Last spring frost
Mar 24
Frost Dates for Granbury, TX
First fall frost
Nov 9
Growing season
228 days
Hardiness zone
8b
In an average year around Granbury, TX, the last spring frost (32°F) is about Mar 24 and the first fall frost is about Nov 9, giving roughly a 228-day growing season. To be safe most years, wait until Mar 2 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 25 | Apr 5 | Mar 16 |
| Freeze (32°F) | Apr 17 | Mar 24 | Mar 2 |
| Hard (28°F) | Apr 2 | Mar 10 | Feb 19 |
| Severe (24°F) | Mar 17 | Feb 27 | Jan 31 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 25 | Apr 19 | Apr 14 | Apr 9 | Apr 5 | Apr 2 | Mar 29 | Mar 23 | Mar 16 |
| 32°F | Apr 17 | Apr 8 | Apr 2 | Mar 29 | Mar 24 | Mar 19 | Mar 14 | Mar 9 | Mar 2 |
| 28°F | Apr 2 | Mar 25 | Mar 18 | Mar 13 | Mar 10 | Mar 6 | Mar 2 | Feb 25 | Feb 19 |
| 24°F | Mar 17 | Mar 11 | Mar 6 | Mar 2 | Feb 27 | Feb 22 | Feb 16 | Feb 8 | Jan 31 |
| 20°F | Mar 6 | Mar 1 | Feb 20 | Feb 14 | Feb 8 | Feb 2 | Jan 28 | Jan 20 | Jan 6 |
| 16°F | Feb 23 | Feb 11 | Feb 3 | Jan 29 | Jan 23 | Jan 16 | Jan 10 | Jan 2 | Dec 22 |
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 25 | Nov 9 | Nov 29 |
| Hard (28°F) | Nov 2 | Nov 20 | Dec 8 |
| Severe (24°F) | Nov 12 | Dec 3 | Dec 27 |
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 10 | Nov 16 |
| 32°F | Oct 25 | Oct 30 | Nov 2 | Nov 5 | Nov 9 | Nov 12 | Nov 16 | Nov 21 | Nov 29 |
| 28°F | Nov 2 | Nov 7 | Nov 12 | Nov 15 | Nov 20 | Nov 24 | Nov 29 | Dec 3 | Dec 8 |
| 24°F | Nov 12 | Nov 18 | Nov 24 | Nov 29 | Dec 3 | Dec 6 | Dec 11 | Dec 19 | Dec 27 |
| 20°F | Nov 24 | Dec 2 | Dec 8 | Dec 13 | Dec 19 | Dec 25 | Jan 1 | Jan 6 | Jan 18 |
| 16°F | Dec 7 | Dec 13 | Dec 20 | Dec 26 | Jan 1 | Jan 4 | Jan 12 | Jan 18 | Feb 1 |
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: Granbury 5N, Tx, about 7.8 miles away@if(!empty($station['elevation_ft'])), at 779 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 Granbury, TX?
On average, the last spring frost (32°F) around Granbury, TX is about Mar 24. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 2.
When is the first frost in the fall?
The first fall frost around Granbury, TX typically arrives about Nov 9. 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 24 on average, or Mar 2 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 228 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 76048 Planting calendar → Texas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026