Frost dates for Monroe Regional Airport, LA
At Monroe Regional Airport, the median last spring frost (32°F) is Mar 8 and the median first fall frost is Nov 15, for a typical growing season of 253 days. For a 90% chance that the last frost has passed, wait until Mar 25. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 8Last spring frost (median)50% chance of 32°F after this date
- Mar 25Safer planting date10% chance of 32°F after this date
- Nov 15First fall frost (median)50% chance of 32°F by this date
- 253 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 4 | Mar 23 | Apr 8 |
| 32°F | Feb 16 | Mar 8 | Mar 25 |
| 28°F | Jan 27 | Feb 23 | Mar 13 |
| 24°F | Jan 1 | Feb 2 | Mar 3 |
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 21 | Nov 3 | Nov 20 |
| 32°F | Nov 1 | Nov 15 | Dec 3 |
| 28°F | Nov 9 | Nov 29 | Dec 25 |
| 24°F | Nov 21 | Dec 18 | Jan 18 |
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 | 204 days | 226 days | 250 days |
| 32°F | 230 days | 253 days | 280 days |
| 28°F | 252 days | 283 days | 317 days |
| 24°F | 285 days | 321 days | 357 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 94% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 71212 | 8b | 15 to 20°F | 3 km |
| 71201 | 8b | 15 to 20°F | 7 km |
| 71203 | 8b | 15 to 20°F | 8 km |
| 71291 | 8b | 15 to 20°F | 14 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 USW00013942, at 32.5156, -92.0406, elevation 24 m (79 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 33.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Monroe Delta Cc (3 km)
- Bastrop (27 km)
- Rayville (27 km)
- Calhoun Rsch Station (29 km)
- Columbia Lock (39 km)
- Monroe 26 N (41 km)
- Farmerville (45 km)
- Winnsboro 2 SE (52 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.