Frost dates for St. Inigoes Webster Nolf, MD
At St. Inigoes Webster Nolf, the median last spring frost (32°F) is Mar 30 and the median first fall frost is Nov 14, for a typical growing season of 229 days. For a 90% chance that the last frost has passed, wait until Apr 11. Nearby ZIP codes are in USDA hardiness zone 8a.
- Mar 30Last spring frost (median)50% chance of 32°F after this date
- Apr 11Safer planting date10% chance of 32°F after this date
- Nov 14First fall frost (median)50% chance of 32°F by this date
- 229 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 27 | Apr 10 | Apr 24 |
| 32°F | Mar 14 | Mar 30 | Apr 11 |
| 28°F | Feb 28 | Mar 19 | Apr 1 |
| 24°F | Feb 13 | Mar 5 | Mar 22 |
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 17 | Nov 1 | Nov 15 |
| 32°F | Oct 29 | Nov 14 | Dec 1 |
| 28°F | Nov 11 | Nov 29 | Dec 15 |
| 24°F | Nov 26 | Dec 11 | Jan 4 |
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 | 183 days | 205 days | 226 days |
| 32°F | 209 days | 229 days | 250 days |
| 28°F | 229 days | 255 days | 278 days |
| 24°F | 256 days | 283 days | 310 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 |
|---|---|---|---|
| 20684 | 8a | 10 to 15°F | 2 km |
| 20630 | 8a | 10 to 15°F | 4 km |
| 20686 | 8a | 10 to 15°F | 5 km |
| 20680 | 8a | 10 to 15°F | 5 km |
| 20692 | 8a | 10 to 15°F | 8 km |
| 20628 | 8a | 10 to 15°F | 8 km |
| 20667 | 8a | 10 to 15°F | 8 km |
| 20674 | 8a | 10 to 15°F | 9 km |
| 20690 | 8a | 10 to 15°F | 9 km |
| 20687 | 8a | 10 to 15°F | 12 km |
| 22488 | 8a | 10 to 15°F | 17 km |
| 22511 | 8a | 10 to 15°F | 18 km |
| 22473 | 8a | 10 to 15°F | 29 km |
| 22432 | 8a | 10 to 15°F | 32 km |
| 22539 | 8a | 10 to 15°F | 34 km |
| 21824 | 8a | 10 to 15°F | 38 km |
| 21866 | 8a | 10 to 15°F | 41 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 USW00003757, at 38.1417, -76.4292, elevation 6 m (21 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 69.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Patuxent River NAS (18 km)
- Solomons (20 km)
- Mechanicsville 5 NE (47 km)
- Vienna (66 km)
- Royal Oak 2 SSW (67 km)
- Salisbury (77 km)
- Salisbury 2n (79 km)
- Salisbury Wicomico Regional Airport (83 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.