When to plant in New Brighton, MN
USDA Zone 5aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for New Brighton, Minnesota — all computed from New Brighton's nearest NOAA weather station.
Zone 5a means New Brighton sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
U OF MN 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 New Brighton’s own odds, recorded at U OF MN ST PAUL.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 24 | May 7 | Apr 25 | Sep 18 | Sep 30 | Oct 14 |
| 32°F | May 14 | Apr 28 | Apr 14 | Sep 25 | Oct 8 | Oct 22 |
| 28°F | May 1 | Apr 18 | Apr 4 | Oct 3 | Oct 21 | Nov 4 |
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 New Brighton, 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.
New Brighton planting FAQ
When is the last spring frost in New Brighton, MN?
New Brighton's average last spring frost falls near April 28 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in New Brighton, MN?
In New Brighton, the first 32°F freeze of fall lands around October 8 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is New Brighton in?
New Brighton 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 New Brighton?
There are roughly 163 frost-free days in New Brighton (a moderate growing season), running from the average last frost around April 28 to the first fall frost near October 8.
When should I plant tomatoes in New Brighton?
In New Brighton, start tomato seeds indoors around March 3–March 17, then transplant seedlings outdoors around May 5 once the danger of frost has passed.
Never miss a window in New Brighton
An email when it’s time to start seeds, transplant, and sow — timed to New Brighton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Columbia Heights · 4 km
- Mounds View · 4 km
- Fridley · 5 km
- Shoreview · 5 km
- Roseville · 7 km
- Brooklyn Center · 9 km
- Little Canada · 11 km
- Robbinsdale · 11 km
Frost dates recorded at U OF MN ST PAUL, 9 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 New Brighton, MN — Frost Dates & Zone 5a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00218450. Retrieved from https://blissgarden.com/minnesota/new-brighton.