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Frost forecast
The overnight forecast is unavailable right now. Check back later; the historical frost dates below are not a forecast for tonight.
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 Easton
The median first fall hard-freeze date (28°F) is November 4, from NOAA’s 1991–2020 Climate Normals at Phillipsburg-Easton Brg. 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 17 · May 1 · May 17 | Oct 1 · Oct 13 · Oct 27 | 164 days |
| 32°F freeze | Apr 5 · Apr 18 · May 5 | Oct 11 · Oct 25 · Nov 5 | 188 days |
| 28°F hard freeze | Mar 23 · Apr 4 · Apr 18 | Oct 24 · Nov 4 · Nov 16 | 212 days |
Average high temperature by month
1991–2020 normals at Phillipsburg-Easton Brg
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 Easton, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Phillipsburg-Easton Brg (station USC00286979, elevation 232 ft), 1.2 mi from Easton. 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 Easton
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Wilson, PA | 1.2 mi | Apr 18 | Oct 25 |
| Phillipsburg, NJ | 1.9 mi | Apr 18 | Oct 25 |
| Nazareth, PA | 6.2 mi | Apr 18 | Oct 25 |
| Bethlehem, PA | 8.7 mi | Apr 20 | Oct 24 |
| Hellertown, PA | 9.3 mi | Apr 21 | Oct 22 |
| Bangor, PA | 12 mi | Apr 30 | Oct 18 |
| Catasauqua, PA | 13 mi | Apr 20 | Oct 24 |
| Washington, NJ | 13 mi | Apr 30 | Oct 18 |
| Northampton, PA | 14 mi | Apr 20 | Oct 24 |
| Allentown, PA | 15 mi | Apr 20 | Oct 24 |
Frequently asked questions
When is the last frost in Easton?
On average, the last spring frost (32°F) in Easton 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 5.
When is the first frost in Easton?
The first fall frost (32°F) usually arrives around October 25. There’s a 10% chance of a freeze by October 11 and a 90% chance by November 5.
Can it frost in Easton 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 Easton?
Easton 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 18042. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · UV index today in Easton · frost vs. freeze