USDA Hardiness Zone 6b
Frost Dates for 47665 — Owensville, Indiana
NOAA 1991–2020 normals from Mt Carmel, IL (430 ft), 9 miles north.
Updated
In Owensville, the last spring frost (32°F) is around April 2 in half of years and has passed by April 17 in nine years out of ten. The first fall frost comes around October 31, as early as October 18 one year in ten, leaving a typical freeze-free season of 209 days (NOAA, Mt Carmel, IL).
- Last spring frost
- April 2
- First fall frost
- October 31
- Growing season
- 209 days
- Hardiness zone
- 6b
50% probability
50% probability
freeze-free, 50%
-5 to 0°F (-20.6 to -17.8°C) coldest night
- First snow
- December 13
- Last snow
- February 23
- Winters with snow
- 95%
- Snow per year
- 8.9"
median, 1991–2020
median, 1991–2020
18 of 19 observed
NOAA normal
Frost risk by date in Owensville
Half of springs at Mt Carmel, IL see their last 32°F night by April 2; only one in ten is past it by March 19, and one in ten still has one after April 17. Planting tender crops after April 7 leaves a 30% risk of a frost on them, after April 11 20%, and after April 17 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 70% of the 125 Indiana stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 31 in half of years, as early as October 18 one year in ten, and holds off past November 14 one year in ten. A hard freeze of 28°F follows 11 days later, around November 11; in spring the one-in-ten date for 28°F is April 5, 12 days before the 32°F one. The freeze-free season lasts 209 days in a typical year, longer than at 96% of the 125 Indiana stations; it reaches 231 days one year in ten and falls short of 189 one year in ten. On average 108 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about April 14, and return around October 21. Severe cold of 16°F or below comes every winter, usually between December 15 and February 23.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 2 | Apr 5 | Apr 8 | Apr 11 | Apr 14 | Apr 18 | Apr 21 | Apr 25 | Apr 30 |
| 32°F | Mar 19 | Mar 24 | Mar 29 | Mar 31 | Apr 2 | Apr 4 | Apr 7 | Apr 11 | Apr 17 |
| 28°F | Mar 8 | Mar 13 | Mar 16 | Mar 19 | Mar 22 | Mar 26 | Mar 29 | Apr 1 | Apr 5 |
| 24°F | Feb 24 | Mar 1 | Mar 6 | Mar 9 | Mar 13 | Mar 16 | Mar 19 | Mar 22 | Mar 27 |
| 20°F | Feb 9 | Feb 18 | Feb 24 | Feb 28 | Mar 3 | Mar 6 | Mar 10 | Mar 14 | Mar 18 |
| 16°F | Jan 28 | Feb 5 | Feb 10 | Feb 15 | Feb 23 | Feb 27 | Mar 2 | Mar 6 | Mar 11 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 8 | Oct 13 | Oct 16 | Oct 19 | Oct 21 | Oct 23 | Oct 26 | Oct 29 | Nov 1 |
| 32°F | Oct 18 | Oct 23 | Oct 26 | Oct 29 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 14 |
| 28°F | Oct 30 | Nov 1 | Nov 5 | Nov 8 | Nov 11 | Nov 13 | Nov 16 | Nov 21 | Nov 26 |
| 24°F | Nov 6 | Nov 12 | Nov 15 | Nov 19 | Nov 22 | Nov 26 | Nov 29 | Dec 2 | Dec 8 |
| 20°F | Nov 16 | Nov 21 | Nov 26 | Nov 29 | Dec 1 | Dec 6 | Dec 9 | Dec 16 | Dec 22 |
| 16°F | Nov 24 | Nov 30 | Dec 4 | Dec 9 | Dec 15 | Dec 20 | Dec 24 | Dec 30 | Jan 8 |
Freeze probabilities 1991–2020 at Mt Carmel, IL, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 47665 →Compare Owensville with another place →
Weather by month in Owensville
July is the warmest month at Mt Carmel, IL, averaging 87°F by day and 69°F at night; January is the coldest at 40°F and 25°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 60% of years.
Warmth for growing adds up to 4,258 growing degree days a year (base 50°F), more than at 94% of the 125 Indiana stations. 38% of them (1,607) have built up by the end of June, and July adds the most, 874. Precipitation totals 48.8 inches a year, most in May (5.8") and least in February (3.1"); May to September bring 44% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 40 | 25 | 3.6 | 100% | 26 | 6 |
| Feb | 45 | 27 | 3.1 | 100% | 22 | 11 |
| Mar | 55 | 36 | 4.1 | 100% | 16 | 72 |
| Apr | 67 | 46 | 5.1 | 60% | 4 | 243 |
| May | 76 | 57 | 5.8 | 0% | 0 | 517 |
| Jun | 85 | 66 | 4.7 | 0% | 0 | 759 |
| Jul | 87 | 69 | 4.5 | 0% | 0 | 874 |
| Aug | 86 | 67 | 3.2 | 0% | 0 | 821 |
| Sep | 81 | 59 | 3.5 | 0% | 0 | 599 |
| Oct | 69 | 47 | 3.8 | 53% | 3 | 276 |
| Nov | 55 | 36 | 3.9 | 100% | 14 | 70 |
| Dec | 44 | 28 | 3.5 | 100% | 25 | 11 |
Monthly normals 1991–2020 at Mt Carmel, IL (430 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Princeton 1 W, IN, 9 miles northeast of Owensville, has a last frost 11 days later (April 13), a first frost 6 days earlier (October 25), a season 15 days shorter.
When it snows in Owensville, Indiana
The first measurable snow (0.1 inch or more) in Owensville usually arrives around December 13, and the last of the season around February 23. Those are the middle dates across the winters of 1991–2020 at Mt Carmel, IL, 8.6 miles away: half of years saw snow earlier, half later. Snow fell in 95% of those winters. The last 32°F night of spring typically comes 38 days after the last snow.
Planting calendar for 47665
| When | What to do |
|---|---|
| January 22 – February 5 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 5 – February 19 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 5 – March 19 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 2 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 8 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 17 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 31 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 47665 is 9 miles from Mt Carmel, IL, which stands at 430 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 62863 (Mount Carmel). The 2023 USDA Plant Hardiness Zone Map lists ZIP 47665 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.