Frost dates for Solomons, MD
At Solomons, the median last spring frost (32°F) is Mar 22 and the median first fall frost is Nov 26, for a typical growing season of 248 days. For a 90% chance that the last frost has passed, wait until Apr 5. Nearby ZIP codes are in USDA hardiness zones 7b to 8a.
- Mar 22Last spring frost (median)50% chance of 32°F after this date
- Apr 5Safer planting date10% chance of 32°F after this date
- Nov 26First fall frost (median)50% chance of 32°F by this date
- 248 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 20 | Apr 3 | Apr 18 |
| 32°F | Mar 6 | Mar 22 | Apr 5 |
| 28°F | Feb 21 | Mar 10 | Mar 25 |
| 24°F | Feb 5 | Feb 28 | Mar 17 |
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 31 | Nov 13 | Dec 1 |
| 32°F | Nov 10 | Nov 26 | Dec 12 |
| 28°F | Nov 24 | Dec 9 | Dec 29 |
| 24°F | Dec 6 | Dec 25 | Jan 15 |
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 | 223 days | 244 days |
| 32°F | 227 days | 248 days | 271 days |
| 28°F | 253 days | 276 days | 299 days |
| 24°F | 277 days | 299 days | 325 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 |
|---|---|---|---|
| 20688 | 8a | 10 to 15°F | 1 km |
| 20629 | 8a | 10 to 15°F | 3 km |
| 20619 | 7b | 5 to 10°F | 7 km |
| 20657 | 8a | 10 to 15°F | 7 km |
| 20634 | 8a | 10 to 15°F | 10 km |
| 20636 | 7b | 5 to 10°F | 11 km |
| 20620 | 8a | 10 to 15°F | 11 km |
| 20615 | 8a | 10 to 15°F | 13 km |
| 20685 | 8a | 10 to 15°F | 14 km |
| 20650 | 7b | 5 to 10°F | 17 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 USC00188405, at 38.3197, -76.4525, elevation 4 m (12 ft).
- Data quality: Representative (10+ years), 13 years of freeze data.
- Average days per year at or below 32°F: 58.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Patuxent River NAS (4 km)
- St. Inigoes Webster Nolf (20 km)
- Mechanicsville 5 NE (31 km)
- Royal Oak 2 SSW (50 km)
- Vienna (58 km)
- Upper Marlboro 3 NNW (65 km)
- Oxon Hill (71 km)
- Stevensville 2sw (73 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.