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Will it freeze in Warrenton in the next 7 nights?
No overnight lows at or below 32°F are forecast in Warrenton during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 44°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 44°F Above 36°F · Mostly Cloudy then Chance Light Rain
- Fri, Nov 6 50°F Above 36°F · Light Rain
- Sat, Nov 7 49°F Above 36°F · Light Rain
- Sun, Nov 8 40°F Above 36°F · Partly Cloudy
- Mon, Nov 9 48°F Above 36°F · Light Rain Likely then Showers And Thunderstorms
- Tue, Nov 10 49°F Above 36°F · Light Rain Likely
- Wed, Nov 11 47°F Above 36°F · Light Rain Likely
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 Warrenton
The median first fall hard-freeze date (28°F) is December 5, from NOAA’s 1991–2020 Climate Normals at Astoria Regional 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 3 · Apr 25 · May 10 | Oct 5 · Oct 23 · Nov 11 | 181 days |
| 32°F freeze | Feb 27 · Mar 26 · Apr 18 | Oct 22 · Nov 11 · Dec 8 | 232 days |
| 28°F hard freeze | Dec 31 · Feb 18 · Mar 17 | Nov 9 · Dec 5 · Jan 30 | 299 days |
Average high temperature by month
1991–2020 normals at Astoria Regional 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 Warrenton, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Astoria Regional Airport (station USW00094224, elevation 9 ft), 2.5 mi from Warrenton. 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 Warrenton
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Astoria, OR | 5.6 mi | Mar 26 | Nov 11 |
| Seaside, OR | 12 mi | Apr 2 | Nov 12 |
| Longview, WA | 46 mi | Apr 8 | Nov 5 |
| Tillamook, OR | 50 mi | Apr 22 | Oct 21 |
| Kelso, WA | 50 mi | Apr 8 | Nov 5 |
| Hoquiam, WA | 55 mi | Mar 30 | Nov 14 |
| Aberdeen, WA | 56 mi | Mar 29 | Nov 15 |
| Ocean Shores, WA | 56 mi | Mar 30 | Nov 14 |
| Chehalis, WA | 57 mi | Apr 22 | Oct 27 |
| St. Helens, OR | 58 mi | Apr 18 | Nov 7 |
Frequently asked questions
When is the last frost in Warrenton?
On average, the last spring frost (32°F) in Warrenton is around March 26. In about 1 year in 10 it comes after April 18, and in 9 years in 10 it comes after February 27.
When is the first frost in Warrenton?
The first fall frost (32°F) usually arrives around November 11. There’s a 10% chance of a freeze by October 22 and a 90% chance by December 8.
Can it frost in Warrenton 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 25.
What growing zone is Warrenton?
Warrenton is in USDA Plant Hardiness Zone 9a (average annual extreme minimum temperature 20 to 25°F), based on the 2023 USDA map for ZIP code 97121. See growing zones in Oregon.
More: all Oregon frost dates · Oregon growing zones · frost vs. freeze