Wilson, WY frost dates
Last spring frostAny monthno frost-free season
Freezing nights236 / yrat or below 32°F
Hardiness zone5bZone 5b
Gardening where frost is possible all year
The weather station nearest Wilson, WY 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 Wilson compares
- Nearby Idaho Falls, ID, 91 km away, has a regular frost season (last frost May 9), a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the Jackson, WY weather station, 9 km away (elevation 6,211 ft (1,893 m)).
Frost dates near Wilson
- Jackson frost any month
- Teton Village Jun 20 · Aug 31
- Moose Jun 24 · Aug 28
- Kelly Jun 24 · Aug 28
- Alpine frost any month
- Alta Jun 14 · Sep 11
- Etna frost any month
- Bondurant frost any month
- Freedom frost any month
- Moran frost any month
Frequently asked questions
When is the last frost in Wilson, WY?
Wilson, WY can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 236 nights a year at or below 32°F.
What can I grow in Wilson, WY?
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.