When to plant in Sartell, MN
USDA Zone 4bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Sartell, Minnesota — all computed from Sartell's nearest NOAA weather station.
Zone 4b is cold — in Sartell, most perennials must be fully hardy, and your frost dates set a tight window for tender annual vegetables.
Frost probability
COLLEGEVILLE ST JOHN'S · 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 Sartell’s own odds, recorded at COLLEGEVILLE ST JOHN'S.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 28 | May 13 | Apr 30 | Sep 17 | Sep 28 | Oct 10 |
| 32°F | May 17 | May 3 | Apr 21 | Sep 25 | Oct 7 | Oct 19 |
| 28°F | May 7 | Apr 24 | Apr 10 | Oct 4 | Oct 18 | Nov 1 |
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 Sartell, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Sartell planting FAQ
When is the last spring frost in Sartell, MN?
Plan for the last spring frost in Sartell around May 3 (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 Sartell, MN?
In Sartell, the first 32°F freeze of fall lands around October 7 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Sartell in?
Sartell is in USDA hardiness zone 4b. In zone 4b, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Sartell?
There are roughly 157 frost-free days in Sartell (a moderate growing season), running from the average last frost around May 3 to the first fall frost near October 7.
When should I plant tomatoes in Sartell?
In Sartell, start tomato seeds indoors around March 8–March 22, then transplant seedlings outdoors around May 10 once the danger of frost has passed.
Never miss a window in Sartell
An email when it’s time to start seeds, transplant, and sow — timed to Sartell’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Sauk Rapids · 5 km
- St. Cloud · 11 km
- Big Lake · 48 km
- Monticello · 49 km
- Buffalo · 56 km
- Elk River · 60 km
- Otsego · 61 km
- St. Michael · 62 km
Frost dates recorded at COLLEGEVILLE ST JOHN'S, 15 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 Sartell, MN — Frost Dates & Zone 4b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00211691. Retrieved from https://blissgarden.com/minnesota/sartell.