When to plant in Massena, NY
USDA Zone 4bEverything below — frost dates, hardiness zone, and what to plant when in Massena, New York — is derived from the closest NOAA station with complete climate normals.
Zone 4b is cold — in Massena, most perennials must be fully hardy, and your frost dates set a tight window for tender annual vegetables.
Frost probability
MASSENA INTL AP · 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 Massena’s own odds, recorded at MASSENA INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 2 | May 19 | May 6 | Sep 8 | Sep 21 | Oct 3 |
| 32°F | May 23 | May 8 | Apr 27 | Sep 17 | Oct 1 | Oct 17 |
| 28°F | May 13 | Apr 28 | Apr 15 | Sep 30 | Oct 13 | Oct 29 |
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 Massena, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 39 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.
Massena planting FAQ
When is the last spring frost in Massena, NY?
Plan for the last spring frost in Massena around May 8 (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 Massena, NY?
The first fall frost in Massena typically arrives around October 1 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Massena in?
Massena 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 Massena?
There are roughly 146 frost-free days in Massena (a short growing season), running from the average last frost around May 8 to the first fall frost near October 1.
When should I plant tomatoes in Massena?
In Massena, start tomato seeds indoors around March 13–March 27, then transplant seedlings outdoors around May 15 once the danger of frost has passed.
Never miss a window in Massena
An email when it’s time to start seeds, transplant, and sow — timed to Massena’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Plattsburgh · 116 km
- Fort Drum · 121 km
- Watertown · 133 km
- Burlington · 139 km
- South Burlington · 146 km
- Essex Junction · 149 km
- Rome · 195 km
- West Glens Falls · 204 km
Frost dates recorded at MASSENA INTL AP, 4 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 Massena, NY — Frost Dates & Zone 4b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00094725. Retrieved from https://blissgarden.com/new-york/massena.