🍂 2026 First Frost Dates for Auburn, Washington 98092
The first 36°F frost date is 30% likely to be on Oct 1. (See detailed probabilities below.)
The first 32°F light freeze date is 30% likely to be on Oct 17. (See detailed probabilities below.)
(See also 🌷 Last Spring Frost Dates.)
First frost date probabilities for Auburn, WA are based on historical climate data.
Always check your local forecast for the most up-to-date frost warnings.
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What is a First Frost Date?
The first fall frost signals the end of your local growing season. This date serves as an important deadline for gardeners and farmers. You'll need to complete harvesting before this point. Annuals and other tender plants will die back when frost hits, and perennial plants will enter their dormant phase for winter. Meanwhile, it's time to enjoy a cup of hot cocoa and a cozy sweater—and start planning your spring garden!
How to use the First Frost Date?
Watch your local weather forecasts in early fall to predict the first frost date. Harvest tender crops and protect vulnerable plants before frost arrives. For late-summer plantings, count backward from your area's average first frost date. This ensures your crops have enough time to mature. Keep track of when frost actually occurs in your garden each year. This helps you identify protected spots where the growing season might last longer.
First Frost Date Probabilities
| Probability of frost (36°F) on or before... | |
|---|---|
| 10% chance | Sep 19 |
| 20% chance | Sep 27 |
| 30% chance | Oct 1 |
| 40% chance | Oct 3 |
| 50% chance | Oct 6 |
| 60% chance | Oct 9 |
| 70% chance | Oct 14 |
| 80% chance | Oct 18 |
| 90% chance | Oct 26 |
| Probability of light freeze (32°F) on or before... | |
|---|---|
| 10% chance | Oct 5 |
| 20% chance | Oct 13 |
| 30% chance | Oct 17 |
| 40% chance | Oct 21 |
| 50% chance | Oct 25 |
| 60% chance | Oct 29 |
| 70% chance | Nov 1 |
| 80% chance | Nov 6 |
| 90% chance | Nov 12 |
| Probability of moderate freeze (28°F) on or before... | |
|---|---|
| 10% chance | Oct 24 |
| 20% chance | Oct 31 |
| 30% chance | Nov 3 |
| 40% chance | Nov 8 |
| 50% chance | Nov 12 |
| 60% chance | Nov 17 |
| 70% chance | Nov 23 |
| 80% chance | Nov 30 |
| 90% chance | Dec 8 |
| Probability of moderate hard freeze (24°F) on or before... | |
|---|---|
| 10% chance | Nov 8 |
| 20% chance | Nov 14 |
| 30% chance | Nov 21 |
| 40% chance | Nov 26 |
| 50% chance | Dec 1 |
| 60% chance | Dec 7 |
| 70% chance | Dec 13 |
| 80% chance | Dec 21 |
| 90% chance | Jan 3 |
| Probability of hard freeze (20°F) on or before... | |
|---|---|
| 10% chance | Nov 17 |
| 20% chance | Nov 28 |
| 30% chance | Dec 3 |
| 40% chance | Dec 11 |
| 50% chance | Dec 18 |
| 60% chance | Dec 26 |
| 70% chance | Jan 1 |
| 80% chance | Jan 14 |
| 90% chance | Feb 6 |
| Probability of severe hard freeze (16°F) on or before... | |
|---|---|
| 10% chance | Nov 25 |
| 20% chance | Dec 2 |
| 30% chance | Dec 10 |
| 40% chance | Dec 14 |
| 50% chance | Dec 22 |
| 60% chance | Dec 28 |
| 70% chance | Jan 1 |
| 80% chance | Jan 9 |
| 90% chance | Feb 2 |
Agricultural climatic data from weather station: LANDSBURG (USC00454486:frost)