Last spring frost
Apr 9
Frost Dates for Owensburg, IN
First fall frost
Oct 31
Growing season
202 days
Hardiness zone
6b
In an average year around Owensburg, IN, the last spring frost (32°F) is about Apr 9 and the first fall frost is about Oct 31, giving roughly a 202-day growing season. To be safe most years, wait until Mar 22 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | May 10 | Apr 21 | Apr 4 |
| Freeze (32°F) | Apr 29 | Apr 9 | Mar 22 |
| Hard (28°F) | Apr 14 | Mar 28 | Mar 10 |
| Severe (24°F) | Apr 4 | Mar 16 | Feb 26 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 10 | May 4 | Apr 30 | Apr 26 | Apr 21 | Apr 18 | Apr 15 | Apr 10 | Apr 4 |
| 32°F | Apr 29 | Apr 22 | Apr 17 | Apr 13 | Apr 9 | Apr 5 | Apr 2 | Mar 29 | Mar 22 |
| 28°F | Apr 14 | Apr 7 | Apr 4 | Apr 1 | Mar 28 | Mar 24 | Mar 20 | Mar 15 | Mar 10 |
| 24°F | Apr 4 | Mar 28 | Mar 24 | Mar 19 | Mar 16 | Mar 12 | Mar 8 | Mar 3 | Feb 26 |
| 20°F | Mar 26 | Mar 18 | Mar 13 | Mar 9 | Mar 5 | Mar 2 | Feb 27 | Feb 20 | Feb 12 |
| 16°F | Mar 15 | Mar 8 | Mar 3 | Feb 28 | Feb 25 | Feb 19 | Feb 13 | Feb 8 | Feb 2 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 6 | Oct 21 | Nov 2 |
| Freeze (32°F) | Oct 15 | Oct 31 | Nov 15 |
| Hard (28°F) | Oct 26 | Nov 10 | Nov 30 |
| Severe (24°F) | Nov 5 | Nov 23 | Dec 13 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 6 | Oct 11 | Oct 15 | Oct 18 | Oct 21 | Oct 23 | Oct 27 | Oct 30 | Nov 2 |
| 32°F | Oct 15 | Oct 20 | Oct 24 | Oct 28 | Oct 31 | Nov 2 | Nov 5 | Nov 9 | Nov 15 |
| 28°F | Oct 26 | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 14 | Nov 17 | Nov 22 | Nov 30 |
| 24°F | Nov 5 | Nov 11 | Nov 16 | Nov 19 | Nov 23 | Nov 27 | Dec 1 | Dec 4 | Dec 13 |
| 20°F | Nov 16 | Nov 24 | Nov 28 | Dec 1 | Dec 5 | Dec 9 | Dec 14 | Dec 20 | Dec 25 |
| 16°F | Nov 27 | Dec 1 | Dec 7 | Dec 11 | Dec 16 | Dec 20 | Dec 25 | Dec 29 | Jan 8 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Crane Nsa, In, about 1.8 miles away@if(!empty($station['elevation_ft'])), at 730 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Owensburg, IN?
On average, the last spring frost (32°F) around Owensburg, IN is about Apr 9. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 22.
When is the first frost in the fall?
The first fall frost around Owensburg, IN typically arrives about Oct 31. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Apr 9 on average, or Mar 22 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 202 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 47522 Planting calendar → Indiana frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026