Last spring frost
Mar 8
Frost Dates for Marion, TX
First fall frost
Nov 18
Growing season
253 days
Hardiness zone
9a
In an average year around Marion, TX, the last spring frost (32°F) is about Mar 8 and the first fall frost is about Nov 18, giving roughly a 253-day growing season. To be safe most years, wait until Feb 17 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 18 | Mar 25 | Feb 28 |
| Freeze (32°F) | Apr 1 | Mar 8 | Feb 17 |
| Hard (28°F) | Mar 17 | Feb 24 | Jan 29 |
| Severe (24°F) | Mar 8 | Feb 7 | Jan 3 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 18 | Apr 8 | Apr 3 | Mar 31 | Mar 25 | Mar 19 | Mar 14 | Mar 7 | Feb 28 |
| 32°F | Apr 1 | Mar 24 | Mar 18 | Mar 13 | Mar 8 | Mar 3 | Feb 28 | Feb 23 | Feb 17 |
| 28°F | Mar 17 | Mar 10 | Mar 5 | Feb 28 | Feb 24 | Feb 20 | Feb 14 | Feb 7 | Jan 29 |
| 24°F | Mar 8 | Mar 1 | Feb 22 | Feb 14 | Feb 7 | Feb 1 | Jan 27 | Jan 16 | Jan 3 |
| 20°F | Mar 1 | Feb 15 | Feb 6 | Jan 31 | Jan 23 | Jan 16 | Jan 9 | Jan 2 | Dec 25 |
| 16°F | Feb 14 | Feb 5 | Jan 29 | Jan 21 | Jan 17 | Jan 12 | Jan 8 | Jan 5 | Jan 1 |
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 25 | Nov 7 | Nov 25 |
| Freeze (32°F) | Nov 2 | Nov 18 | Dec 10 |
| Hard (28°F) | Nov 10 | Dec 2 | Jan 8 |
| Severe (24°F) | Nov 27 | Dec 28 | Feb 2 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 25 | Oct 29 | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 18 | Nov 25 |
| 32°F | Nov 2 | Nov 6 | Nov 10 | Nov 14 | Nov 18 | Nov 22 | Nov 27 | Dec 1 | Dec 10 |
| 28°F | Nov 10 | Nov 17 | Nov 23 | Nov 29 | Dec 2 | Dec 6 | Dec 15 | Dec 28 | Jan 8 |
| 24°F | Nov 27 | Dec 3 | Dec 10 | Dec 18 | Dec 28 | Jan 1 | Jan 8 | Jan 17 | Feb 2 |
| 20°F | Dec 8 | Dec 19 | Dec 27 | Jan 1 | Jan 6 | Jan 10 | Jan 17 | Jan 28 | Feb 10 |
| 16°F | Dec 31 | Jan 2 | Jan 6 | Jan 8 | Jan 12 | Jan 17 | Jan 22 | Feb 1 | Feb 12 |
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: New Braunfels, Tx, about 7.1 miles away@if(!empty($station['elevation_ft'])), at 720 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 Marion, TX?
On average, the last spring frost (32°F) around Marion, TX is about Mar 8. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 17.
When is the first frost in the fall?
The first fall frost around Marion, TX typically arrives about Nov 18. 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 8 on average, or Feb 17 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 253 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 78124 Planting calendar → Texas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026