The last 36°F Spring frost date is 30% likely to be on Apr 30. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Apr 1. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Aurora, OR are based on historical climate data.
Always check your local forecast for the most up-to-date frost warnings.
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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!
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.
| Probability of frost (36°F) on or after… | |
|---|---|
| 10% chance | May 7 |
| 20% chance | May 3 |
| 30% chance | Apr 30 |
| 40% chance | Apr 27 |
| 50% chance | Apr 23 |
| 60% chance | Apr 18 |
| 70% chance | Apr 14 |
| 80% chance | Apr 9 |
| 90% chance | Apr 2 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Apr 18 |
| 20% chance | Apr 8 |
| 30% chance | Apr 1 |
| 40% chance | Mar 27 |
| 50% chance | Mar 22 |
| 60% chance | Mar 16 |
| 70% chance | Mar 10 |
| 80% chance | Feb 28 |
| 90% chance | Feb 20 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Mar 11 |
| 20% chance | Feb 28 |
| 30% chance | Feb 24 |
| 40% chance | Feb 19 |
| 50% chance | Feb 14 |
| 60% chance | Feb 8 |
| 70% chance | Feb 2 |
| 80% chance | Jan 24 |
| 90% chance | Jan 9 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Feb 19 |
| 20% chance | Feb 11 |
| 30% chance | Feb 5 |
| 40% chance | Jan 31 |
| 50% chance | Jan 20 |
| 60% chance | Jan 10 |
| 70% chance | Jan 3 |
| 80% chance | Dec 27 |
| 90% chance | Dec 13 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 15 |
| 20% chance | Feb 6 |
| 30% chance | Jan 31 |
| 40% chance | Jan 13 |
| 50% chance | Jan 4 |
| 60% chance | Dec 31 |
| 70% chance | Dec 24 |
| 80% chance | Dec 16 |
| 90% chance | Dec 7 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 14 |
| 20% chance | Feb 1 |
| 30% chance | Jan 5 |
| 40% chance | Dec 31 |
| 50% chance | Dec 28 |
| 60% chance | Dec 23 |
| 70% chance | Dec 18 |
| 80% chance | Dec 13 |
| 90% chance | Dec 7 |
Agricultural climatic data from weather station: AURORA STATE AP (USW00094281)