Seattle in June: what to plant
Over the last 5 years, June in Seattle has run 12.2–21.0°C with about 42 mm of rain across the month. Here is what weather like that will carry to harvest.
Everything above is a five-year average. In the game it is this — the weather Seattle is actually having, today.
Grow one in Seattle's weather right now →❄️ No sub-zero nights in June in the last 5 years — frost is not the limiting factor here.
🗓️ This month sits inside the frost-free window. Average last spring frost around Mar 1, first autumn frost around Dec 9 — roughly 283 frost-free days. Sow tender crops after the last frost date and make sure they finish before the first.
☀️ About 11.4 h of sunshine a day this month. Within the month it warms by about 1.9°C from the first ten days to the last.
Sow this month — when would you harvest?
Assuming you sow in mid-June, then adding up the warmth Seattle usually gets, one day at a time — which is why some of these run past the end of the month.
| Crop | Days | Harvest around |
|---|---|---|
| 🥒 Zucchini | 69 | Aug 22 |
| 🥢 Green Beans | 64 | Aug 17 |
| 🌿 Amaranth greens | 60 | Aug 13 |
| 🏵️ Marigold | 50 | Aug 3 |
| 🥔 Potato | 73 | Aug 26 |
| 🌿 Garlic chives | 60 | Aug 13 |
| 🥬 Cauliflower | 62 | Aug 15 |
| 🥬 Napa cabbage | 56 | Aug 9 |
| 🍓 Strawberry | 50 | Aug 3 |
| 🥕 Parsnip | 85 | Sep 7 |
| 🧅 Onion | 73 | Aug 26 |
| 🧅 Leek | 75 | Aug 28 |
🌡️ Bitter melon, Luffa, Winter melon, Aubergine, Okra never accumulate enough heat outdoors in Seattle — not in any month. Locally these need a greenhouse or a warm windowsill.
Best crops to sow now
They are all ideal for this month — the only real difference is how long each one takes, so pick whatever you want to eat.
- 🥒 Zucchini about 99 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🥢 Green Beans about 91 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🌿 Amaranth greens about 84 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🏵️ Marigold about 63 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🥔 Potato about 94 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🌿 Garlic chives about 74 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🥬 Cauliflower about 76 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🥬 Napa cabbage about 68 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🍓 Strawberry about 60 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🥕 Parsnip about 102 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🧅 Onion about 91 days to harvest Recent mean 16.6°C — right in the sweet spot
- 🧅 Leek about 92 days to harvest Recent mean 16.6°C — right in the sweet spot
Leave these for another month
- 🌶️ Okra — Recent mean 16.6°C is too cold (ideal 20–33°C)
- 🍆 Aubergine — Recent mean 16.6°C is too cold (ideal 18–32°C)
- 🍈 Winter melon — Recent mean 16.6°C is too cold (ideal 18–32°C)
Other months in Seattle
📍 Somewhere else? Look up your own city →
Temperature and rainfall come from Open-Meteo's historical observations for Seattle, averaged day by day over the last 5 years. Whether a crop finishes in time is worked out from its own starting temperature and heat requirement — those numbers are listed on each crop page if you want to check them.