🌷 2026 Last Frost Dates for Conconully, Washington 98819
The last 36°F Spring frost date is 30% likely to be on May 21. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on May 6. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Conconully, WA are based on historical climate data.
Always check your local forecast for the most up-to-date frost warnings.
Book Recommendations (ads!)
📚 Growing Under Cover: Techniques for a More Productive, Weather-Resistant, Pest-Free Vegetable Garden
What is a Last Frost Date?
The last spring frost signals when your area is safe from freezing temperatures. Tender plants can now grow outdoors without cold damage! This marks the beginning of the growing season. Last spring frost serves as your essential starting point for planting warm-season crops. It's also time to remove winter protection from your perennials. Enjoy the longer days and warmer weather!
How to use the Last Frost Date?
Start seeds indoors several weeks before your last frost date. This gives plants time to reach transplanting size when weather permits. Plan your outdoor planting schedule around your area's average last frost date. Plant some crops before and some after this date to protect against weather changes. Look for spots in your yard where frost stays longer or disappears earlier. Create your own frost map to use all available growing space and extend your season. Keep watching your local weather forecast to catch any surprise late frosts.
Last Frost Date Probabilities
| Probability of frost (36°F) on or after… | |
|---|---|
| 10% chance | Jun 1 |
| 20% chance | May 25 |
| 30% chance | May 21 |
| 40% chance | May 17 |
| 50% chance | May 13 |
| 60% chance | May 10 |
| 70% chance | May 6 |
| 80% chance | May 2 |
| 90% chance | Apr 28 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | May 15 |
| 20% chance | May 10 |
| 30% chance | May 6 |
| 40% chance | May 2 |
| 50% chance | Apr 30 |
| 60% chance | Apr 27 |
| 70% chance | Apr 24 |
| 80% chance | Apr 20 |
| 90% chance | Apr 14 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | May 2 |
| 20% chance | Apr 27 |
| 30% chance | Apr 23 |
| 40% chance | Apr 18 |
| 50% chance | Apr 14 |
| 60% chance | Apr 10 |
| 70% chance | Apr 5 |
| 80% chance | Apr 1 |
| 90% chance | Mar 26 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Apr 14 |
| 20% chance | Apr 6 |
| 30% chance | Apr 1 |
| 40% chance | Mar 28 |
| 50% chance | Mar 24 |
| 60% chance | Mar 18 |
| 70% chance | Mar 13 |
| 80% chance | Mar 8 |
| 90% chance | Mar 4 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Mar 19 |
| 20% chance | Mar 12 |
| 30% chance | Mar 7 |
| 40% chance | Mar 3 |
| 50% chance | Feb 28 |
| 60% chance | Feb 26 |
| 70% chance | Feb 22 |
| 80% chance | Feb 17 |
| 90% chance | Feb 10 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Mar 6 |
| 20% chance | Feb 28 |
| 30% chance | Feb 25 |
| 40% chance | Feb 22 |
| 50% chance | Feb 17 |
| 60% chance | Feb 13 |
| 70% chance | Feb 8 |
| 80% chance | Feb 1 |
| 90% chance | Jan 20 |
Agricultural climatic data from weather station: OMAK AP (USW00094197:frost)