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Planting calendar for ZIP 80498 (Silverthorne, CO)

When to plant vegetables in Silverthorne, CO (USDA hardiness zone 5a). Typical last spring frost around Jun 21, 2026 12 days year to year), first fall frost around Sep 7, 202610 days).

Playing it safe? Spring frost holds off until about Jul 6, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Silverthorne, CO planting calendar for dates typical of the whole city.

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Month by month in Silverthorne, CO

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June

July

Understand your frost dates

Frost dates for ZIP 80498: NOAA 1991-2020 normals (USC00058575 VAIL, CO US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.