Frost dates for Sanford 2 NNW, ME
At Sanford 2 NNW, the median last spring frost (32°F) is May 16 and the median first fall frost is Sep 30, for a typical growing season of 136 days. For a 90% chance that the last frost has passed, wait until May 29. Nearby ZIP codes are in USDA hardiness zone 5b.
- May 16Last spring frost (median)50% chance of 32°F after this date
- May 29Safer planting date10% chance of 32°F after this date
- Sep 30First fall frost (median)50% chance of 32°F by this date
- 136 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 | May 15 | May 26 | Jun 6 |
| 32°F | May 2 | May 16 | May 29 |
| 28°F | Apr 21 | May 2 | May 17 |
| 24°F | Apr 6 | Apr 20 | May 2 |
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 6 | Sep 20 | Oct 1 |
| 32°F | Sep 18 | Sep 30 | Oct 10 |
| 28°F | Sep 28 | Oct 7 | Oct 24 |
| 24°F | Oct 5 | Oct 20 | Nov 5 |
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 | 97 days | 114 days | 130 days |
| 32°F | 118 days | 136 days | 153 days |
| 28°F | 139 days | 157 days | 177 days |
| 24°F | 162 days | 183 days | 204 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 |
|---|---|---|---|
| 04083 | 5b | -15 to -10°F | 3 km |
| 04073 | 5b | -15 to -10°F | 6 km |
| 04002 | 5b | -15 to -10°F | 10 km |
| 04076 | 5b | -15 to -10°F | 12 km |
| 03906 | 5b | -15 to -10°F | 12 km |
| 04027 | 5b | -15 to -10°F | 12 km |
| 04001 | 5b | -15 to -10°F | 16 km |
| 03852 | 5b | -15 to -10°F | 17 km |
| 03887 | 5b | -15 to -10°F | 24 km |
| 03830 | 5b | -15 to -10°F | 24 km |
| 03872 | 5b | -15 to -10°F | 25 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 USC00177479, at 43.4575, -70.7803, elevation 88 m (289 ft).
- Data quality: Standard (24+ years of data), 24 years of freeze data.
- Average days per year at or below 32°F: 156.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hollis (23 km)
- Kennebunkport (27 km)
- Cape Neddick (28 km)
- West Buxton 2 NNW (29 km)
- Portland Intl Jetport (44 km)
- East Hiram (47 km)
- Windham 2nw (51 km)
- Fryeburg E Slopes Airport (61 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.