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Will it freeze in Roseburg in the next 7 nights?
No overnight lows at or below 32°F are forecast in Roseburg 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 · Partly Cloudy
- Fri, Nov 6 41°F Above 36°F · Partly Cloudy
- Sat, Nov 7 47°F Above 36°F · Light Rain
- Sun, Nov 8 43°F Above 36°F · Mostly Cloudy
- Mon, Nov 9 46°F Above 36°F · Slight Chance Light Rain
- Tue, Nov 10 46°F Above 36°F · Slight Chance Light Rain
- Wed, Nov 11 45°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 Roseburg
The median first fall hard-freeze date (28°F) is December 11, from NOAA’s 1991–2020 Climate Normals at Roseburg Kqen. 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 | Mar 31 · Apr 21 · May 9 | Oct 8 · Oct 25 · Nov 17 | 188 days |
| 32°F freeze | Feb 25 · Mar 23 · Apr 16 | Oct 24 · Nov 18 · Dec 17 | 237 days |
| 28°F hard freeze | Dec 31 · Feb 20 · Mar 21 | Nov 8 · Dec 11 · Jan 31 | 299 days |
Average high temperature by month
1991–2020 normals at Roseburg Kqen
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 Roseburg, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Roseburg Kqen (station USC00357331, elevation 425 ft), 1.0 mi from Roseburg. 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 Roseburg
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Winston, OR | 8.1 mi | Mar 23 | Nov 18 |
| Sutherlin, OR | 11 mi | Mar 31 | Nov 5 |
| Cottage Grove, OR | 42 mi | Apr 24 | Oct 25 |
| Coos Bay, OR | 45 mi | Feb 21 | Dec 9 |
| North Bend, OR | 46 mi | Feb 21 | Dec 9 |
| Creswell, OR | 51 mi | Apr 24 | Oct 25 |
| Grants Pass, OR | 55 mi | Apr 8 | Oct 28 |
| Veneta, OR | 57 mi | Apr 18 | Oct 25 |
| Eugene, OR | 59 mi | Apr 11 | Oct 23 |
| Eagle Point, OR | 59 mi | Apr 8 | Oct 29 |
Frequently asked questions
When is the last frost in Roseburg?
On average, the last spring frost (32°F) in Roseburg is around March 23. In about 1 year in 10 it comes after April 16, and in 9 years in 10 it comes after February 25.
When is the first frost in Roseburg?
The first fall frost (32°F) usually arrives around November 18. There’s a 10% chance of a freeze by October 24 and a 90% chance by December 17.
Can it frost in Roseburg 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 21.
What growing zone is Roseburg?
Roseburg 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 97495. See growing zones in Oregon.
More: all Oregon frost dates · Oregon growing zones · frost vs. freeze