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Will it freeze in Lansdale in the next 7 nights?
No overnight lows at or below 32°F are forecast in Lansdale 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.
2 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 Likely
- Fri, Nov 6 48°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 36°F Frost possible · 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 Lansdale
The median first fall hard-freeze date (28°F) is November 13, from NOAA’s 1991–2020 Climate Normals at Willow Grove NAS. 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 10 · Apr 24 · May 11 | Oct 6 · Oct 21 · Nov 4 | 179 days |
| 32°F freeze | Mar 29 · Apr 11 · Apr 27 | Oct 17 · Nov 1 · Nov 17 | 205 days |
| 28°F hard freeze | Mar 15 · Mar 30 · Apr 12 | Nov 1 · Nov 13 · Dec 1 | 229 days |
Average high temperature by month
1991–2020 normals at Willow Grove NAS
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 Lansdale, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Willow Grove NAS (station USW00014793, elevation 361 ft), 7.5 mi from Lansdale. 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 Lansdale
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Souderton, PA | 5.0 mi | Apr 26 | Oct 17 |
| Ambler, PA | 6.8 mi | Apr 11 | Nov 1 |
| Norristown, PA | 8.7 mi | Apr 8 | Oct 31 |
| Perkasie, PA | 8.7 mi | Apr 26 | Oct 17 |
| Doylestown, PA | 9.3 mi | Apr 13 | Oct 30 |
| Collegeville, PA | 9.9 mi | Apr 24 | Oct 15 |
| Bridgeport, PA | 9.9 mi | Apr 8 | Oct 31 |
| Hatboro, PA | 11 mi | Apr 11 | Nov 1 |
| Conshohocken, PA | 11 mi | Apr 8 | Oct 31 |
| Quakertown, PA | 14 mi | Apr 26 | Oct 17 |
Frequently asked questions
When is the last frost in Lansdale?
On average, the last spring frost (32°F) in Lansdale is around April 11. In about 1 year in 10 it comes after April 27, and in 9 years in 10 it comes after March 29.
When is the first frost in Lansdale?
The first fall frost (32°F) usually arrives around November 1. There’s a 10% chance of a freeze by October 17 and a 90% chance by November 17.
Can it frost in Lansdale 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 24.
What growing zone is Lansdale?
Lansdale 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 19446. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze