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Will it freeze in Bridgeport in the next 7 nights?
No overnight lows at or below 32°F are forecast in Bridgeport during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 61°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 61°F Above 36°F · Light Rain Likely
- Fri, Nov 6 49°F Above 36°F · Partly Cloudy
- Sat, Nov 7 41°F Above 36°F · Partly Cloudy
- Sun, Nov 8 39°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 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 Bridgeport
The median first fall hard-freeze date (28°F) is November 10, from NOAA’s 1991–2020 Climate Normals at Norristown. 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 6 · Apr 22 · May 9 | Oct 6 · Oct 20 · Nov 3 | 180 days |
| 32°F freeze | Mar 28 · Apr 8 · Apr 23 | Oct 14 · Oct 31 · Nov 12 | 203 days |
| 28°F hard freeze | Mar 15 · Mar 31 · Apr 12 | Oct 27 · Nov 10 · Nov 22 | 224 days |
Average high temperature by month
1991–2020 normals at Norristown
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 Bridgeport, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Norristown (station USC00366370, elevation 62 ft), 0.5 mi from Bridgeport. 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 Bridgeport
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Norristown, PA | 1.2 mi | Apr 8 | Oct 31 |
| Conshohocken, PA | 2.5 mi | Apr 8 | Oct 31 |
| Ambler, PA | 7.5 mi | Apr 11 | Nov 1 |
| Collegeville, PA | 8.1 mi | Apr 24 | Oct 15 |
| Phoenixville, PA | 9.9 mi | Apr 18 | Oct 27 |
| Lansdale, PA | 9.9 mi | Apr 11 | Nov 1 |
| Lansdowne, PA | 12 mi | Apr 2 | Nov 10 |
| Clifton Heights, PA | 12 mi | Apr 2 | Nov 10 |
| Yeadon, PA | 13 mi | Apr 2 | Nov 10 |
| Philadelphia, PA | 13 mi | Mar 30 | Nov 17 |
Frequently asked questions
When is the last frost in Bridgeport?
On average, the last spring frost (32°F) in Bridgeport is around April 8. In about 1 year in 10 it comes after April 23, and in 9 years in 10 it comes after March 28.
When is the first frost in Bridgeport?
The first fall frost (32°F) usually arrives around October 31. There’s a 10% chance of a freeze by October 14 and a 90% chance by November 12.
Can it frost in Bridgeport 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 22.
What growing zone is Bridgeport?
Bridgeport is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 19405. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze