Last spring frost
Apr 5
Frost Dates for Sulphur Springs, AR
First fall frost
Oct 28
Growing season
204 days
Hardiness zone
7a
In an average year around Sulphur Springs, AR, the last spring frost (32°F) is about Apr 5 and the first fall frost is about Oct 28, giving roughly a 204-day growing season. To be safe most years, wait until Mar 18 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 5 | Apr 20 | Apr 2 |
| Freeze (32°F) | Apr 26 | Apr 5 | Mar 18 |
| Hard (28°F) | Apr 10 | Mar 25 | Mar 6 |
| Severe (24°F) | Apr 1 | Mar 12 | Feb 22 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 5 | May 1 | Apr 27 | Apr 24 | Apr 20 | Apr 16 | Apr 12 | Apr 8 | Apr 2 |
| 32°F | Apr 26 | Apr 19 | Apr 13 | Apr 9 | Apr 5 | Apr 2 | Mar 29 | Mar 25 | Mar 18 |
| 28°F | Apr 10 | Apr 4 | Apr 1 | Mar 29 | Mar 25 | Mar 21 | Mar 17 | Mar 13 | Mar 6 |
| 24°F | Apr 1 | Mar 26 | Mar 21 | Mar 16 | Mar 12 | Mar 9 | Mar 4 | Feb 28 | Feb 22 |
| 20°F | Mar 21 | Mar 14 | Mar 9 | Mar 5 | Mar 1 | Feb 26 | Feb 22 | Feb 17 | Feb 10 |
| 16°F | Mar 11 | Mar 5 | Feb 28 | Feb 23 | Feb 19 | Feb 13 | Feb 8 | Feb 1 | Jan 23 |
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 5 | Oct 20 | Nov 2 |
| Freeze (32°F) | Oct 15 | Oct 28 | Nov 12 |
| Hard (28°F) | Oct 22 | Nov 7 | Nov 25 |
| Severe (24°F) | Nov 1 | Nov 18 | Dec 7 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 5 | Oct 9 | Oct 13 | Oct 16 | Oct 20 | Oct 23 | Oct 25 | Oct 28 | Nov 2 |
| 32°F | Oct 15 | Oct 19 | Oct 23 | Oct 26 | Oct 28 | Oct 31 | Nov 2 | Nov 6 | Nov 12 |
| 28°F | Oct 22 | Oct 28 | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 19 | Nov 25 |
| 24°F | Nov 1 | Nov 6 | Nov 10 | Nov 14 | Nov 18 | Nov 23 | Nov 27 | Dec 2 | Dec 7 |
| 20°F | Nov 8 | Nov 15 | Nov 20 | Nov 26 | Nov 30 | Dec 4 | Dec 8 | Dec 14 | Dec 20 |
| 16°F | Nov 18 | Nov 27 | Dec 2 | Dec 7 | Dec 12 | Dec 18 | Dec 24 | Dec 30 | Jan 7 |
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: Gravette, Ar, about 3.9 miles away@if(!empty($station['elevation_ft'])), at 1,260 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 Sulphur Springs, AR?
On average, the last spring frost (32°F) around Sulphur Springs, AR is about Apr 5. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 18.
When is the first frost in the fall?
The first fall frost around Sulphur Springs, AR typically arrives about Oct 28. 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 5 on average, or Mar 18 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 204 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 72768 Planting calendar → Arkansas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026