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Will it freeze in New Castle in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 30°F (Sat, Nov 7, 6:00 PM EST to Sun, Nov 8, 6:00 AM EST).
Tonight: forecast low 43°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 43°F Above 36°F · Scattered Rain Showers
- Fri, Nov 6 34°F Frost possible · Partly Cloudy
- Sat, Nov 7 30°F Freeze · Partly Cloudy
- Sun, Nov 8 32°F Freeze · Mostly Clear
- Mon, Nov 9 37°F Above 36°F · Clear
- Tue, Nov 10 36°F Frost possible · Mostly Clear
- Wed, Nov 11 35°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 New Castle
The median first fall hard-freeze date (28°F) is October 27, from NOAA’s 1991–2020 Climate Normals at New Castle 3 SW. 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 21 · May 6 · May 21 | Sep 24 · Oct 7 · Oct 18 | 153 days |
| 32°F freeze | Apr 11 · Apr 27 · May 12 | Oct 4 · Oct 17 · Oct 28 | 173 days |
| 28°F hard freeze | Mar 31 · Apr 15 · May 3 | Oct 13 · Oct 27 · Nov 8 | 194 days |
Average high temperature by month
1991–2020 normals at New Castle 3 SW
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 Castle, IN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: New Castle 3 SW (station USC00126164, elevation 991 ft), 2.2 mi from New Castle. 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 Castle
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Muncie, IN | 19 mi | Apr 16 | Oct 25 |
| Yorktown, IN | 19 mi | Apr 16 | Oct 25 |
| Anderson, IN | 21 mi | Apr 19 | Oct 23 |
| Rushville, IN | 21 mi | Apr 19 | Oct 23 |
| Pendleton, IN | 22 mi | Apr 19 | Oct 23 |
| Connersville, IN | 22 mi | Apr 27 | Oct 9 |
| Greenfield, IN | 23 mi | Apr 19 | Oct 22 |
| Richmond, IN | 26 mi | Apr 24 | Oct 20 |
| Alexandria, IN | 29 mi | Apr 24 | Oct 18 |
| McCordsville, IN | 29 mi | Apr 18 | Oct 26 |
Frequently asked questions
When is the last frost in New Castle?
On average, the last spring frost (32°F) in New Castle is around April 27. In about 1 year in 10 it comes after May 12, and in 9 years in 10 it comes after April 11.
When is the first frost in New Castle?
The first fall frost (32°F) usually arrives around October 17. There’s a 10% chance of a freeze by October 4 and a 90% chance by October 28.
Can it frost in New Castle 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 6.
What growing zone is New Castle?
New Castle is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 47362. See growing zones in Indiana.
More: all Indiana frost dates · Indiana growing zones · frost vs. freeze