Last and first frost dates in Medford

When is the last frost in Medford?

The last frost in Medford usually comes around 30 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 9 April, while corn waits until 11 May. The first autumn frost follows around 20 October, about 173 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 Medford

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 3 days before the last spring frost and 15 °C 30 days after it.

Frost dates near Medford

Of the nearest cities on our list, the last spring frost ends earliest in Redding (15 February) and latest in Reno (16 April).

Seeds, seedlings and markets in Medford

Within 15 km of Medford OpenStreetMap lists 13 garden centres, 2 farm-supply shops, 3 markets and 10 farm shops (collected 29 October 2026). The nearest garden centre to the city centre is Grange Co-op, 3 km away.

• Grange Co-op — garden centre
  South Front Street 225, 97502 Central Point · Mon–Sat 08:00–18:00; Sun 09:00–17:00 · 3 km · grangecoop.com
• Biologic Crop Solutions — farm supply · sells seed
  Luman Road 123, 97535 Phoenix · 10 km · livebiologic.com
• Dunbar Farms Honor Barn Farm Stand — farm shop
  Hillcrest Road 2881, 97504 Medford · sunrise–22:00 · 5 km · dunbarfarms.com
• Walmart Garden Center — garden centre
  Center Drive 1360, 97501 Medford · Mon–Sun 06:00–24:00 · 6 km · walmart.com
• Phoenix Farmers Market — farm shop
  South Pacific Highway 4880, 97535 Phoenix · Mon–Sat 10:00–18:00 · 12 km
• Flowerland — garden centre
  Table Rock Road 6808, 97502 Central Point · 6 km · flowerlandnursery.net

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

Places: © OpenStreetMap contributors, ODbL.

Weather in Medford by month

Average weather in Medford over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: May–September (20.5–31.2 °C). Months that average 30 °C or more by day: July (31.1 °C) and August (31.2 °C). Nights average below 0 °C in December–March (-1.6–-0.5 °C). About 956 mm of rain falls in a year, on 109 days; December is the wettest month (158 mm) and July the driest (3 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).