Frost dates for Lincoln Sanitary District/wtp, ME
At Lincoln Sanitary District/wtp, the median last spring frost (32°F) is May 4 and the median first fall frost is Oct 6, for a typical growing season of 153 days. For a 90% chance that the last frost has passed, wait until May 16. Nearby ZIP codes are in USDA hardiness zone 5a.
- May 4Last spring frost (median)50% chance of 32°F after this date
- May 16Safer planting date10% chance of 32°F after this date
- Oct 6First fall frost (median)50% chance of 32°F by this date
- 153 daysGrowing season (median)between 32°F freezes
USDA hardiness zone 5a (-20 to -15°F) · see all zone 5a frost dates
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 5 | May 17 | Jun 1 |
| 32°F | Apr 25 | May 4 | May 16 |
| 28°F | Apr 13 | Apr 24 | May 4 |
| 24°F | Apr 4 | Apr 14 | 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 14 | Sep 26 | Oct 7 |
| 32°F | Sep 24 | Oct 6 | Oct 20 |
| 28°F | Oct 2 | Oct 18 | Nov 2 |
| 24°F | Oct 17 | Nov 1 | Nov 14 |
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 | 114 days | 131 days | 147 days |
| 32°F | 137 days | 153 days | 170 days |
| 28°F | 157 days | 176 days | 195 days |
| 24°F | 180 days | 200 days | 216 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 |
|---|---|---|---|
| 04457 | 5a | -20 to -15°F | 8 km |
| 04493 | 5a | -20 to -15°F | 11 km |
| 04495 | 5a | -20 to -15°F | 17 km |
| 04448 | 5a | -20 to -15°F | 19 km |
| 04417 | 5a | -20 to -15°F | 20 km |
| 04455 | 5a | -20 to -15°F | 21 km |
| 04475 | 5a | -20 to -15°F | 21 km |
| 04453 | 5a | -20 to -15°F | 30 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 USC00174683, at 45.3753, -68.5083, elevation 58 m (190 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 167.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Millinocket Wastewater (32 km)
- Millinocket Muni Airport (34 km)
- Millinocket (34 km)
- Barnard (51 km)
- Old Town 2 W (52 km)
- Orono (55 km)
- Dover-Foxcroft Wastewater Plant (57 km)
- Sebec Lake (58 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.