Last and first frost dates in Eugene

When is the last frost in Eugene?

The last frost in Eugene usually comes around 15 April: 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 25 March, while corn waits until 4 May. The first autumn frost follows around 29 October, about 197 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 Eugene

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 same day the last spring frost and 15 °C 37 days after it.

Frost dates near Eugene

Of the nearest cities on our list, the last spring frost ends earliest in Olympia (19 March) and latest in Medford (30 April).

Seeds, seedlings and markets in Eugene

Within 15 km of Eugene OpenStreetMap lists 11 garden centres, 5 farm-supply shops, 4 plant nurseries, 8 markets and 4 farm shops (collected 29 October 2026). The nearest garden centre to the city centre is Oregon's Constant Gardener, 1 km away.

• Oregon's Constant Gardener — garden centre
  Garfield Street 990, 97402 Eugene · 1 km
• Coastal Farm & Ranch — farm supply
  West 6th Avenue 2200, 97402 Eugene · Mon–Sat 08:00–20:00; Sun 09:00–18:00 · 1 km · coastalcountry.com
• Little Red Farm Nursery — plant nursery
  South 42nd Street 1020, 97478 Springfield · 13 km
• Provisions Market Hall — market
  East 5th Avenue 296, 97401 Eugene · 3 km · provisionsmarkethall.com
• Groundwork Organics — farm shop
  River Road 91360 · 10 km · groundworkorganics.com
• Gray's Garden Center — garden centre
  West 6th Avenue 737, 97402 Eugene · 2 km

• Where to buy seeds and seedlings in Eugene
• Selling your own harvest in the United States

Places: © OpenStreetMap contributors, ODbL.

Weather in Eugene by month

Average weather in Eugene over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: May–September (20.1–29.9 °C). No month averages below 0 °C at night; the coldest nights, in February, average 1.1 °C. About 1455 mm of rain falls in a year, on 142 days; December is the wettest month (226 mm) and July the driest (5 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).