Brothers, OR frost dates
Last spring frostAny monthno frost-free season
Freezing nights229 / yrat or below 32°F
Hardiness zone6aZone 6a
Gardening where frost is possible all year
The weather station nearest Brothers, 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.
How Brothers compares
- Nearby Bend, OR, 75 km away, has a regular frost season (last frost Jun 6), a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the Brothers, OR weather station, 10 km away (elevation 4,639 ft (1,414 m)).
Frost dates near Brothers
- Post Jun 2 · Sep 17
- Christmas Valley frost any month
- Riley Jun 11 · Sep 28
- Prineville Jun 1 · Sep 22
- Fort Rock frost any month
- Powell Butte Jun 9 · Sep 14
- Paulina frost any month
- Bend Jun 6 · Sep 20
- Redmond Jun 9 · Sep 14
- Silver Lake frost any month
Frequently asked questions
When is the last frost in Brothers, OR?
Brothers, OR can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 229 nights a year at or below 32°F.
What can I grow in Brothers, 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.