Last spring frost
Mar 23
Frost Dates for Amagon, AR
First fall frost
Nov 5
Growing season
227 days
Hardiness zone
8a
In an average year around Amagon, AR, the last spring frost (32°F) is about Mar 23 and the first fall frost is about Nov 5, giving roughly a 227-day growing season. To be safe most years, wait until Mar 5 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 22 | Apr 4 | Mar 19 |
| Freeze (32°F) | Apr 9 | Mar 23 | Mar 5 |
| Hard (28°F) | Mar 28 | Mar 10 | Feb 21 |
| Severe (24°F) | Mar 17 | Feb 28 | Feb 2 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 22 | Apr 15 | Apr 10 | Apr 7 | Apr 4 | Apr 1 | Mar 30 | Mar 25 | Mar 19 |
| 32°F | Apr 9 | Apr 3 | Mar 31 | Mar 27 | Mar 23 | Mar 19 | Mar 15 | Mar 11 | Mar 5 |
| 28°F | Mar 28 | Mar 22 | Mar 18 | Mar 14 | Mar 10 | Mar 7 | Mar 3 | Feb 28 | Feb 21 |
| 24°F | Mar 17 | Mar 11 | Mar 6 | Mar 2 | Feb 28 | Feb 23 | Feb 18 | Feb 12 | Feb 2 |
| 20°F | Mar 8 | Mar 2 | Feb 25 | Feb 19 | Feb 13 | Feb 7 | Feb 1 | Jan 24 | Jan 11 |
| 16°F | Mar 1 | Feb 20 | Feb 10 | Feb 3 | Jan 30 | Jan 25 | Jan 19 | Jan 10 | 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 11 | Oct 26 | Nov 7 |
| Freeze (32°F) | Oct 22 | Nov 5 | Nov 25 |
| Hard (28°F) | Nov 1 | Nov 17 | Dec 8 |
| Severe (24°F) | Nov 9 | Dec 2 | Dec 31 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 11 | Oct 17 | Oct 21 | Oct 23 | Oct 26 | Oct 28 | Oct 31 | Nov 3 | Nov 7 |
| 32°F | Oct 22 | Oct 26 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 16 | Nov 25 |
| 28°F | Nov 1 | Nov 5 | Nov 9 | Nov 13 | Nov 17 | Nov 22 | Nov 26 | Dec 2 | Dec 8 |
| 24°F | Nov 9 | Nov 16 | Nov 22 | Nov 28 | Dec 2 | Dec 7 | Dec 13 | Dec 21 | Dec 31 |
| 20°F | Nov 22 | Dec 1 | Dec 9 | Dec 16 | Dec 23 | Dec 27 | Jan 1 | Jan 7 | Jan 17 |
| 16°F | Dec 9 | Dec 18 | Dec 25 | Dec 30 | Jan 3 | Jan 9 | Jan 16 | Jan 23 | Feb 2 |
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: Beedeville 4 Ne, Ar, about 5.5 miles away@if(!empty($station['elevation_ft'])), at 222 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 Amagon, AR?
On average, the last spring frost (32°F) around Amagon, AR is about Mar 23. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 5.
When is the first frost in the fall?
The first fall frost around Amagon, AR typically arrives about Nov 5. 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 23 on average, or Mar 5 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 227 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 72005 Planting calendar → Arkansas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026