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Will it freeze in Birdsboro in the next 7 nights?
No overnight lows at or below 32°F are forecast in Birdsboro during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 60°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 60°F Above 36°F · Light Rain
- Fri, Nov 6 47°F Above 36°F · Partly Cloudy
- Sat, Nov 7 41°F Above 36°F · Partly Cloudy
- Sun, Nov 8 37°F Above 36°F · Mostly Clear
- Mon, Nov 9 37°F Above 36°F · Mostly Clear
- Tue, Nov 10 38°F Above 36°F · Mostly Clear
- Wed, Nov 11 33°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 Birdsboro
The median first fall hard-freeze date (28°F) is November 6, from NOAA’s 1991–2020 Climate Normals at Hopewell Morgantown. 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 · Apr 30 · May 14 | Oct 1 · Oct 15 · Nov 1 | 169 days |
| 32°F freeze | Apr 3 · Apr 16 · Apr 30 | Oct 11 · Oct 27 · Nov 10 | 193 days |
| 28°F hard freeze | Mar 20 · Apr 3 · Apr 17 | Oct 25 · Nov 6 · Nov 19 | 216 days |
Average high temperature by month
1991–2020 normals at Hopewell Morgantown
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 Birdsboro, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Hopewell Morgantown (station USC00364076, elevation 550 ft), 8.1 mi from Birdsboro. 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 Birdsboro
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Reading, PA | 8.1 mi | Apr 14 | Oct 29 |
| Shillington, PA | 8.7 mi | Apr 14 | Oct 29 |
| Pottstown, PA | 8.7 mi | Apr 20 | Oct 23 |
| Wyomissing, PA | 9.3 mi | Apr 14 | Oct 29 |
| Phoenixville, PA | 17 mi | Apr 18 | Oct 27 |
| Downingtown, PA | 19 mi | Apr 26 | Oct 18 |
| New Holland, PA | 19 mi | Apr 14 | Nov 1 |
| Coatesville, PA | 19 mi | Apr 19 | Oct 25 |
| Collegeville, PA | 19 mi | Apr 24 | Oct 15 |
| Ephrata, PA | 21 mi | Apr 18 | Oct 25 |
Frequently asked questions
When is the last frost in Birdsboro?
On average, the last spring frost (32°F) in Birdsboro is around April 16. In about 1 year in 10 it comes after April 30, and in 9 years in 10 it comes after April 3.
When is the first frost in Birdsboro?
The first fall frost (32°F) usually arrives around October 27. There’s a 10% chance of a freeze by October 11 and a 90% chance by November 10.
Can it frost in Birdsboro 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 April 30.
What growing zone is Birdsboro?
Birdsboro 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 19508. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze