Last spring frost
Apr 2
Frost Dates for Grandfalls, TX
First fall frost
Nov 3
Growing season
214 days
Hardiness zone
8a
In an average year around Grandfalls, TX, the last spring frost (32°F) is about Apr 2 and the first fall frost is about Nov 3, giving roughly a 214-day growing season. To be safe most years, wait until Mar 11 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 27 | Apr 12 | Mar 30 |
| Freeze (32°F) | Apr 19 | Apr 2 | Mar 11 |
| Hard (28°F) | Apr 6 | Mar 18 | Feb 26 |
| Severe (24°F) | Mar 27 | Mar 3 | Feb 9 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 27 | Apr 22 | Apr 18 | Apr 15 | Apr 12 | Apr 9 | Apr 6 | Apr 3 | Mar 30 |
| 32°F | Apr 19 | Apr 12 | Apr 8 | Apr 5 | Apr 2 | Mar 31 | Mar 26 | Mar 20 | Mar 11 |
| 28°F | Apr 6 | Apr 1 | Mar 28 | Mar 23 | Mar 18 | Mar 13 | Mar 8 | Mar 4 | Feb 26 |
| 24°F | Mar 27 | Mar 18 | Mar 11 | Mar 7 | Mar 3 | Feb 27 | Feb 22 | Feb 16 | Feb 9 |
| 20°F | Mar 12 | Mar 5 | Feb 27 | Feb 21 | Feb 15 | Feb 10 | Feb 4 | Jan 30 | Jan 20 |
| 16°F | Feb 28 | Feb 18 | Feb 9 | Feb 2 | Jan 26 | Jan 18 | Jan 9 | Dec 31 | Dec 14 |
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 13 | Oct 26 | Nov 8 |
| Freeze (32°F) | Oct 22 | Nov 3 | Nov 17 |
| Hard (28°F) | Oct 29 | Nov 12 | Nov 28 |
| Severe (24°F) | Nov 5 | Nov 22 | Dec 7 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 13 | Oct 17 | Oct 20 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 8 |
| 32°F | Oct 22 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 5 | Nov 9 | Nov 12 | Nov 17 |
| 28°F | Oct 29 | Nov 3 | Nov 5 | Nov 8 | Nov 12 | Nov 15 | Nov 18 | Nov 22 | Nov 28 |
| 24°F | Nov 5 | Nov 11 | Nov 15 | Nov 18 | Nov 22 | Nov 26 | Nov 29 | Dec 3 | Dec 7 |
| 20°F | Nov 15 | Nov 21 | Nov 26 | Nov 30 | Dec 4 | Dec 7 | Dec 12 | Dec 18 | Dec 26 |
| 16°F | Nov 25 | Dec 1 | Dec 7 | Dec 13 | Dec 20 | Dec 26 | Jan 1 | Jan 8 | Jan 23 |
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: Grandfalls 3Sse, Tx, about 4.4 miles away@if(!empty($station['elevation_ft'])), at 2,425 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 Grandfalls, TX?
On average, the last spring frost (32°F) around Grandfalls, TX is about Apr 2. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 11.
When is the first frost in the fall?
The first fall frost around Grandfalls, TX typically arrives about Nov 3. 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 2 on average, or Mar 11 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 214 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 79742 Planting calendar → Texas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026