Last spring frost
Apr 2
Frost Dates for Alpine, TX
First fall frost
Nov 3
Growing season
216 days
Hardiness zone
8b
In an average year around Alpine, TX, the last spring frost (32°F) is about Apr 2 and the first fall frost is about Nov 3, giving roughly a 216-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 30 | Apr 14 | Mar 29 |
| Freeze (32°F) | Apr 20 | Apr 2 | Mar 11 |
| Hard (28°F) | Apr 6 | Mar 14 | Feb 21 |
| Severe (24°F) | Mar 21 | Feb 27 | Feb 3 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 30 | Apr 24 | Apr 20 | Apr 16 | Apr 14 | Apr 11 | Apr 7 | Apr 3 | Mar 29 |
| 32°F | Apr 20 | Apr 13 | Apr 9 | Apr 5 | Apr 2 | Mar 29 | Mar 24 | Mar 17 | Mar 11 |
| 28°F | Apr 6 | Mar 31 | Mar 24 | Mar 18 | Mar 14 | Mar 9 | Mar 5 | Feb 28 | Feb 21 |
| 24°F | Mar 21 | Mar 13 | Mar 8 | Mar 2 | Feb 27 | Feb 23 | Feb 18 | Feb 12 | Feb 3 |
| 20°F | Mar 8 | Feb 28 | Feb 23 | Feb 18 | Feb 12 | Feb 5 | Jan 31 | Jan 24 | Jan 9 |
| 16°F | Feb 27 | Feb 17 | Feb 8 | Feb 2 | Jan 28 | Jan 21 | Jan 10 | Dec 31 | Dec 19 |
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 10 | Oct 25 | Nov 8 |
| Freeze (32°F) | Oct 19 | Nov 3 | Nov 19 |
| Hard (28°F) | Oct 30 | Nov 14 | Dec 1 |
| Severe (24°F) | Nov 8 | Nov 25 | Dec 13 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 10 | Oct 16 | Oct 19 | Oct 22 | Oct 25 | Oct 28 | Oct 31 | Nov 3 | Nov 8 |
| 32°F | Oct 19 | Oct 24 | Oct 28 | Nov 1 | Nov 3 | Nov 5 | Nov 10 | Nov 14 | Nov 19 |
| 28°F | Oct 30 | Nov 3 | Nov 7 | Nov 11 | Nov 14 | Nov 17 | Nov 20 | Nov 24 | Dec 1 |
| 24°F | Nov 8 | Nov 13 | Nov 17 | Nov 21 | Nov 25 | Nov 29 | Dec 3 | Dec 7 | Dec 13 |
| 20°F | Nov 19 | Nov 26 | Dec 1 | Dec 5 | Dec 9 | Dec 14 | Dec 20 | Dec 28 | Jan 8 |
| 16°F | Nov 30 | Dec 7 | Dec 12 | Dec 20 | Dec 26 | Jan 2 | Jan 10 | Jan 21 | 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: Alpine, Tx, about 11.6 miles away@if(!empty($station['elevation_ft'])), at 4,450 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 Alpine, TX?
On average, the last spring frost (32°F) around Alpine, 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 Alpine, 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 216 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 79830 Planting calendar → Texas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026