Last spring frost
Mar 13
Frost Dates for Dermott, AR
First fall frost
Nov 10
Growing season
242 days
Hardiness zone
8b
In an average year around Dermott, AR, the last spring frost (32°F) is about Mar 13 and the first fall frost is about Nov 10, giving roughly a 242-day growing season. To be safe most years, wait until Feb 23 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) | Apr 12 | Mar 26 | Mar 7 |
| Freeze (32°F) | Mar 31 | Mar 13 | Feb 23 |
| Hard (28°F) | Mar 18 | Feb 28 | Feb 1 |
| Severe (24°F) | Mar 9 | Feb 12 | Jan 16 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 12 | Apr 6 | Apr 3 | Mar 30 | Mar 26 | Mar 23 | Mar 19 | Mar 14 | Mar 7 |
| 32°F | Mar 31 | Mar 25 | Mar 20 | Mar 17 | Mar 13 | Mar 9 | Mar 5 | Feb 28 | Feb 23 |
| 28°F | Mar 18 | Mar 13 | Mar 8 | Mar 3 | Feb 28 | Feb 25 | Feb 20 | Feb 13 | Feb 1 |
| 24°F | Mar 9 | Mar 1 | Feb 25 | Feb 19 | Feb 12 | Feb 5 | Jan 31 | Jan 25 | Jan 16 |
| 20°F | Feb 28 | Feb 17 | Feb 9 | Feb 1 | Jan 30 | Jan 23 | Jan 16 | Jan 9 | Dec 29 |
| 16°F | Feb 15 | Feb 6 | Feb 1 | Jan 28 | Jan 21 | Jan 15 | Jan 10 | Jan 5 | Dec 30 |
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 17 | Oct 31 | Nov 15 |
| Freeze (32°F) | Oct 25 | Nov 10 | Nov 30 |
| Hard (28°F) | Nov 4 | Nov 23 | Dec 16 |
| Severe (24°F) | Nov 14 | Dec 11 | Jan 14 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 17 | Oct 22 | Oct 25 | Oct 28 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 15 |
| 32°F | Oct 25 | Oct 31 | Nov 3 | Nov 6 | Nov 10 | Nov 14 | Nov 18 | Nov 23 | Nov 30 |
| 28°F | Nov 4 | Nov 10 | Nov 15 | Nov 19 | Nov 23 | Nov 29 | Dec 3 | Dec 7 | Dec 16 |
| 24°F | Nov 14 | Nov 22 | Nov 29 | Dec 5 | Dec 11 | Dec 19 | Dec 28 | Jan 3 | Jan 14 |
| 20°F | Dec 1 | Dec 11 | Dec 21 | Dec 29 | Jan 2 | Jan 7 | Jan 12 | Jan 21 | Feb 1 |
| 16°F | Dec 18 | Dec 31 | Jan 3 | Jan 7 | Jan 11 | Jan 17 | Jan 24 | Feb 1 | Feb 6 |
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: Dermott 3 Ne, Ar, about 6.3 miles away@if(!empty($station['elevation_ft'])), at 145 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 Dermott, AR?
On average, the last spring frost (32°F) around Dermott, AR is about Mar 13. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 23.
When is the first frost in the fall?
The first fall frost around Dermott, AR typically arrives about Nov 10. 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 Mar 13 on average, or Feb 23 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 242 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 71638 Planting calendar → Arkansas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026