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Will it freeze in Scappoose in the next 7 nights?
No overnight lows at or below 32°F are forecast in Scappoose during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 41°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 41°F Above 36°F · Mostly Cloudy
- Fri, Nov 6 47°F Above 36°F · Light Rain Likely
- Sat, Nov 7 47°F Above 36°F · Light Rain
- Sun, Nov 8 40°F Above 36°F · Mostly Cloudy
- Mon, Nov 9 45°F Above 36°F · Light Rain Likely
- Tue, Nov 10 48°F Above 36°F · Light Rain Likely
- Wed, Nov 11 46°F Above 36°F · Chance Light Rain
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 Scappoose
The median first fall hard-freeze date (28°F) is November 19, from NOAA’s 1991–2020 Climate Normals at Scappoose Ind 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 15 · Apr 30 · May 17 | Oct 1 · Oct 16 · Nov 3 | 169 days |
| 32°F freeze | Mar 17 · Apr 10 · May 1 | Oct 16 · Nov 2 · Nov 23 | 209 days |
| 28°F hard freeze | Feb 2 · Mar 3 · Mar 28 | Oct 31 · Nov 19 · Dec 15 | 259 days |
Average high temperature by month
1991–2020 normals at Scappoose Ind 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 Scappoose, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Scappoose Ind Airport (station USW00004201, elevation 55 ft), 1.2 mi from Scappoose. 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 Scappoose
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| St. Helens, OR | 7.5 mi | Apr 18 | Nov 7 |
| Ridgefield, WA | 11 mi | Apr 26 | Oct 16 |
| Woodland, WA | 12 mi | Apr 18 | Nov 7 |
| Vancouver, WA | 16 mi | Mar 29 | Nov 9 |
| Battle Ground, WA | 16 mi | Apr 26 | Oct 16 |
| Hillsboro, OR | 16 mi | Apr 16 | Oct 23 |
| Cornelius, OR | 19 mi | Apr 16 | Oct 26 |
| Portland, OR | 19 mi | Feb 25 | Dec 1 |
| Beaverton, OR | 19 mi | Apr 1 | Nov 6 |
| Forest Grove, OR | 20 mi | Apr 16 | Oct 26 |
Frequently asked questions
When is the last frost in Scappoose?
On average, the last spring frost (32°F) in Scappoose is around April 10. In about 1 year in 10 it comes after May 1, and in 9 years in 10 it comes after March 17.
When is the first frost in Scappoose?
The first fall frost (32°F) usually arrives around November 2. There’s a 10% chance of a freeze by October 16 and a 90% chance by November 23.
Can it frost in Scappoose 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 Scappoose?
Scappoose is in USDA Plant Hardiness Zone 8b (average annual extreme minimum temperature 15 to 20°F), based on the 2023 USDA map for ZIP code 97053. See growing zones in Oregon.
More: all Oregon frost dates · Oregon growing zones · frost vs. freeze