Frost dates for 83002 — Jackson, WY
Last spring frostAny monthno frost-free season
Freezing nights236 / yrat or below 32°F
Hardiness zone4bZone 4b
Gardening where frost is possible all year
The weather station nearest Jackson, 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 Jackson compares
- Nearby Idaho Falls, ID, 100 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, about 1 km away (elevation 6,211 ft (1,893 m)).
ZIP codes in Jackson: 83001 83002
Frost dates near Jackson
- Wilson frost any month
- Teton Village Jun 20 · Aug 31
- Kelly Jun 24 · Aug 28
- Moose Jun 24 · Aug 28
- Alpine frost any month
- Bondurant frost any month
- Alta Jun 14 · Sep 11
- Etna frost any month
Frequently asked questions
When is the last frost in Jackson, WY?
Jackson, 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 Jackson, 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.