When to plant in Fergus Falls, MN
USDA Zone 4aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Fergus Falls, Minnesota — all computed from Fergus Falls's nearest NOAA weather station.
In zone 4a, Fergus Falls winters are severe; choose cold-hardy perennials and time annuals carefully around the frost dates above.
Frost probability
FERGUS FALLS · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Fergus Falls’s own odds, recorded at FERGUS FALLS.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 29 | May 14 | May 2 | Sep 13 | Sep 27 | Oct 9 |
| 32°F | May 18 | May 4 | Apr 20 | Sep 22 | Oct 5 | Oct 19 |
| 28°F | May 8 | Apr 26 | Apr 9 | Oct 1 | Oct 15 | Oct 28 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Fergus Falls, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 34 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Fergus Falls planting FAQ
When is the last spring frost in Fergus Falls, MN?
Plan for the last spring frost in Fergus Falls around May 4 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Fergus Falls, MN?
In Fergus Falls, the first 32°F freeze of fall lands around October 5 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Fergus Falls in?
Fergus Falls is in USDA hardiness zone 4a. In zone 4a, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Fergus Falls?
Fergus Falls has about 154 frost-free days — a moderate growing season — between the average last spring frost (May 4) and first fall frost (October 5).
When should I plant tomatoes in Fergus Falls?
For Fergus Falls, sow tomatoes indoors about March 9–March 23 and move the seedlings out around May 11, after the last spring frost.
Never miss a window in Fergus Falls
An email when it’s time to start seeds, transplant, and sow — timed to Fergus Falls’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Detroit Lakes · 61 km
- Alexandria · 70 km
- Moorhead · 82 km
- Fargo · 86 km
- West Fargo · 90 km
- Brainerd · 144 km
- Willmar · 152 km
- Bemidji · 162 km
Frost dates recorded at FERGUS FALLS, 3 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Fergus Falls, MN — Frost Dates & Zone 4a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00212768. Retrieved from https://blissgarden.com/minnesota/fergus-falls.