Rand, CO frost dates
Last spring frostAny monthno frost-free season
Freezing nights276 / yrat or below 32°F
Hardiness zone4bZone 4b
Gardening where frost is possible all year
The weather station nearest Rand, CO 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 Rand compares
- Nearby Boulder, CO, 89 km away, has a regular frost season (last frost May 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 Gould 4se Sfsp, CO weather station, 16 km away (elevation 8,999 ft (2,743 m)).
Frost dates near Rand
- Walden frost any month
- Coalmont frost any month
- Grand Lake frost any month
- Cowdrey frost any month
- Hot Sulphur Springs Jun 12 · Sep 10
- Kremmling Jun 14 · Sep 5
- Granby Jun 13 · Sep 7
- Estes Park frost any month
- Parshall Jun 12 · Sep 10
- Estes Park (Larimer) May 30 · Sep 17
Frequently asked questions
When is the last frost in Rand, CO?
Rand, CO can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 276 nights a year at or below 32°F.
What can I grow in Rand, CO?
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.