Frost dates for Montgomery 6sw, AL
At Montgomery 6sw, the median last spring frost (32°F) is Mar 4 and the median first fall frost is Nov 18, for a typical growing season of 262 days. For a 90% chance that the last frost has passed, wait until Mar 23. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 4Last spring frost (median)50% chance of 32°F after this date
- Mar 23Safer planting date10% chance of 32°F after this date
- Nov 18First fall frost (median)50% chance of 32°F by this date
- 262 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 | Feb 25 | Mar 17 | Apr 7 |
| 32°F | Feb 9 | Mar 4 | Mar 23 |
| 28°F | Jan 24 | Feb 17 | Mar 14 |
| 24°F | Jan 3 | Jan 31 | Feb 27 |
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 22 | Nov 6 | Nov 27 |
| 32°F | Nov 1 | Nov 18 | Dec 10 |
| 28°F | Nov 10 | Dec 4 | Jan 4 |
| 24°F | Nov 24 | Dec 27 | Jan 28 |
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 | 208 days | 233 days | 262 days |
| 32°F | 234 days | 262 days | 293 days |
| 28°F | 259 days | 292 days | 329 days |
| 24°F | 290 days | 329 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 99% |
| 24°F | 91% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 36116 | 8b | 15 to 20°F | 1 km |
| 36105 | 8b | 15 to 20°F | 8 km |
| 36111 | 8b | 15 to 20°F | 10 km |
| 36106 | 8b | 15 to 20°F | 11 km |
| 36064 | 8b | 15 to 20°F | 13 km |
| 36109 | 8b | 15 to 20°F | 14 km |
| 36117 | 8b | 15 to 20°F | 15 km |
| 36107 | 8b | 15 to 20°F | 15 km |
| 36115 | 8b | 15 to 20°F | 17 km |
| 36057 | 8b | 15 to 20°F | 18 km |
| 36052 | 8b | 15 to 20°F | 19 km |
| 36069 | 8b | 15 to 20°F | 19 km |
| 36110 | 8b | 15 to 20°F | 21 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 USC00015553, at 32.2600, -86.2181, elevation 69 m (225 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 40.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Montgomery Airport (18 km)
- Highland Home #2 (36 km)
- Milstead (37 km)
- Highland Home 2 S (39 km)
- Highland Home (42 km)
- Troy Muni Airport (48 km)
- Union Springs 9 S (52 km)
- Troy (55 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.