Farson, WY frost dates
Last spring frostAny monthno frost-free season
Freezing nights243 / yrat or below 32°F
Hardiness zone4aZone 4a
Gardening where frost is possible all year
The weather station nearest Farson, 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.
About these dates
Based on 1991–2020 NOAA climate normals for the Farson 2nne, WY weather station, 6 km away (elevation 6,621 ft (2,018 m)).
Frost dates near Farson
- Reliance May 24 · Sep 24
- Superior May 22 · Sep 28
- Rock Springs May 24 · Sep 24
- Green River May 24 · Sep 22
- La Barge Jun 9 · Sep 4
- Boulder frost any month
- Point Of Rocks May 22 · Sep 28
- Little America May 25 · Sep 27
- Granger May 25 · Sep 27
- Opal frost any month
Frequently asked questions
When is the last frost in Farson, WY?
Farson, WY can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 243 nights a year at or below 32°F.
What can I grow in Farson, 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.