Frost dates for New Sharon, ME
At New Sharon, the median last spring frost (32°F) is May 7 and the median first fall frost is Oct 2, for a typical growing season of 146 days. For a 90% chance that the last frost has passed, wait until May 22. Nearby ZIP codes are in USDA hardiness zone 5a.
- May 7Last spring frost (median)50% chance of 32°F after this date
- May 22Safer planting date10% chance of 32°F after this date
- Oct 2First fall frost (median)50% chance of 32°F by this date
- 146 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 7 | May 20 | Jun 3 |
| 32°F | Apr 28 | May 7 | May 22 |
| 28°F | Apr 13 | Apr 26 | May 5 |
| 24°F | Apr 3 | Apr 13 | Apr 25 |
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 9 | Sep 22 | Oct 4 |
| 32°F | Sep 20 | Oct 2 | Oct 17 |
| 28°F | Oct 1 | Oct 15 | Oct 31 |
| 24°F | Oct 13 | Oct 30 | Nov 10 |
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 | 105 days | 123 days | 141 days |
| 32°F | 127 days | 146 days | 163 days |
| 28°F | 152 days | 172 days | 189 days |
| 24°F | 180 days | 198 days | 213 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 |
|---|---|---|---|
| 04955 | 5a | -20 to -15°F | 1 km |
| 04940 | 5a | -20 to -15°F | 7 km |
| 04360 | 5a | -20 to -15°F | 9 km |
| 04963 | 5a | -20 to -15°F | 10 km |
| 04918 | 5a | -20 to -15°F | 14 km |
| 04978 | 5a | -20 to -15°F | 16 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 USC00175736, at 44.6353, -70.0003, elevation 146 m (480 ft).
- Data quality: Representative (10+ years), 10 years of freeze data.
- Average days per year at or below 32°F: 176.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Farmington (14 km)
- Madison (20 km)
- Livermore Falls 1 E (22 km)
- Waterville Trtmt Plant (30 km)
- Hartford (38 km)
- Augusta State Airport (39 km)
- Rumford 1 SSE (44 km)
- Turner (44 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.