Hereford, OR frost dates
Last spring frostAny monthno frost-free season
Freezing nights245 / yrat or below 32°F
Hardiness zone6aZone 6a
Gardening where frost is possible all year
The weather station nearest Hereford, OR records freezing temperatures in every month often enough that NOAA cannot define a frost-free season. Gardening is still possible — it just means planning for frost at any time:
- Grow fast, cold-tolerant crops: Radishes, Lettuce, Spinach, Kale, Peas, Potatoes, Swiss Chard, Garlic.
- Plant once the soil can be worked — usually late spring to early summer at high elevation — and keep row covers ready for clear, still nights.
- Use season extension: cold frames, low tunnels, wall-of-water cloches or a greenhouse turn a few frost-free weeks into a real season.
- Frost-tender crops (tomatoes, squash, beans) need protection all season; choose the earliest varieties you can find.
About these dates
Based on 1991–2020 NOAA climate normals for the Austin 3 S, OR weather station, 37 km away (elevation 4,213 ft (1,284 m)).
Frost dates near Hereford
- Unity frost any month
- Bridgeport May 25 · Sep 15
- Ironside May 7 · Oct 3
- Sumpter frost any month
- Baker City May 25 · Sep 15
- Haines May 25 · Sep 15
- Durkee Apr 23 · Oct 13
- Brogan May 7 · Oct 3
- Bates frost any month
- Prairie City frost any month
Frequently asked questions
When is the last frost in Hereford, OR?
Hereford, OR can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 245 nights a year at or below 32°F.
What can I grow in Hereford, OR?
Fast, cold-tolerant crops such as radishes, lettuce, spinach, kale, peas and potatoes, ideally under row covers, cold frames or a greenhouse. Frost-tender crops like tomatoes need protection all season.