When to plant in Hugo, MN
USDA Zone 4bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Hugo, Minnesota — all computed from Hugo's nearest NOAA weather station.
These dates come from a station roughly 16 km away, the closest with full normals; terrain around Hugo (elevation, water, pavement) can move your real frost dates a few days either way. In zone 4b, Hugo winters are severe; choose cold-hardy perennials and time annuals carefully around the frost dates above.
Frost probability
STILLWATER 2SW · 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 Hugo’s own odds, recorded at STILLWATER 2SW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 23 | May 8 | Apr 26 | Sep 20 | Oct 2 | Oct 14 |
| 32°F | May 13 | Apr 30 | Apr 17 | Sep 28 | Oct 11 | Oct 23 |
| 28°F | May 2 | Apr 20 | Apr 6 | Oct 10 | Oct 23 | 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 Hugo, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 19 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.
Hugo planting FAQ
When is the last spring frost in Hugo, MN?
On average, the last spring frost in Hugo is around April 30 (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 Hugo, MN?
The first fall frost in Hugo typically arrives around October 11 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Hugo in?
Hugo 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 Hugo?
Hugo has about 164 frost-free days — a moderate growing season — between the average last spring frost (April 30) and first fall frost (October 11).
When should I plant tomatoes in Hugo?
For Hugo, sow tomatoes indoors about March 5–March 19 and move the seedlings out around May 7, after the last spring frost.
Never miss a window in Hugo
An email when it’s time to start seeds, transplant, and sow — timed to Hugo’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Forest Lake · 10 km
- Lino Lakes · 12 km
- White Bear Lake · 12 km
- Vadnais Heights · 14 km
- Stillwater · 16 km
- Shoreview · 17 km
- North St. Paul · 17 km
- Maplewood · 17 km
Frost dates recorded at STILLWATER 2SW, 16 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 Hugo, MN — Frost Dates & Zone 4b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00218039. Retrieved from https://blissgarden.com/minnesota/hugo.