Frost dates for Navarro Mills Dam, TX
At Navarro Mills Dam, the median last spring frost (32°F) is Mar 13 and the median first fall frost is Nov 14, for a typical growing season of 250 days. For a 90% chance that the last frost has passed, wait until Apr 3. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 13Last spring frost (median)50% chance of 32°F after this date
- Apr 3Safer planting date10% chance of 32°F after this date
- Nov 14First fall frost (median)50% chance of 32°F by this date
- 250 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Mar 3 | Mar 26 | Apr 15 |
| 32°F | Feb 19 | Mar 13 | Apr 3 |
| 28°F | Jan 28 | Feb 27 | Mar 19 |
| 24°F | Jan 10 | Feb 7 | Mar 10 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 20 | Nov 4 | Nov 23 |
| 32°F | Oct 30 | Nov 14 | Dec 6 |
| 28°F | Nov 6 | Nov 29 | Dec 26 |
| 24°F | Nov 17 | Dec 13 | Jan 16 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 198 days | 223 days | 252 days |
| 32°F | 221 days | 250 days | 278 days |
| 28°F | 243 days | 276 days | 311 days |
| 24°F | 271 days | 308 days | 342 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 98% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 76679 | 8b | 15 to 20°F | 11 km |
| 76639 | 8b | 15 to 20°F | 11 km |
| 76641 | 8b | 15 to 20°F | 13 km |
| 76650 | 8b | 15 to 20°F | 17 km |
| 76648 | 8b | 15 to 20°F | 17 km |
| 76660 | 8b | 15 to 20°F | 20 km |
| 76673 | 8b | 15 to 20°F | 30 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00416210, at 31.9611, -96.6881, elevation 138 m (454 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 44.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Corsicana (26 km)
- Corsicana Campbell Field (28 km)
- Bardwell Dam (34 km)
- Hillsboro (40 km)
- Mexia (44 km)
- Fairfield 3w (52 km)
- Waxahachie (54 km)
- Waco Regional Airport (64 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.