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Will it freeze in Westville 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, 5:00 PM CST to Sun, Nov 8, 5:00 AM CST).
Tonight: forecast low 39°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 5:00 PM CST to Fri, Nov 6, 5:00 AM CST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 39°F Above 36°F · Rain Showers
- Fri, Nov 6 37°F Above 36°F · Slight Chance Rain Showers
- Sat, Nov 7 32°F Freeze · Mostly Clear
- Sun, Nov 8 34°F Frost possible · Mostly Clear
- Mon, Nov 9 41°F Above 36°F · Mostly Clear
- Tue, Nov 10 37°F Above 36°F · Mostly Clear
- Wed, Nov 11 39°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 Westville
The median first fall hard-freeze date (28°F) is October 25, from NOAA’s 1991–2020 Climate Normals at Wanatah 2 Wnw. 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 26 · May 9 · May 25 | Sep 18 · Oct 1 · Oct 13 | 144 days |
| 32°F freeze | Apr 15 · Apr 29 · May 14 | Oct 1 · Oct 13 · Oct 27 | 166 days |
| 28°F hard freeze | Apr 4 · Apr 17 · May 3 | Oct 12 · Oct 25 · Nov 9 | 189 days |
Average high temperature by month
1991–2020 normals at Wanatah 2 Wnw
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 Westville, IN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Wanatah 2 Wnw (station USC00129222, elevation 735 ft), 6.6 mi from Westville. 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 Westville
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Valparaiso, IN | 8.7 mi | Apr 22 | Oct 25 |
| Chesterton, IN | 8.7 mi | Apr 22 | Oct 27 |
| La Porte, IN | 11 mi | Apr 19 | Oct 27 |
| Porter, IN | 11 mi | Apr 22 | Oct 27 |
| Michigan City, IN | 12 mi | Apr 19 | Oct 27 |
| Portage, IN | 15 mi | Apr 22 | Oct 27 |
| Lake Station, IN | 18 mi | Apr 22 | Oct 27 |
| Hobart, IN | 19 mi | Apr 22 | Oct 25 |
| Winfield, IN | 21 mi | Apr 29 | Oct 16 |
| Merrillville, IN | 22 mi | Apr 22 | Oct 25 |
Frequently asked questions
When is the last frost in Westville?
On average, the last spring frost (32°F) in Westville is around April 29. In about 1 year in 10 it comes after May 14, and in 9 years in 10 it comes after April 15.
When is the first frost in Westville?
The first fall frost (32°F) usually arrives around October 13. There’s a 10% chance of a freeze by October 1 and a 90% chance by October 27.
Can it frost in Westville 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 9.
What growing zone is Westville?
Westville 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 46391. See growing zones in Indiana.
More: all Indiana frost dates · Indiana growing zones · frost vs. freeze