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Will it freeze in Princeton in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 32°F (Sat, Nov 7, 6:00 PM CST to Sun, Nov 8, 6:00 AM CST).
Tonight: forecast low 43°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 43°F Above 36°F · Mostly Clear
- Fri, Nov 6 34°F Frost possible · Mostly Clear
- Sat, Nov 7 32°F Freeze · Mostly Clear
- Sun, Nov 8 34°F Frost possible · Mostly Clear
- Mon, Nov 9 38°F Above 36°F · Mostly Clear
- Tue, Nov 10 39°F Above 36°F · Mostly Clear
- Wed, Nov 11 40°F Above 36°F · 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 Princeton
The median first fall hard-freeze date (28°F) is November 2, from NOAA’s 1991–2020 Climate Normals at Princeton 1 SE. 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 8 · Apr 23 · May 9 | Oct 5 · Oct 16 · Oct 27 | 175 days |
| 32°F freeze | Mar 25 · Apr 11 · Apr 30 | Oct 12 · Oct 24 · Nov 5 | 196 days |
| 28°F hard freeze | Mar 12 · Mar 30 · Apr 16 | Oct 20 · Nov 2 · Nov 18 | 217 days |
Average high temperature by month
1991–2020 normals at Princeton 1 SE
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 Princeton, KY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Princeton 1 SE (station USC00156580, elevation 497 ft), 1.6 mi from Princeton. 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 Princeton
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Madisonville, KY | 27 mi | Apr 2 | Nov 1 |
| Hopkinsville, KY | 29 mi | Apr 4 | Nov 2 |
| Oak Grove, KY | 39 mi | Apr 6 | Oct 28 |
| Murray, KY | 42 mi | Apr 5 | Nov 1 |
| Paducah, KY | 42 mi | Apr 6 | Oct 27 |
| Central City, KY | 43 mi | Apr 15 | Oct 20 |
| Metropolis, IL | 44 mi | Apr 6 | Oct 27 |
| Clarksville, TN | 48 mi | Apr 3 | Nov 1 |
| Mayfield, KY | 49 mi | Apr 9 | Oct 19 |
| Henderson, KY | 53 mi | Apr 9 | Oct 26 |
Frequently asked questions
When is the last frost in Princeton?
On average, the last spring frost (32°F) in Princeton is around April 11. In about 1 year in 10 it comes after April 30, and in 9 years in 10 it comes after March 25.
When is the first frost in Princeton?
The first fall frost (32°F) usually arrives around October 24. There’s a 10% chance of a freeze by October 12 and a 90% chance by November 5.
Can it frost in Princeton 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 23.
What growing zone is Princeton?
Princeton 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 42445. See growing zones in Kentucky.
More: all Kentucky frost dates · Kentucky growing zones · frost vs. freeze