Frost dates for N Foster 1 E, RI
At N Foster 1 E, the median last spring frost (32°F) is Apr 25 and the median first fall frost is Oct 19, for a typical growing season of 176 days. For a 90% chance that the last frost has passed, wait until May 9. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 25Last spring frost (median)50% chance of 32°F after this date
- May 9Safer planting date10% chance of 32°F after this date
- Oct 19First fall frost (median)50% chance of 32°F by this date
- 176 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 26 | May 7 | May 21 |
| 32°F | Apr 13 | Apr 25 | May 9 |
| 28°F | Apr 1 | Apr 12 | Apr 26 |
| 24°F | Mar 17 | Apr 1 | Apr 12 |
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 | Sep 26 | Oct 7 | Oct 21 |
| 32°F | Oct 4 | Oct 19 | Nov 2 |
| 28°F | Oct 15 | Oct 30 | Nov 13 |
| 24°F | Oct 28 | Nov 11 | Nov 27 |
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 | 134 days | 152 days | 170 days |
| 32°F | 156 days | 176 days | 195 days |
| 28°F | 182 days | 201 days | 217 days |
| 24°F | 206 days | 223 days | 244 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 |
|---|---|---|---|
| 02814 | 6b | -5 to 0°F | 5 km |
| 06243 | 6b | -5 to 0°F | 6 km |
| 02825 | 6b | -5 to 0°F | 8 km |
| 02857 | 6b | -5 to 0°F | 9 km |
| 06241 | 6b | -5 to 0°F | 9 km |
| 02815 | 6b | -5 to 0°F | 10 km |
| 02859 | 6b | -5 to 0°F | 12 km |
| 06239 | 6b | -5 to 0°F | 12 km |
| 02839 | 6b | -5 to 0°F | 12 km |
| 02829 | 6b | -5 to 0°F | 13 km |
| 06377 | 6b | -5 to 0°F | 16 km |
| 06373 | 6b | -5 to 0°F | 20 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 USC00375270, at 41.8564, -71.7333, elevation 192 m (630 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 132.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Woonsocket (25 km)
- Coventry 2 (26 km)
- Providence T F Green Airport (29 km)
- Kingston 1 NW (44 km)
- Kingston (44 km)
- Kingston 1 W (45 km)
- Tiverton (50 km)
- Newport Rose (51 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.