Last spring frost
Mar 25
Frost Dates for Hector, AR
First fall frost
Nov 10
Growing season
232 days
Hardiness zone
7b
In an average year around Hector, AR, the last spring frost (32°F) is about Mar 25 and the first fall frost is about Nov 10, giving roughly a 232-day growing season. To be safe most years, wait until Mar 6 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 26 | Apr 7 | Mar 21 |
| Freeze (32°F) | Apr 12 | Mar 25 | Mar 6 |
| Hard (28°F) | Mar 31 | Mar 12 | Feb 24 |
| Severe (24°F) | Mar 19 | Mar 2 | Feb 10 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 26 | Apr 20 | Apr 15 | Apr 11 | Apr 7 | Apr 4 | Mar 31 | Mar 28 | Mar 21 |
| 32°F | Apr 12 | Apr 5 | Apr 2 | Mar 30 | Mar 25 | Mar 22 | Mar 17 | Mar 13 | Mar 6 |
| 28°F | Mar 31 | Mar 24 | Mar 20 | Mar 15 | Mar 12 | Mar 9 | Mar 5 | Feb 28 | Feb 24 |
| 24°F | Mar 19 | Mar 13 | Mar 9 | Mar 5 | Mar 2 | Feb 27 | Feb 23 | Feb 18 | Feb 10 |
| 20°F | Mar 10 | Mar 4 | Feb 28 | Feb 23 | Feb 19 | Feb 13 | Feb 6 | Jan 31 | Jan 22 |
| 16°F | Mar 2 | Feb 23 | Feb 14 | Feb 8 | Feb 3 | Jan 30 | Jan 24 | Jan 16 | Jan 3 |
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 18 | Nov 1 | Nov 16 |
| Freeze (32°F) | Oct 28 | Nov 10 | Nov 30 |
| Hard (28°F) | Nov 5 | Nov 23 | Dec 10 |
| Severe (24°F) | Nov 12 | Dec 3 | Dec 26 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 18 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 11 | Nov 16 |
| 32°F | Oct 28 | Nov 1 | Nov 4 | Nov 6 | Nov 10 | Nov 14 | Nov 18 | Nov 23 | Nov 30 |
| 28°F | Nov 5 | Nov 9 | Nov 13 | Nov 18 | Nov 23 | Nov 27 | Dec 1 | Dec 5 | Dec 10 |
| 24°F | Nov 12 | Nov 19 | Nov 25 | Nov 30 | Dec 3 | Dec 8 | Dec 12 | Dec 19 | Dec 26 |
| 20°F | Nov 24 | Dec 1 | Dec 8 | Dec 14 | Dec 20 | Dec 26 | Jan 1 | Jan 4 | Jan 12 |
| 16°F | Dec 5 | Dec 14 | Dec 22 | Dec 27 | Jan 1 | Jan 5 | Jan 11 | Jan 17 | Jan 31 |
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: Clarksville 6 Ne, Ar, about 16.8 miles away@if(!empty($station['elevation_ft'])), at 850 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 Hector, AR?
On average, the last spring frost (32°F) around Hector, AR is about Mar 25. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 6.
When is the first frost in the fall?
The first fall frost around Hector, 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 25 on average, or Mar 6 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 232 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 72837 Planting calendar → Arkansas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026