Frost dates for Laurel 3 W, MD
At Laurel 3 W, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Nov 9, for a typical growing season of 218 days. For a 90% chance that the last frost has passed, wait until Apr 19. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 5Last spring frost (median)50% chance of 32°F after this date
- Apr 19Safer planting date10% chance of 32°F after this date
- Nov 9First fall frost (median)50% chance of 32°F by this date
- 218 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 | Apr 2 | Apr 17 | May 2 |
| 32°F | Mar 21 | Apr 5 | Apr 19 |
| 28°F | Mar 10 | Mar 25 | Apr 8 |
| 24°F | Feb 25 | Mar 14 | Mar 28 |
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 16 | Oct 29 | Nov 11 |
| 32°F | Oct 27 | Nov 9 | Nov 24 |
| 28°F | Nov 5 | Nov 21 | Dec 8 |
| 24°F | Nov 15 | Dec 4 | Dec 25 |
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 | 174 days | 194 days | 213 days |
| 32°F | 198 days | 218 days | 238 days |
| 28°F | 220 days | 242 days | 265 days |
| 24°F | 241 days | 266 days | 291 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 20707 | 7b | 5 to 10°F | 2 km |
| 20866 | 7b | 5 to 10°F | 4 km |
| 20723 | 7b | 5 to 10°F | 7 km |
| 20868 | 7b | 5 to 10°F | 7 km |
| 20708 | 7b | 5 to 10°F | 8 km |
| 20905 | 7b | 5 to 10°F | 8 km |
| 20759 | 7b | 5 to 10°F | 8 km |
| 20763 | 7b | 5 to 10°F | 9 km |
| 20724 | 7b | 5 to 10°F | 9 km |
| 20861 | 7b | 5 to 10°F | 11 km |
| 21046 | 7b | 5 to 10°F | 11 km |
| 20777 | 7b | 5 to 10°F | 12 km |
| 21044 | 7b | 5 to 10°F | 14 km |
| 21029 | 7b | 5 to 10°F | 15 km |
| 21036 | 7b | 5 to 10°F | 19 km |
| 21042 | 7b | 5 to 10°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 USC00185111, at 39.0847, -76.9003, elevation 122 m (400 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 86.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Beltsville (7 km)
- Glenn Dale Bell Station (15 km)
- National Arboretum DC (20 km)
- Baltimore Wash Intl Airport (21 km)
- Rockville 1 NE (22 km)
- Dalecarlia Rsvr (25 km)
- Upper Marlboro 3 NNW (28 km)
- Oxon Hill (33 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.