bok Choy | 28 February | 4 April | 25 April |
| Broad bean | — | 7 March | sow 28 March |
| Broccoli | — | 7 March | sow 28 March |
| Brussels Sprouts | 21 January | 7 March | 28 March |
| Cabbage | — | 7 March | sow 28 March |
| Calendula | — | 7 March | sow 28 March |
| Carrot | — | — | sow 28 March |
| Cauliflower | 24 January | 7 March | 28 March |
| Celeriac | 17 January | 4 April | 25 April |
| Celery | 17 January | 4 April | 25 April |
| Celosia | 22 March | 6 May | 27 May |
| Chamomile | — | 7 March | sow 28 March |
| Chayote | 10 January | 8 April | 29 April |
| Chickpea | — | — | sow 28 March |
| Chili Pepper | 9 March | 22 May | 12 June |
| China aster | 23 March | 14 May | 4 June |
| Chives | — | — | sow 28 March |
| Cilantro | — | 7 March | sow 28 March |
| Corn | — | 8 April | sow 29 April |
| Cosmos | 22 March | 6 May | 27 May |
| Cucumber | 2 April | 14 May | 4 June |
| Daikon | — | 7 March | sow 28 March |
| Delphinium | 28 January | — | 28 March |
| Dill | — | 7 March | sow 28 March |
| Eggplant | 5 March | 14 May | 4 June |
| Florence fennel | 18 February | 4 April | 25 April |
| Garden sorrel | — | 7 March | sow 28 March |
| Green Beans | 2 March | 8 April | 29 April |
| Hyssop | — | — | sow 28 March |
| Kale | — | 7 March | sow 28 March |
| Kiwano | 26 March | 27 April | 18 May |
| Kohlrabi | — | 7 March | sow 28 March |
| Leek | 27 December | 7 March | 28 March |
| Lemon balm | — | 7 March | sow 28 March |
| Lettuce | — | 7 March | sow 28 March |
| Lisianthus | 10 December | 7 March | 28 March |
| Lovage | — | — | sow 28 March |
| Luffa | 2 April | 14 May | 4 June |
| Marigold | 21 February | 4 April | 25 April |
| Melon | 23 March | 14 May | 4 June |
| Microgreens | — | 6 May | sow 27 May |
| Moringa | 28 March | 22 May | 12 June |
| Mustard greens | — | 7 March | sow 28 March |
| Napa cabbage | 2 March | 4 April | 25 April |
| Nasturtium | 25 February | 4 April | 25 April |
| Okra | 2 April | 14 May | 4 June |
| Oregano | 6 January | 7 March | 28 March |
| Pansy | 10 January | 7 March | 28 March |
| Parsley | — | 7 March | sow 28 March |
| Parsnip | — | — | sow 28 March |
| Peanut | 7 April | 14 May | 4 June |
| Peas | — | 7 March | sow 28 March |
| Petunia | 12 March | 14 May | 4 June |
| Physalis | 13 March | 27 April | 18 May |
| Pumpkin | 21 March | 27 April | 18 May |
| Purple coneflower | 25 January | — | 28 March |
| Radish | — | — | sow 28 March |
| Sage | 17 January | 7 March | 28 March |
| Snapdragon | 1 January | 7 March | 28 March |
| Spinach | — | 7 March | sow 28 March |
| Stevia | 9 March | 27 April | 18 May |
| Stock | — | 7 March | sow 28 March |
| Sunflower | — | 6 May | sow 27 May |
| Sweet Corn | — | 8 April | sow 29 April |
| Sweet pea | 24 January | 7 March | 28 March |
| Sweet William | — | — | sow 28 March |
| Swiss Chard | — | 7 March | sow 28 March |
| Thyme | — | 7 March | sow 28 March |
| Tomato | 1 March | 27 April | 18 May |
| Turnip | — | 7 March | sow 28 March |
| Watercress | — | 7 March | sow 28 March |
| Watermelon | 12 April | 14 May | 4 June |
| Zinnia | 17 April | 22 May | 12 June |
| Zucchini | 26 March | 27 April | 18 May |
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.
Rivne: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in Rivne by month
Average weather in Rivne over 2016–2025: the warmest month is August, the wettest July.
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 0.8 | -4.1 | 47 | 12 |
| February | 3.1 | -3.2 | 45 | 11 |
| March | 8.1 | -0.5 | 43 | 11 |
| April | 14.2 | 4.2 | 46 | 10 |
| May | 18.7 | 8.7 | 64 | 12 |
| June | 24 | 14.3 | 73 | 13 |
| July | 24.8 | 15.6 | 86 | 13 |
| August | 25.3 | 15.1 | 49 | 8 |
| September | 20.2 | 11.1 | 60 | 9 |
| October | 13.5 | 6.3 | 55 | 11 |
| November | 6.4 | 1.5 | 42 | 10 |
| December | 2.4 | -1.7 | 62 | 14 |
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
| Crop | Plant around |
|---|---|
| Bearded Iris | 17 October |
| Crocus | 17 October |
| Daffodil | 17 October |
| Garlic | 17 October |
| Hyacinth | 17 October |
| Lily | 17 October |
| Peony | 17 October |
| Saffron | 17 October |
| Tulip | 17 October |
| Wild garlic | 17 October |
A month before the first autumn frost, so the roots grow before winter.