Frost dates for Norfolk NAS, VA
At Norfolk NAS, the median last spring frost (32°F) is Mar 16 and the median first fall frost is Nov 26, for a typical growing season of 255 days. For a 90% chance that the last frost has passed, wait until Apr 1. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 16Last spring frost (median)50% chance of 32°F after this date
- Apr 1Safer planting date10% chance of 32°F after this date
- Nov 26First fall frost (median)50% chance of 32°F by this date
- 255 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 12 | Mar 29 | Apr 10 |
| 32°F | Feb 26 | Mar 16 | Apr 1 |
| 28°F | Feb 9 | Mar 2 | Mar 19 |
| 24°F | Jan 21 | Feb 14 | Mar 6 |
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 | Nov 1 | Nov 14 | Nov 29 |
| 32°F | Nov 8 | Nov 26 | Dec 17 |
| 28°F | Nov 21 | Dec 12 | Jan 5 |
| 24°F | Dec 5 | Jan 1 | Jan 26 |
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 | 212 days | 230 days | 253 days |
| 32°F | 231 days | 255 days | 283 days |
| 28°F | 258 days | 286 days | 311 days |
| 24°F | 284 days | 313 days | 343 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 98% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 23503 | 8b | 15 to 20°F | 2 km |
| 23511 | 8b | 15 to 20°F | 3 km |
| 23551 | 8b | 15 to 20°F | 3 km |
| 23505 | 8b | 15 to 20°F | 4 km |
| 23651 | 8b | 15 to 20°F | 6 km |
| 23703 | 8b | 15 to 20°F | 10 km |
| 23607 | 8b | 15 to 20°F | 13 km |
| 23433 | 8b | 15 to 20°F | 18 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 USW00013750, at 36.9500, -76.2833, elevation 5 m (17 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 32.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Norfolk Intl Airport (10 km)
- Norfolk S (10 km)
- Langley AFB (16 km)
- Oceana NAS (27 km)
- Newport News Intl Airport (27 km)
- Fentress Naas (31 km)
- Suffolk Lake Kilby (37 km)
- Wallaceton-Lake Drummond (42 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.