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Clear Lake, IA planting calendar

When to plant vegetables in Clear Lake, IA (USDA hardiness zone 5a). Typical last spring frost around May 3, 2026 10 days year to year), first fall frost around Oct 1, 202611 days).

Playing it safe? Spring frost holds off until about May 15, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Still time to plant

As of today, these crops can still reach harvest before Clear Lake, IA’s first frost (~Oct 1, 2026) — fastest first.

Month by month in Clear Lake, IA

January

February

March

April

May

July

August

Understand your frost dates

More Iowa planting calendars

ZIP codes in Clear Lake

50428

Frost dates are NOAA 1991–2020 climate normals for a representative location in Clear Lake, IA (covering 1 ZIP); your exact dates depend on your address. Schedules are guidance, not guarantees.