Frost dates for Newport Rose, RI
At Newport Rose, the median last spring frost (32°F) is Apr 7 and the median first fall frost is Nov 13, for a typical growing season of 216 days. For a 90% chance that the last frost has passed, wait until Apr 21. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 7Last spring frost (median)50% chance of 32°F after this date
- Apr 21Safer planting date10% chance of 32°F after this date
- Nov 13First fall frost (median)50% chance of 32°F by this date
- 216 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 10 | Apr 23 | May 6 |
| 32°F | Mar 28 | Apr 7 | Apr 21 |
| 28°F | Mar 14 | Mar 28 | Apr 8 |
| 24°F | Mar 3 | Mar 17 | Mar 31 |
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 12 |
| 32°F | Oct 31 | Nov 13 | Nov 27 |
| 28°F | Nov 11 | Nov 25 | Dec 11 |
| 24°F | Nov 21 | Dec 6 | Dec 24 |
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 | 167 days | 189 days | 207 days |
| 32°F | 194 days | 216 days | 235 days |
| 28°F | 219 days | 242 days | 263 days |
| 24°F | 242 days | 264 days | 286 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 |
|---|---|---|---|
| 02841 | 7a | 0 to 5°F | 2 km |
| 02835 | 7a | 0 to 5°F | 3 km |
| 02840 | 7a | 0 to 5°F | 4 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 USC00375215, at 41.5000, -71.3500, elevation 5 m (15 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 89.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Newport State Airport (7 km)
- Kingston 1 NW (16 km)
- Kingston (16 km)
- Kingston 1 W (16 km)
- Tiverton (18 km)
- Coventry 2 (25 km)
- Providence T F Green Airport (26 km)
- Westerly State Airport (41 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.