Frost dates for Danforth, ME
At Danforth, the median last spring frost (32°F) is May 25 and the median first fall frost is Sep 24, for a typical growing season of 119 days. For a 90% chance that the last frost has passed, wait until Jun 8. Nearby ZIP codes are in USDA hardiness zones 4b to 5a.
- May 25Last spring frost (median)50% chance of 32°F after this date
- Jun 8Safer planting date10% chance of 32°F after this date
- Sep 24First fall frost (median)50% chance of 32°F by this date
- 119 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 24 | Jun 5 | Jun 20 |
| 32°F | May 10 | May 25 | Jun 8 |
| 28°F | Apr 27 | May 11 | May 27 |
| 24°F | Apr 12 | Apr 27 | May 12 |
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 | Aug 29 | Sep 11 | Sep 26 |
| 32°F | Sep 8 | Sep 24 | Oct 5 |
| 28°F | Sep 22 | Oct 3 | Oct 18 |
| 24°F | Oct 2 | Oct 14 | Nov 1 |
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 | 75 days | 96 days | 117 days |
| 32°F | 98 days | 119 days | 138 days |
| 28°F | 123 days | 143 days | 162 days |
| 24°F | 149 days | 168 days | 189 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 |
|---|---|---|---|
| 04424 | 4b | -25 to -20°F | 1 km |
| 04413 | 5a | -20 to -15°F | 11 km |
| 04497 | 4b | -25 to -20°F | 17 km |
| 04451 | 5a | -20 to -15°F | 29 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 USC00171833, at 45.6611, -67.8614, elevation 145 m (475 ft).
- Data quality: Representative (10+ years), 13 years of freeze data.
- Average days per year at or below 32°F: 198.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Topsfield 2 (27 km)
- Vanceboro No. 2 (35 km)
- Houlton Intl Airport (52 km)
- Grand Lake Stream (54 km)
- Lincoln Sanitary District/wtp (60 km)
- Houlton 5n (61 km)
- Millinocket Wastewater (63 km)
- Patten 2 (64 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.