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Will it freeze in Corvallis in the next 7 nights?
No overnight lows at or below 32°F are forecast in Corvallis during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 39°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 39°F Above 36°F · Mostly Cloudy then Patchy Fog
- Fri, Nov 6 44°F Above 36°F · Chance Light Rain then Mostly Cloudy
- 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 · Chance Light Rain
- Tue, Nov 10 47°F Above 36°F · Chance Light Rain
- Wed, Nov 11 44°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 Corvallis
The median first fall hard-freeze date (28°F) is November 17, from NOAA’s 1991–2020 Climate Normals at Corvallis State University. 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 25 · May 11 · Jun 2 | Sep 23 · Oct 10 · Oct 28 | 151 days |
| 32°F freeze | Mar 22 · Apr 17 · May 8 | Oct 5 · Oct 28 · Nov 19 | 194 days |
| 28°F hard freeze | Jan 25 · Mar 1 · Apr 5 | Oct 22 · Nov 17 · Dec 18 | 259 days |
Average high temperature by month
1991–2020 normals at Corvallis State University
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 Corvallis, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Corvallis State University (station USC00351862, elevation 225 ft), 6.2 mi from Corvallis. 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 Corvallis
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Philomath, OR | 4.3 mi | May 15 | Oct 8 |
| Albany, OR | 9.9 mi | Apr 17 | Oct 28 |
| Lebanon, OR | 19 mi | Mar 14 | Nov 18 |
| Monmouth, OR | 20 mi | Apr 16 | Nov 1 |
| Independence, OR | 21 mi | Apr 16 | Nov 1 |
| Dallas, OR | 24 mi | Apr 16 | Nov 1 |
| Junction City, OR | 25 mi | Apr 11 | Oct 23 |
| Salem, OR | 27 mi | Apr 3 | Nov 1 |
| Stayton, OR | 29 mi | Mar 29 | Nov 6 |
| Sweet Home, OR | 30 mi | Apr 12 | Oct 28 |
Frequently asked questions
When is the last frost in Corvallis?
On average, the last spring frost (32°F) in Corvallis is around April 17. In about 1 year in 10 it comes after May 8, and in 9 years in 10 it comes after March 22.
When is the first frost in Corvallis?
The first fall frost (32°F) usually arrives around October 28. There’s a 10% chance of a freeze by October 5 and a 90% chance by November 19.
Can it frost in Corvallis 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 11.
What growing zone is Corvallis?
Corvallis 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 97331. See growing zones in Oregon.
More: all Oregon frost dates · Oregon growing zones · UV index today in Corvallis · frost vs. freeze