Frost dates for Old Town 2 W, ME
At Old Town 2 W, the median last spring frost (32°F) is May 13 and the median first fall frost is Sep 28, for a typical growing season of 137 days. For a 90% chance that the last frost has passed, wait until May 28. Nearby ZIP codes are in USDA hardiness zone 5a.
- May 13Last spring frost (median)50% chance of 32°F after this date
- May 28Safer planting date10% chance of 32°F after this date
- Sep 28First fall frost (median)50% chance of 32°F by this date
- 137 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 14 | May 28 | Jun 9 |
| 32°F | Apr 30 | May 13 | May 28 |
| 28°F | Apr 19 | Apr 30 | May 13 |
| 24°F | Apr 4 | Apr 18 | Apr 29 |
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 5 | Sep 18 | Oct 1 |
| 32°F | Sep 16 | Sep 28 | Oct 11 |
| 28°F | Sep 27 | Oct 11 | Oct 28 |
| 24°F | Oct 9 | Oct 27 | 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 | 96 days | 113 days | 130 days |
| 32°F | 117 days | 137 days | 155 days |
| 28°F | 142 days | 161 days | 183 days |
| 24°F | 168 days | 191 days | 210 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 |
|---|---|---|---|
| 04468 | 5a | -20 to -15°F | 11 km |
| 04461 | 5a | -20 to -15°F | 12 km |
| 04449 | 5a | -20 to -15°F | 16 km |
| 04410 | 5a | -20 to -15°F | 24 km |
| 04418 | 5a | -20 to -15°F | 26 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 USW00094644, at 44.9281, -68.7006, elevation 39 m (127 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 173.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Orono (4 km)
- Bangor Intl Airport (17 km)
- Corinna (43 km)
- Dover-Foxcroft Wastewater Plant (48 km)
- E Sangerville (51 km)
- Lincoln Sanitary District/wtp (52 km)
- E Surry (52 km)
- Barnard (53 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.