Glenwood, WA frost dates
Last spring frostAny monthno frost-free season
Freezing nights193 / yrat or below 32°F
Hardiness zone7aZone 7a
Gardening where frost is possible all year
The weather station nearest Glenwood, WA 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 Glenwood compares
- Nearby Yakima, WA, 83 km away, has a regular frost season (last frost Apr 8), a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the Glenwood #2, WA weather station, 2 km away (elevation 1,903 ft (580 m)).
Frost dates near Glenwood
- Appleton May 12 · Oct 11
- Trout Lake May 18 · Sep 25
- Wahkiacus May 12 · Oct 11
- Klickitat May 12 · Oct 11
- Husum May 12 · Oct 11
- Lyle May 12 · Oct 11
- White Salmon Apr 20 · Oct 13
- Bingen Apr 20 · Oct 13
- Underwood Apr 20 · Oct 13
- Goldendale May 19 · Sep 25
Frequently asked questions
When is the last frost in Glenwood, WA?
Glenwood, WA can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 193 nights a year at or below 32°F.
What can I grow in Glenwood, WA?
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.