🍂 2026 First Frost Dates for Elk, Washington 99009
A 36°F frost is always a risk here. (See detailed probabilities below.)
The first 32°F light freeze date is 30% likely to be on Sep 7. (See detailed probabilities below.)
(See also 🌷 Last Spring Frost Dates.)
First frost date probabilities for Elk, 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 | always |
| 20% chance | always |
| 30% chance | always |
| 40% chance | always |
| 50% chance | always |
| 60% chance | always |
| 70% chance | always |
| 80% chance | always |
| 90% chance | always |
| Probability of light freeze (32°F) on or before... | |
|---|---|
| 10% chance | Aug 28 |
| 20% chance | Sep 3 |
| 30% chance | Sep 7 |
| 40% chance | Sep 10 |
| 50% chance | Sep 14 |
| 60% chance | Sep 18 |
| 70% chance | Sep 21 |
| 80% chance | Sep 25 |
| 90% chance | Oct 1 |
| Probability of moderate freeze (28°F) on or before... | |
|---|---|
| 10% chance | Sep 14 |
| 20% chance | Sep 19 |
| 30% chance | Sep 23 |
| 40% chance | Sep 27 |
| 50% chance | Sep 29 |
| 60% chance | Oct 1 |
| 70% chance | Oct 4 |
| 80% chance | Oct 7 |
| 90% chance | Oct 14 |
| Probability of moderate hard freeze (24°F) on or before... | |
|---|---|
| 10% chance | Sep 27 |
| 20% chance | Oct 1 |
| 30% chance | Oct 3 |
| 40% chance | Oct 6 |
| 50% chance | Oct 10 |
| 60% chance | Oct 15 |
| 70% chance | Oct 20 |
| 80% chance | Oct 25 |
| 90% chance | Nov 3 |
| Probability of hard freeze (20°F) on or before... | |
|---|---|
| 10% chance | Oct 5 |
| 20% chance | Oct 12 |
| 30% chance | Oct 17 |
| 40% chance | Oct 23 |
| 50% chance | Oct 27 |
| 60% chance | Oct 31 |
| 70% chance | Nov 5 |
| 80% chance | Nov 11 |
| 90% chance | Nov 20 |
| Probability of severe hard freeze (16°F) on or before... | |
|---|---|
| 10% chance | Oct 18 |
| 20% chance | Oct 26 |
| 30% chance | Oct 31 |
| 40% chance | Nov 4 |
| 50% chance | Nov 10 |
| 60% chance | Nov 14 |
| 70% chance | Nov 20 |
| 80% chance | Nov 25 |
| 90% chance | Dec 2 |
Agricultural climatic data from weather station: DEER PARK AP (USW00094119:frost)