Last spring frost
Mar 1
Frost Dates for Canyon Lake, TX
First fall frost
Dec 1
Growing season
276 days
Hardiness zone
9a
In an average year around Canyon Lake, TX, the last spring frost (32°F) is about Mar 1 and the first fall frost is about Dec 1, giving roughly a 276-day growing season. To be safe most years, wait until Jan 31 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 4 | Mar 12 | Feb 21 |
| Freeze (32°F) | Mar 22 | Mar 1 | Jan 31 |
| Hard (28°F) | Mar 9 | Feb 10 | Jan 4 |
| Severe (24°F) | Feb 28 | Jan 25 | Dec 25 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 4 | Mar 28 | Mar 21 | Mar 17 | Mar 12 | Mar 8 | Mar 4 | Feb 28 | Feb 21 |
| 32°F | Mar 22 | Mar 13 | Mar 8 | Mar 4 | Mar 1 | Feb 25 | Feb 20 | Feb 13 | Jan 31 |
| 28°F | Mar 9 | Mar 2 | Feb 24 | Feb 16 | Feb 10 | Feb 1 | Jan 27 | Jan 18 | Jan 4 |
| 24°F | Feb 28 | Feb 18 | Feb 9 | Feb 1 | Jan 25 | Jan 18 | Jan 9 | Jan 2 | Dec 25 |
| 20°F | Feb 16 | Feb 9 | Jan 31 | Jan 22 | Jan 18 | Jan 10 | Jan 6 | Jan 2 | Dec 29 |
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) | Nov 1 | Nov 16 | Dec 5 |
| Freeze (32°F) | Nov 9 | Dec 1 | Dec 26 |
| Hard (28°F) | Nov 23 | Dec 19 | Jan 21 |
| Severe (24°F) | Dec 11 | Jan 5 | Feb 16 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Nov 1 | Nov 4 | Nov 9 | Nov 13 | Nov 16 | Nov 20 | Nov 25 | Nov 30 | Dec 5 |
| 32°F | Nov 9 | Nov 17 | Nov 22 | Nov 28 | Dec 1 | Dec 5 | Dec 10 | Dec 15 | Dec 26 |
| 28°F | Nov 23 | Dec 1 | Dec 7 | Dec 13 | Dec 19 | Dec 26 | Jan 1 | Jan 9 | Jan 21 |
| 24°F | Dec 11 | Dec 21 | Dec 27 | Jan 1 | Jan 5 | Jan 11 | Jan 19 | Feb 1 | Feb 16 |
| 20°F | Dec 23 | Dec 31 | Jan 2 | Jan 6 | Jan 12 | Jan 18 | Jan 21 | Feb 2 | 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: Canyon Dam, Tx, about 6.6 miles away@if(!empty($station['elevation_ft'])), at 1,000 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 Canyon Lake, TX?
On average, the last spring frost (32°F) around Canyon Lake, TX is about Mar 1. In cooler years it can run later, so for a safer bet many gardeners wait until Jan 31.
When is the first frost in the fall?
The first fall frost around Canyon Lake, TX typically arrives about Dec 1. 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 1 on average, or Jan 31 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 276 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 78623 Planting calendar → Texas frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026