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Will it freeze in Winfield 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 41°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 41°F Above 36°F · Chance Rain Showers then Cloudy
- Fri, Nov 6 36°F Frost possible · Mostly Cloudy
- Sat, Nov 7 32°F Freeze · Mostly Clear
- Sun, Nov 8 35°F Frost possible · Mostly Clear
- Mon, Nov 9 40°F Above 36°F · Mostly Clear
- Tue, Nov 10 38°F Above 36°F · Partly Cloudy
- 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 Winfield
The median first fall hard-freeze date (28°F) is October 26, from NOAA’s 1991–2020 Climate Normals at Lowell. 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 25 · May 8 · May 25 | Sep 23 · Oct 6 · Oct 18 | 150 days |
| 32°F freeze | Apr 14 · Apr 29 · May 14 | Oct 3 · Oct 16 · Oct 28 | 171 days |
| 28°F hard freeze | Apr 1 · Apr 16 · May 3 | Oct 13 · Oct 26 · Nov 8 | 193 days |
Average high temperature by month
1991–2020 normals at Lowell
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 Winfield, IN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Lowell (station USC00125174, elevation 665 ft), 13 mi from Winfield. 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 Winfield
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Crown Point, IN | 4.3 mi | Apr 29 | Oct 16 |
| Merrillville, IN | 5.0 mi | Apr 22 | Oct 25 |
| Hobart, IN | 6.8 mi | Apr 22 | Oct 25 |
| Cedar Lake, IN | 9.9 mi | Apr 29 | Oct 16 |
| Schererville, IN | 11 mi | Apr 23 | Oct 20 |
| St. John, IN | 11 mi | Apr 23 | Oct 20 |
| Lake Station, IN | 11 mi | Apr 22 | Oct 27 |
| Griffith, IN | 12 mi | Apr 23 | Oct 20 |
| Lowell, IN | 12 mi | Apr 29 | Oct 16 |
| Valparaiso, IN | 12 mi | Apr 22 | Oct 25 |
Frequently asked questions
When is the last frost in Winfield?
On average, the last spring frost (32°F) in Winfield 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 14.
When is the first frost in Winfield?
The first fall frost (32°F) usually arrives around October 16. There’s a 10% chance of a freeze by October 3 and a 90% chance by October 28.
Can it frost in Winfield 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 8.
What growing zone is Winfield?
Winfield is in USDA Plant Hardiness Zone 5b (average annual extreme minimum temperature −15 to −10°F), based on the 2023 USDA map for ZIP code 46307. See growing zones in Indiana.
More: all Indiana frost dates · Indiana growing zones · frost vs. freeze