GreenlyFrost dates and when to plant in the Northern Territory
Australia
In the Northern Territory the last spring frost comes around 4 July (the median of 2016–2025 in 1 cities). The first autumn frost comes around 6 June. That leaves about 337 days without frost. One of the 2 cities had no frost at all. Tomato: plant out into open ground 12 July – 14 February in every city.
Frost dates by city in the Northern Territory
| City | Last spring frost | First autumn frost | Frost-free days | Climate zone | Tomato: window |
|---|---|---|---|---|---|
| Alice Springs | 4 July | 6 June | 337 | 270 frost-free days or more | 12 July – 14 February |
| Darwin | none in ten years | none in ten years | — | No frost in ten years | — |
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 plant in the Northern Territory: windows by crop
The earliest start and the latest end among the cities here, each with its city; every city’s own window is on its page. 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.
| Crop | Planting out or sowing |
|---|---|
| Tomato | 12 July – 14 February (Alice Springs) |
| Cucumber | 27 July – 21 March (Alice Springs) |
| Bell Pepper, Eggplant | 27 July – 14 February (Alice Springs) |
| Zucchini | 27 July – 19 March (Alice Springs) |
| Pumpkin | 27 July – 9 February (Alice Springs) |
| Watermelon | 27 July – 25 February (Alice Springs) |
| Peas | 13 June – 23 March (Alice Springs) |
| Garlic, Tulip, Daffodil, Crocus, Hyacinth | Autumn planting: by 7 May (Alice Springs) |
Weather by month in the Northern Territory
Across the 2 cities the warmest month is December (average days 32.4 … 35.5 °C) and the coldest July (average nights 6.7 … 20.2 °C). No city here averages below 0 °C at night in any month.
| Month | Day, °C | Night, °C | Rain, mm |
|---|---|---|---|
| January | 31 … 36.1 °C | 23.5 … 25.9 °C | 254 |
| February | 30.9 … 35.5 °C | 22.1 … 25.8 °C | 194 |
| March | 31.3 … 33.3 °C | 20.4 … 25.7 °C | 162 |
| April | 28.6 … 32.1 °C | 15.1 … 24.8 °C | 55 |
| May | 22.6 … 31.8 °C | 9.8 … 23.1 °C | 19 |
| June | 19.5 … 30.8 °C | 7 … 21.2 °C | 10 |
| July | 20.4 … 30.7 °C | 6.7 … 20.2 °C | 3 |
| August | 23.4 … 31.9 °C | 9.1 … 21.1 °C | 5 |
| September | 27.3 … 32.8 °C | 12.9 … 23.5 °C | 27 |
| October | 31.7 … 33.5 °C | 17.2 … 25.5 °C | 52 |
| November | 33 … 33.1 °C | 19.5 … 26 °C | 114 |
| December | 32.4 … 35.5 °C | 22.3 … 26.2 °C | 180 |
Day and night: the lowest … highest monthly average among the cities; rain: the middle city (ERA5 via Open-Meteo).
