Frost dates for Hingham, MA
At Hingham, the median last spring frost (32°F) is Apr 25 and the median first fall frost is Oct 22, for a typical growing season of 177 days. For a 90% chance that the last frost has passed, wait until May 8. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 25Last spring frost (median)50% chance of 32°F after this date
- May 8Safer planting date10% chance of 32°F after this date
- Oct 22First fall frost (median)50% chance of 32°F by this date
- 177 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 6 | May 20 |
| 32°F | Apr 13 | Apr 25 | May 8 |
| 28°F | Mar 29 | Apr 10 | Apr 24 |
| 24°F | Mar 14 | Mar 30 | Apr 10 |
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 28 | Oct 9 | Oct 24 |
| 32°F | Oct 6 | Oct 22 | Nov 5 |
| 28°F | Oct 19 | Nov 2 | Nov 16 |
| 24°F | Nov 2 | Nov 15 | Dec 1 |
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 | 136 days | 154 days | 172 days |
| 32°F | 158 days | 177 days | 197 days |
| 28°F | 185 days | 205 days | 224 days |
| 24°F | 212 days | 232 days | 254 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 |
|---|---|---|---|
| 02189 | 7a | 0 to 5°F | 2 km |
| 02043 | 7a | 0 to 5°F | 3 km |
| 02191 | 7a | 0 to 5°F | 3 km |
| 02188 | 6b | -5 to 0°F | 4 km |
| 02045 | 7a | 0 to 5°F | 7 km |
| 02190 | 6b | -5 to 0°F | 7 km |
| 02184 | 6b | -5 to 0°F | 8 km |
| 02025 | 7a | 0 to 5°F | 8 km |
| 02169 | 6b | -5 to 0°F | 9 km |
| 02170 | 7a | 0 to 5°F | 10 km |
| 02061 | 7a | 0 to 5°F | 10 km |
| 02370 | 6b | -5 to 0°F | 11 km |
| 02339 | 6b | -5 to 0°F | 12 km |
| 02066 | 7a | 0 to 5°F | 13 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 USC00193624, at 42.2269, -70.9125, elevation 11 m (35 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 115.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Blue Hill COOP (17 km)
- Blue Hill (17 km)
- Boston Logan Intl Airport (17 km)
- Jamaica Plain (19 km)
- Brockton (21 km)
- Norwood Mem Airport (22 km)
- Walpole 2 (28 km)
- Bridgewater (31 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.