Skip to main content

Planting calendar for ZIP 59327 (Forsyth, MT)

When to plant vegetables in Forsyth, MT (USDA hardiness zone 4b). Typical last spring frost around May 15, 2026 10 days year to year), first fall frost around Sep 30, 202611 days).

Playing it safe? Spring frost holds off until about May 27, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Forsyth, MT planting calendar for dates typical of the whole city.

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

Or get a printable ZIP 59327 calendar and sowing reminders by email:

Month by month in Forsyth, MT

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 59327: NOAA 1991-2020 normals (USC00241905 COLSTRIP, MT US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.