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Will it freeze in Ellsworth in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Mon, Nov 9: 32°F (Mon, Nov 9, 6:00 PM EST to Tue, Nov 10, 6:00 AM EST).
Tonight: forecast low 56°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
4 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 56°F Above 36°F · Slight Chance Light Rain then Areas Of Fog
- Fri, Nov 6 49°F Above 36°F · Light Rain
- Sat, Nov 7 42°F Above 36°F · Light Rain Likely
- Sun, Nov 8 35°F Frost possible · Chance Light Rain
- Mon, Nov 9 32°F Freeze · Partly Cloudy
- Tue, Nov 10 34°F Frost possible · Partly Cloudy
- Wed, Nov 11 28°F Hard freeze · Partly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Ellsworth
The median first fall hard-freeze date (28°F) is October 21, from NOAA’s 1991–2020 Climate Normals at E Surry. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | May 8 · May 21 · Jun 3 | Sep 15 · Sep 28 · Oct 10 | 128 days |
| 32°F freeze | Apr 27 · May 8 · May 23 | Sep 27 · Oct 9 · Oct 24 | 152 days |
| 28°F hard freeze | Apr 12 · Apr 27 · May 10 | Oct 6 · Oct 21 · Nov 6 | 178 days |
Average high temperature by month
1991–2020 normals at E Surry
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Ellsworth, ME come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: E Surry (station USC00172443, elevation 105 ft), 6.3 mi from Ellsworth. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Ellsworth
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Brewer, ME | 19 mi | May 4 | Oct 4 |
| Bangor, ME | 23 mi | May 4 | Oct 4 |
| Old Town, ME | 29 mi | May 13 | Sep 28 |
| Belfast, ME | 29 mi | May 7 | Oct 5 |
| Rockland, ME | 45 mi | Apr 27 | Oct 19 |
| Waterville, ME | 58 mi | May 2 | Oct 10 |
| Augusta, ME | 64 mi | Apr 27 | Oct 16 |
| Gardiner, ME | 70 mi | May 1 | Oct 11 |
| Bath, ME | 81 mi | May 10 | Oct 6 |
| Lewiston, ME | 90 mi | Apr 25 | Oct 19 |
Frequently asked questions
When is the last frost in Ellsworth?
On average, the last spring frost (32°F) in Ellsworth is around May 8. In about 1 year in 10 it comes after May 23, and in 9 years in 10 it comes after April 27.
When is the first frost in Ellsworth?
The first fall frost (32°F) usually arrives around October 9. There’s a 10% chance of a freeze by September 27 and a 90% chance by October 24.
Can it frost in Ellsworth after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 21.
What growing zone is Ellsworth?
Ellsworth is in USDA Plant Hardiness Zone 5b (average annual extreme minimum temperature −15 to −10°F), based on the 2023 USDA map for ZIP code 04684. See growing zones in Maine.
More: all Maine frost dates · Maine growing zones · frost vs. freeze