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Will it freeze in Newberg in the next 7 nights?
No overnight lows at or below 32°F are forecast in Newberg 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 · Chance Light Rain then Mostly Cloudy
- Sat, Nov 7 49°F Above 36°F · Light Rain
- Sun, Nov 8 41°F Above 36°F · Mostly Cloudy
- Mon, Nov 9 47°F Above 36°F · Light Rain Likely
- Tue, Nov 10 49°F Above 36°F · Chance Light Rain
- 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 Newberg
The median first fall hard-freeze date (28°F) is December 10, from NOAA’s 1991–2020 Climate Normals at Rex 1 S. 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 30 · Apr 21 · May 6 | Oct 20 · Nov 3 · Nov 22 | 198 days |
| 32°F freeze | Feb 23 · Mar 21 · Apr 19 | Nov 4 · Nov 22 · Dec 12 | 241 days |
| 28°F hard freeze | Jan 3 · Feb 15 · Mar 11 | Nov 15 · Dec 10 · Jan 12 | 301 days |
Average high temperature by month
1991–2020 normals at Rex 1 S
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 Newberg, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Rex 1 S (station USC00357127, elevation 515 ft), 2.3 mi from Newberg. 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 Newberg
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Sherwood, OR | 6.8 mi | Mar 21 | Nov 22 |
| Wilsonville, OR | 9.3 mi | Mar 18 | Nov 13 |
| King City, OR | 9.9 mi | Apr 1 | Nov 6 |
| Tualatin, OR | 9.9 mi | Apr 1 | Nov 6 |
| Tigard, OR | 12 mi | Apr 1 | Nov 6 |
| Woodburn, OR | 12 mi | Mar 16 | Nov 14 |
| McMinnville, OR | 13 mi | Apr 5 | Nov 7 |
| Canby, OR | 14 mi | Mar 18 | Nov 13 |
| Beaverton, OR | 14 mi | Apr 1 | Nov 6 |
| Lake Oswego, OR | 15 mi | Mar 18 | Nov 18 |
Frequently asked questions
When is the last frost in Newberg?
On average, the last spring frost (32°F) in Newberg is around March 21. In about 1 year in 10 it comes after April 19, and in 9 years in 10 it comes after February 23.
When is the first frost in Newberg?
The first fall frost (32°F) usually arrives around November 22. There’s a 10% chance of a freeze by November 4 and a 90% chance by December 12.
Can it frost in Newberg 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 Newberg?
Newberg 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 97132. See growing zones in Oregon.
More: all Oregon frost dates · Oregon growing zones · UV index today in Newberg · frost vs. freeze