Winter Park, CO frost dates
Last spring frostAny monthno frost-free season
Freezing nights288 / yrat or below 32°F
Hardiness zone5aZone 5a
Gardening where frost is possible all year
The weather station nearest Winter Park, 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 Winter Park compares
- Nearby Boulder, CO, 44 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 Fraser, CO weather station, 6 km away (elevation 8,560 ft (2,609 m)).
Frost dates near Winter Park
- Fraser frost any month
- Tabernash frost any month
- Empire May 30 · Sep 19
- Dumont May 30 · Sep 19
- Silver Plume May 30 · Sep 19
- Georgetown May 30 · Sep 19
- Idaho Springs May 30 · Sep 19
- Granby Jun 13 · Sep 7
- Rollinsville Jun 5 · Sep 16
- Central City Jun 5 · Sep 16
Frequently asked questions
When is the last frost in Winter Park, CO?
Winter Park, CO can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 288 nights a year at or below 32°F.
What can I grow in Winter Park, 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.