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Will it freeze in Brownsburg in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 31°F (Sat, Nov 7, 6:00 PM EST to Sun, Nov 8, 6:00 AM EST).
Tonight: forecast low 44°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 44°F Above 36°F · Scattered Rain Showers
- Fri, Nov 6 34°F Frost possible · Partly Cloudy
- Sat, Nov 7 31°F Freeze · Partly Cloudy
- Sun, Nov 8 34°F Frost possible · Mostly Clear
- Mon, Nov 9 38°F Above 36°F · Clear
- Tue, Nov 10 37°F Above 36°F · Mostly Clear
- Wed, Nov 11 37°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 Brownsburg
The median first fall hard-freeze date (28°F) is November 6, from NOAA’s 1991–2020 Climate Normals at Indianapolis Eagle Creek Airport. 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 9 · Apr 23 · May 9 | Oct 7 · Oct 18 · Oct 29 | 177 days |
| 32°F freeze | Mar 30 · Apr 12 · Apr 29 | Oct 16 · Oct 29 · Nov 10 | 198 days |
| 28°F hard freeze | Mar 16 · Apr 1 · Apr 17 | Oct 27 · Nov 6 · Nov 23 | 221 days |
Average high temperature by month
1991–2020 normals at Indianapolis Eagle Creek Airport
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 Brownsburg, IN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Indianapolis Eagle Creek Airport (station USW00053842, elevation 823 ft), 4.8 mi from Brownsburg. 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 Brownsburg
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Avon, IN | 5.0 mi | Apr 12 | Oct 29 |
| Danville, IN | 8.1 mi | Apr 12 | Oct 29 |
| Speedway, IN | 8.1 mi | Apr 12 | Oct 29 |
| Whitestown, IN | 9.3 mi | Apr 21 | Oct 20 |
| Plainfield, IN | 9.9 mi | Apr 12 | Oct 27 |
| Zionsville, IN | 11 mi | Apr 21 | Oct 20 |
| Indianapolis, IN | 13 mi | Apr 20 | Oct 21 |
| Lebanon, IN | 14 mi | Apr 21 | Oct 20 |
| Carmel, IN | 16 mi | Apr 21 | Oct 21 |
| Mooresville, IN | 16 mi | Apr 12 | Oct 27 |
Frequently asked questions
When is the last frost in Brownsburg?
On average, the last spring frost (32°F) in Brownsburg is around April 12. In about 1 year in 10 it comes after April 29, and in 9 years in 10 it comes after March 30.
When is the first frost in Brownsburg?
The first fall frost (32°F) usually arrives around October 29. There’s a 10% chance of a freeze by October 16 and a 90% chance by November 10.
Can it frost in Brownsburg 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 Brownsburg?
Brownsburg 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 46112. See growing zones in Indiana.
More: all Indiana frost dates · Indiana growing zones · UV index today in Brownsburg · frost vs. freeze