Last spring frost
Mar 18
Frost Dates for Mason, TX
First fall frost
Nov 13
Growing season
241 days
Hardiness zone
8b
In an average year around Mason, TX, the last spring frost (32°F) is about Mar 18 and the first fall frost is about Nov 13, giving roughly a 241-day growing season. To be safe most years, wait until Feb 28 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 20 | Apr 3 | Mar 12 |
| Freeze (32°F) | Apr 7 | Mar 18 | Feb 28 |
| Hard (28°F) | Mar 22 | Mar 4 | Feb 9 |
| Severe (24°F) | Mar 12 | Feb 18 | Jan 13 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 20 | Apr 15 | Apr 11 | Apr 6 | Apr 3 | Mar 31 | Mar 26 | Mar 19 | Mar 12 |
| 32°F | Apr 7 | Apr 1 | Mar 27 | Mar 21 | Mar 18 | Mar 14 | Mar 9 | Mar 4 | Feb 28 |
| 28°F | Mar 22 | Mar 16 | Mar 12 | Mar 8 | Mar 4 | Mar 1 | Feb 25 | Feb 19 | Feb 9 |
| 24°F | Mar 12 | Mar 7 | Mar 2 | Feb 25 | Feb 18 | Feb 11 | Feb 3 | Jan 27 | Jan 13 |
| 20°F | Mar 4 | Feb 20 | Feb 9 | Feb 1 | Jan 27 | Jan 21 | Jan 14 | Jan 4 | Dec 20 |
| 16°F | Feb 15 | Feb 4 | Jan 30 | Jan 24 | Jan 18 | Jan 14 | Jan 7 | Jan 1 | 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 20 | Nov 4 | Nov 20 |
| Freeze (32°F) | Oct 30 | Nov 13 | Dec 1 |
| Hard (28°F) | Nov 7 | Nov 26 | Dec 17 |
| Severe (24°F) | Nov 19 | Dec 10 | Jan 8 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 20 | Oct 25 | Oct 29 | Nov 1 | Nov 4 | Nov 6 | Nov 10 | Nov 14 | Nov 20 |
| 32°F | Oct 30 | Nov 2 | Nov 6 | Nov 10 | Nov 13 | Nov 17 | Nov 22 | Nov 26 | Dec 1 |
| 28°F | Nov 7 | Nov 13 | Nov 18 | Nov 22 | Nov 26 | Nov 30 | Dec 3 | Dec 8 | Dec 17 |
| 24°F | Nov 19 | Nov 26 | Dec 1 | Dec 5 | Dec 10 | Dec 17 | Dec 24 | Dec 30 | Jan 8 |
| 20°F | Nov 30 | Dec 9 | Dec 15 | Dec 25 | Dec 31 | Jan 3 | Jan 10 | Jan 18 | Feb 1 |
| 16°F | Dec 12 | Dec 27 | Jan 1 | Jan 4 | Jan 8 | Jan 14 | Jan 19 | Jan 30 | Feb 7 |
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: Mason, Tx, about 18.8 miles away@if(!empty($station['elevation_ft'])), at 1,531 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 Mason, TX?
On average, the last spring frost (32°F) around Mason, TX is about Mar 18. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 28.
When is the first frost in the fall?
The first fall frost around Mason, TX typically arrives about Nov 13. 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 18 on average, or Feb 28 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 241 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 76869 Planting calendar → Texas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026