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Will it freeze in Ogdensburg in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 30°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).
Tonight: forecast low 50°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 50°F Above 36°F · Mostly Cloudy
- Fri, Nov 6 44°F Above 36°F · Chance Rain Showers
- Sat, Nov 7 39°F Above 36°F · Rain Showers Likely
- Sun, Nov 8 36°F Frost possible · Chance Rain Showers
- Mon, Nov 9 37°F Above 36°F · Partly Cloudy then Slight Chance Rain Showers
- Tue, Nov 10 35°F Frost possible · Slight Chance Rain Showers then Mostly Cloudy
- Wed, Nov 11 30°F Freeze · Mostly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Ogdensburg
The median first fall hard-freeze date (28°F) is October 24, from NOAA’s 1991–2020 Climate Normals at Ogdensburg 4 NE. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Apr 28 · May 8 · May 25 | Sep 15 · Sep 30 · Oct 13 | 141 days |
| 32°F freeze | Apr 18 · Apr 29 · May 11 | Sep 25 · Oct 10 · Oct 28 | 162 days |
| 28°F hard freeze | Apr 8 · Apr 20 · May 1 | Oct 5 · Oct 24 · Nov 7 | 186 days |
Average high temperature by month
1991–2020 normals at Ogdensburg 4 NE
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Ogdensburg, NY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Ogdensburg 4 NE (station USC00306164, elevation 280 ft), 1.6 mi from Ogdensburg. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Ogdensburg
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Canton, NY | 16 mi | May 9 | Sep 30 |
| Potsdam, NY | 24 mi | May 5 | Oct 8 |
| Massena, NY | 32 mi | May 8 | Oct 1 |
| Watertown, NY | 55 mi | May 2 | Oct 13 |
| Malone, NY | 58 mi | May 6 | Oct 4 |
| Plattsburgh, NY | 98 mi | May 6 | Oct 5 |
| Oswego, NY | 101 mi | Apr 22 | Oct 29 |
| Rome, NY | 103 mi | May 6 | Oct 13 |
| Fulton, NY | 107 mi | Apr 27 | Oct 24 |
| Burlington, VT | 111 mi | Apr 29 | Oct 15 |
Frequently asked questions
When is the last frost in Ogdensburg?
On average, the last spring frost (32°F) in Ogdensburg is around April 29. In about 1 year in 10 it comes after May 11, and in 9 years in 10 it comes after April 18.
When is the first frost in Ogdensburg?
The first fall frost (32°F) usually arrives around October 10. There’s a 10% chance of a freeze by September 25 and a 90% chance by October 28.
Can it frost in Ogdensburg after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 8.
What growing zone is Ogdensburg?
Ogdensburg is in USDA Plant Hardiness Zone 5a (average annual extreme minimum temperature −20 to −15°F), based on the 2023 USDA map for ZIP code 13669. See growing zones in New York.
More: all New York frost dates · New York growing zones · frost vs. freeze