Checking current alerts… View NWS forecast and alerts.
Will it freeze in New Kensington in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 32°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).
Tonight: forecast low 46°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
5 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 46°F Above 36°F · Partly Cloudy
- Fri, Nov 6 37°F Above 36°F · Chance Rain Showers then Mostly Cloudy
- Sat, Nov 7 36°F Frost possible · Chance Light Rain then Mostly Cloudy
- Sun, Nov 8 33°F Frost possible · Partly Cloudy
- Mon, Nov 9 35°F Frost possible · Mostly Clear
- Tue, Nov 10 34°F Frost possible · Mostly Clear
- Wed, Nov 11 32°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 New Kensington
The median first fall hard-freeze date (28°F) is November 14, from NOAA’s 1991–2020 Climate Normals at Natrona Lock 4. 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 14 · Apr 29 · May 16 | Oct 7 · Oct 21 · Nov 3 | 174 days |
| 32°F freeze | Mar 31 · Apr 16 · May 2 | Oct 20 · Nov 2 · Nov 16 | 199 days |
| 28°F hard freeze | Mar 19 · Apr 3 · Apr 16 | Nov 2 · Nov 14 · Dec 1 | 224 days |
Average high temperature by month
1991–2020 normals at Natrona Lock 4
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 New Kensington, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Natrona Lock 4 (station USC00366151, elevation 760 ft), 3.4 mi from New Kensington. 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 New Kensington
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Lower Burrell, PA | 1.9 mi | Apr 16 | Nov 2 |
| Plum, PA | 5.0 mi | Apr 16 | Nov 1 |
| Oakmont, PA | 5.6 mi | Apr 16 | Nov 1 |
| Penn Hills, PA | 7.5 mi | Apr 16 | Nov 1 |
| Fox Chapel, PA | 8.1 mi | Apr 16 | Nov 1 |
| Monroeville, PA | 9.9 mi | Apr 22 | Oct 25 |
| Murrysville, PA | 9.9 mi | Apr 22 | Oct 25 |
| Wilkinsburg, PA | 11 mi | Apr 5 | Nov 10 |
| Forest Hills, PA | 11 mi | Apr 5 | Nov 10 |
| Swissvale, PA | 12 mi | Apr 5 | Nov 10 |
Frequently asked questions
When is the last frost in New Kensington?
On average, the last spring frost (32°F) in New Kensington is around April 16. In about 1 year in 10 it comes after May 2, and in 9 years in 10 it comes after March 31.
When is the first frost in New Kensington?
The first fall frost (32°F) usually arrives around November 2. There’s a 10% chance of a freeze by October 20 and a 90% chance by November 16.
Can it frost in New Kensington 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 29.
What growing zone is New Kensington?
New Kensington is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 15068. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze