Frost dates for E Surry, ME
At E Surry, the median last spring frost (32°F) is May 8 and the median first fall frost is Oct 9, for a typical growing season of 152 days. For a 90% chance that the last frost has passed, wait until May 23. Nearby ZIP codes are in USDA hardiness zones 5b to 6a.
- May 8Last spring frost (median)50% chance of 32°F after this date
- May 23Safer planting date10% chance of 32°F after this date
- Oct 9First fall frost (median)50% chance of 32°F by this date
- 152 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 8 | May 21 | Jun 3 |
| 32°F | Apr 27 | May 8 | May 23 |
| 28°F | Apr 12 | Apr 27 | May 10 |
| 24°F | Mar 31 | Apr 11 | Apr 24 |
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 15 | Sep 28 | Oct 10 |
| 32°F | Sep 27 | Oct 9 | Oct 24 |
| 28°F | Oct 6 | Oct 21 | Nov 6 |
| 24°F | Oct 21 | Nov 4 | Nov 18 |
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 | 111 days | 128 days | 146 days |
| 32°F | 132 days | 152 days | 171 days |
| 28°F | 157 days | 178 days | 199 days |
| 24°F | 185 days | 206 days | 223 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 |
|---|---|---|---|
| 04684 | 5b | -15 to -10°F | 5 km |
| 04614 | 5b | -15 to -10°F | 11 km |
| 04640 | 5b | -15 to -10°F | 14 km |
| 04431 | 5b | -15 to -10°F | 18 km |
| 04472 | 5b | -15 to -10°F | 19 km |
| 04476 | 5b | -15 to -10°F | 20 km |
| 04676 | 5b | -15 to -10°F | 21 km |
| 04605 | 5b | -15 to -10°F | 22 km |
| 04634 | 5b | -15 to -10°F | 24 km |
| 04673 | 6a | -10 to -5°F | 27 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 USC00172443, at 44.4933, -68.4583, elevation 32 m (105 ft).
- Data quality: Estimated from nearby stations (2+ years), 8 years of freeze data.
- Average days per year at or below 32°F: 162.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Acadia National Park (21 km)
- Belfast (44 km)
- Bangor Intl Airport (44 km)
- Orono (48 km)
- Old Town 2 W (52 km)
- W Rockport 1 NNW (64 km)
- Jonesboro (66 km)
- Corinna (78 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.