When to plant in New Richmond, WI
USDA Zone 4bEverything below — frost dates, hardiness zone, and what to plant when in New Richmond, Wisconsin — is derived from the closest NOAA station with complete climate normals.
These dates come from a station roughly 22 km away, the closest with full normals; terrain around New Richmond (elevation, water, pavement) can move your real frost dates a few days either way. Zone 4b is cold — in New Richmond, most perennials must be fully hardy, and your frost dates set a tight window for tender annual vegetables.
The average first fall frost in New Richmond is now 7 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
STILLWATER 1 SE · 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 Richmond’s own odds, recorded at STILLWATER 1 SE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 17 | May 2 | Apr 19 | Sep 25 | Oct 8 | Oct 23 |
| 32°F | May 6 | Apr 22 | Apr 7 | Oct 3 | Oct 19 | Nov 3 |
| 28°F | Apr 27 | Apr 12 | Mar 31 | Oct 15 | Oct 30 | Nov 11 |
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 Richmond, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 24 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 Richmond planting FAQ
When is the last spring frost in New Richmond, WI?
On average, the last spring frost in New Richmond is around April 22 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in New Richmond, WI?
In New Richmond, the first 32°F freeze of fall lands around October 19 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is New Richmond in?
New Richmond 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 New Richmond?
There are roughly 180 frost-free days in New Richmond (a moderate growing season), running from the average last frost around April 22 to the first fall frost near October 19.
When should I plant tomatoes in New Richmond?
In New Richmond, start tomato seeds indoors around February 25–March 11, then transplant seedlings outdoors around April 29 once the danger of frost has passed.
Never miss a window in New Richmond
An email when it’s time to start seeds, transplant, and sow — timed to New Richmond’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Hudson · 23 km
- Stillwater · 23 km
- River Falls · 30 km
- Lake Elmo · 32 km
- Hugo · 33 km
- Forest Lake · 36 km
- Oakdale · 36 km
- White Bear Lake · 37 km
Frost dates recorded at STILLWATER 1 SE, 22 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 Richmond, WI — Frost Dates & Zone 4b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00218037. Retrieved from https://blissgarden.com/wisconsin/new-richmond.