Frost dates for Acadia National Park, ME
At Acadia National Park, the median last spring frost (32°F) is Apr 27 and the median first fall frost is Oct 22, for a typical growing season of 177 days. For a 90% chance that the last frost has passed, wait until May 8. Nearby ZIP codes are in USDA hardiness zones 5b to 6b.
- Apr 27Last spring frost (median)50% chance of 32°F after this date
- May 8Safer planting date10% chance of 32°F after this date
- Oct 22First fall frost (median)50% chance of 32°F by this date
- 177 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 | Apr 27 | May 8 | May 23 |
| 32°F | Apr 15 | Apr 27 | May 8 |
| 28°F | Apr 4 | Apr 15 | Apr 27 |
| 24°F | Mar 24 | Apr 4 | Apr 15 |
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 26 | Oct 8 | Oct 25 |
| 32°F | Oct 6 | Oct 22 | Nov 5 |
| 28°F | Oct 18 | Nov 2 | Nov 16 |
| 24°F | Oct 30 | Nov 14 | Nov 27 |
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 | 134 days | 151 days | 171 days |
| 32°F | 157 days | 177 days | 196 days |
| 28°F | 183 days | 201 days | 218 days |
| 24°F | 204 days | 222 days | 240 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 |
|---|---|---|---|
| 04609 | 6a | -10 to -5°F | 3 km |
| 04662 | 6a | -10 to -5°F | 8 km |
| 04660 | 6a | -10 to -5°F | 8 km |
| 04675 | 6a | -10 to -5°F | 8 km |
| 04679 | 6a | -10 to -5°F | 11 km |
| 04677 | 6a | -10 to -5°F | 13 km |
| 04646 | 6b | -5 to 0°F | 13 km |
| 04693 | 6a | -10 to -5°F | 13 km |
| 04625 | 6b | -5 to 0°F | 14 km |
| 04612 | 6a | -10 to -5°F | 16 km |
| 04607 | 6a | -10 to -5°F | 17 km |
| 04613 | 6a | -10 to -5°F | 18 km |
| 04653 | 6a | -10 to -5°F | 20 km |
| 04674 | 6a | -10 to -5°F | 20 km |
| 04669 | 6a | -10 to -5°F | 21 km |
| 04664 | 5b | -15 to -10°F | 21 km |
| 04624 | 6a | -10 to -5°F | 22 km |
| 04616 | 6a | -10 to -5°F | 24 km |
| 04680 | 6a | -10 to -5°F | 27 km |
| 04685 | 6b | -5 to 0°F | 28 km |
| 04635 | 6b | -5 to 0°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 USC00170100, at 44.3739, -68.2592, elevation 143 m (470 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 141.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- E Surry (21 km)
- Jonesboro (57 km)
- Belfast (58 km)
- Bangor Intl Airport (65 km)
- Orono (67 km)
- Old Town 2 W (71 km)
- W Rockport 1 NNW (73 km)
- Wesley (79 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.