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Will it freeze in Ephrata in the next 7 nights?
No overnight lows at or below 32°F are forecast in Ephrata during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 59°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
1 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 59°F Above 36°F · Light Rain Likely
- Fri, Nov 6 46°F Above 36°F · Partly Cloudy
- Sat, Nov 7 41°F Above 36°F · Partly Cloudy
- Sun, Nov 8 38°F Above 36°F · Mostly Clear
- Mon, Nov 9 37°F Above 36°F · Mostly Clear
- Tue, Nov 10 37°F Above 36°F · Mostly Clear
- Wed, Nov 11 34°F Frost possible · 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 Ephrata
The median first fall hard-freeze date (28°F) is November 5, from NOAA’s 1991–2020 Climate Normals at Lancaster Airport. 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 | Apr 18 · May 1 · May 16 | Oct 2 · Oct 14 · Oct 27 | 165 days |
| 32°F freeze | Apr 4 · Apr 18 · May 5 | Oct 10 · Oct 25 · Nov 6 | 186 days |
| 28°F hard freeze | Mar 21 · Apr 4 · Apr 18 | Oct 23 · Nov 5 · Nov 20 | 214 days |
Average high temperature by month
1991–2020 normals at Lancaster Airport
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 Ephrata, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Lancaster Airport (station USW00054737, elevation 403 ft), 7.3 mi from Ephrata. 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 Ephrata
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Lititz, PA | 6.8 mi | Apr 18 | Oct 25 |
| New Holland, PA | 7.5 mi | Apr 14 | Nov 1 |
| Lancaster, PA | 12 mi | Apr 19 | Oct 24 |
| Shillington, PA | 14 mi | Apr 14 | Oct 29 |
| Millersville, PA | 15 mi | Apr 19 | Oct 24 |
| Wyomissing, PA | 16 mi | Apr 14 | Oct 29 |
| Lebanon, PA | 17 mi | Apr 20 | Oct 25 |
| Reading, PA | 17 mi | Apr 14 | Oct 29 |
| Mount Joy, PA | 18 mi | Apr 30 | Oct 10 |
| Columbia, PA | 19 mi | Apr 30 | Oct 10 |
Frequently asked questions
When is the last frost in Ephrata?
On average, the last spring frost (32°F) in Ephrata is around April 18. In about 1 year in 10 it comes after May 5, and in 9 years in 10 it comes after April 4.
When is the first frost in Ephrata?
The first fall frost (32°F) usually arrives around October 25. There’s a 10% chance of a freeze by October 10 and a 90% chance by November 6.
Can it frost in Ephrata 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 1.
What growing zone is Ephrata?
Ephrata is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 17522. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze