Last spring frost
Mar 20
Frost Dates for San Angelo, TX
First fall frost
Nov 10
Growing season
232 days
Hardiness zone
8a
In an average year around San Angelo, TX, the last spring frost (32°F) is about Mar 20 and the first fall frost is about Nov 10, giving roughly a 232-day growing season. To be safe most years, wait until Mar 1 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 7 | Mar 18 |
| Freeze (32°F) | Apr 12 | Mar 20 | Mar 1 |
| Hard (28°F) | Mar 30 | Mar 6 | Feb 17 |
| Severe (24°F) | Mar 14 | Feb 23 | Jan 28 |
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 11 | Apr 7 | Apr 4 | Apr 1 | Mar 27 | Mar 18 |
| 32°F | Apr 12 | Apr 5 | Apr 1 | Mar 28 | Mar 20 | Mar 16 | Mar 11 | Mar 7 | Mar 1 |
| 28°F | Mar 30 | Mar 19 | Mar 14 | Mar 11 | Mar 6 | Mar 3 | Feb 28 | Feb 24 | Feb 17 |
| 24°F | Mar 14 | Mar 7 | Mar 3 | Feb 27 | Feb 23 | Feb 17 | Feb 11 | Feb 4 | Jan 28 |
| 20°F | Mar 2 | Feb 24 | Feb 15 | Feb 8 | Feb 3 | Jan 28 | Jan 22 | Jan 14 | Dec 31 |
| 16°F | Feb 17 | Feb 7 | Feb 1 | Jan 26 | Jan 21 | Jan 15 | Jan 7 | Dec 30 | Dec 17 |
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 19 | Nov 1 | Nov 14 |
| Freeze (32°F) | Oct 28 | Nov 10 | Nov 28 |
| Hard (28°F) | Nov 5 | Nov 22 | Dec 8 |
| Severe (24°F) | Nov 14 | Dec 3 | Dec 28 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 19 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 10 | Nov 14 |
| 32°F | Oct 28 | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 16 | Nov 21 | Nov 28 |
| 28°F | Nov 5 | Nov 10 | Nov 14 | Nov 18 | Nov 22 | Nov 26 | Nov 30 | Dec 3 | Dec 8 |
| 24°F | Nov 14 | Nov 21 | Nov 26 | Dec 1 | Dec 3 | Dec 6 | Dec 10 | Dec 18 | Dec 28 |
| 20°F | Nov 26 | Dec 2 | Dec 7 | Dec 13 | Dec 21 | Dec 28 | Jan 3 | Jan 13 | Jan 26 |
| 16°F | Dec 7 | Dec 17 | Dec 28 | Jan 2 | Jan 6 | Jan 13 | Jan 20 | Jan 27 | Feb 8 |
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: San Angelo, Tx, about 13.7 miles away@if(!empty($station['elevation_ft'])), at 1,890 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 San Angelo, TX?
On average, the last spring frost (32°F) around San Angelo, TX is about Mar 20. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 1.
When is the first frost in the fall?
The first fall frost around San Angelo, TX 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 20 on average, or Mar 1 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 76905 Planting calendar → Texas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026