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Will it freeze in Indiana 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 Light Rain
- Sat, Nov 7 36°F Frost possible · Chance Light Rain
- Sun, Nov 8 33°F Frost possible · Mostly Clear
- Mon, Nov 9 35°F Frost possible · Mostly Clear
- Tue, Nov 10 34°F Frost possible · Mostly Clear
- Wed, Nov 11 32°F Freeze · 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 Indiana
The median first fall hard-freeze date (28°F) is October 25, from NOAA’s 1991–2020 Climate Normals at Indiana 3 SE. 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 | May 4 · May 20 · Jun 2 | Sep 19 · Oct 3 · Oct 15 | 135 days |
| 32°F freeze | Apr 23 · May 8 · May 24 | Oct 1 · Oct 13 · Oct 27 | 157 days |
| 28°F hard freeze | Apr 13 · Apr 27 · May 14 | Oct 9 · Oct 25 · Nov 7 | 180 days |
Average high temperature by month
1991–2020 normals at Indiana 3 SE
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 Indiana, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Indiana 3 SE (station USC00364214, elevation 1,102 ft), 2.5 mi from Indiana. 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 Indiana
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Johnstown, PA | 24 mi | Apr 29 | Oct 21 |
| Punxsutawney, PA | 24 mi | May 10 | Oct 12 |
| Latrobe, PA | 24 mi | May 1 | Oct 13 |
| Murrysville, PA | 29 mi | Apr 22 | Oct 25 |
| Lower Burrell, PA | 30 mi | Apr 16 | Nov 2 |
| Greensburg, PA | 30 mi | May 1 | Oct 13 |
| Jeannette, PA | 32 mi | Apr 22 | Oct 25 |
| New Kensington, PA | 32 mi | Apr 16 | Nov 2 |
| Plum, PA | 32 mi | Apr 16 | Nov 1 |
| Monroeville, PA | 35 mi | Apr 22 | Oct 25 |
Frequently asked questions
When is the last frost in Indiana?
On average, the last spring frost (32°F) in Indiana is around May 8. In about 1 year in 10 it comes after May 24, and in 9 years in 10 it comes after April 23.
When is the first frost in Indiana?
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 Indiana 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 20.
What growing zone is Indiana?
Indiana 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 15705. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze