When to plant in North St. Paul, MN
USDA Zone 5aEverything below — frost dates, hardiness zone, and what to plant when in North St. Paul, Minnesota — is derived from the closest NOAA station with complete climate normals.
Zone 5a means North St. Paul sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
The average first fall frost in North St. Paul is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
ST PAUL · 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 North St. Paul’s own odds, recorded at ST PAUL.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 21 | May 7 | Apr 23 | Sep 20 | Oct 3 | Oct 16 |
| 32°F | May 11 | Apr 26 | Apr 12 | Sep 27 | Oct 12 | Oct 25 |
| 28°F | Apr 30 | Apr 16 | Apr 2 | Oct 7 | Oct 24 | Nov 6 |
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 North St. Paul, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 10 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.
North St. Paul planting FAQ
When is the last spring frost in North St. Paul, MN?
Plan for the last spring frost in North St. Paul around April 26 (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 North St. Paul, MN?
The first fall frost in North St. Paul typically arrives around October 12 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is North St. Paul in?
North St. Paul is in USDA hardiness zone 5a. In zone 5a, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in North St. Paul?
There are roughly 169 frost-free days in North St. Paul (a moderate growing season), running from the average last frost around April 26 to the first fall frost near October 12.
When should I plant tomatoes in North St. Paul?
In North St. Paul, start tomato seeds indoors around March 1–March 15, then transplant seedlings outdoors around May 3 once the danger of frost has passed.
Never miss a window in North St. Paul
An email when it’s time to start seeds, transplant, and sow — timed to North St. Paul’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Maplewood · 2 km
- Oakdale · 4 km
- White Bear Lake · 6 km
- Little Canada · 7 km
- Vadnais Heights · 7 km
- Lake Elmo · 8 km
- St. Paul · 11 km
- Roseville · 12 km
Frost dates recorded at ST PAUL, 8 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 North St. Paul, MN — Frost Dates & Zone 5a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00217377. Retrieved from https://blissgarden.com/minnesota/north-st-paul.