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Will it freeze in Upper Saddle River in the next 7 nights?
No overnight lows at or below 32°F are forecast in Upper Saddle River during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 59°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
1 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 59°F Above 36°F · Light Rain
- Fri, Nov 6 49°F Above 36°F · Chance Light Rain then Partly Cloudy
- Sat, Nov 7 43°F Above 36°F · Chance Light Rain
- Sun, Nov 8 39°F Above 36°F · Mostly Clear
- Mon, Nov 9 37°F Above 36°F · Mostly Clear
- Tue, Nov 10 37°F Above 36°F · Mostly Clear
- Wed, Nov 11 33°F Frost possible · Partly 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 Upper Saddle River
The median first fall hard-freeze date (28°F) is November 4, from NOAA’s 1991–2020 Climate Normals at Wanaque Raymond Dam. 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 18 · Apr 30 · May 16 | Oct 3 · Oct 13 · Oct 27 | 164 days |
| 32°F freeze | Apr 5 · Apr 19 · May 3 | Oct 9 · Oct 23 · Nov 6 | 188 days |
| 28°F hard freeze | Mar 21 · Apr 4 · Apr 19 | Oct 16 · Nov 4 · Nov 21 | 213 days |
Average high temperature by month
1991–2020 normals at Wanaque Raymond Dam
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 Upper Saddle River, NJ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Wanaque Raymond Dam (station USC00289187, elevation 245 ft), 10 mi from Upper Saddle River. 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 Upper Saddle River
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Ramsey, NJ | 2.5 mi | Apr 19 | Oct 23 |
| Airmont, NY | 2.5 mi | Apr 19 | Oct 23 |
| Allendale, NJ | 2.5 mi | Apr 19 | Oct 23 |
| Montvale, NJ | 3.1 mi | Apr 20 | Oct 26 |
| Chestnut Ridge, NY | 3.1 mi | Apr 20 | Oct 26 |
| Woodcliff Lake, NJ | 3.1 mi | Apr 20 | Oct 26 |
| Park Ridge, NJ | 3.7 mi | Apr 20 | Oct 26 |
| Waldwick, NJ | 3.7 mi | Apr 19 | Oct 23 |
| Suffern, NY | 3.7 mi | Apr 19 | Oct 23 |
| Kaser, NY | 4.3 mi | Apr 19 | Oct 23 |
Frequently asked questions
When is the last frost in Upper Saddle River?
On average, the last spring frost (32°F) in Upper Saddle River is around April 19. In about 1 year in 10 it comes after May 3, and in 9 years in 10 it comes after April 5.
When is the first frost in Upper Saddle River?
The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 9 and a 90% chance by November 6.
Can it frost in Upper Saddle River 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 April 30.
What growing zone is Upper Saddle River?
Upper Saddle River is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 07458. See growing zones in New Jersey.
More: all New Jersey frost dates · New Jersey growing zones · frost vs. freeze