🌷 2026 Last Frost Dates for Medford, Massachusetts 02155
The last 36°F Spring frost date is 30% likely to be on Apr 22. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Apr 8. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Medford, MA 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 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 | May 1 |
| 20% chance | Apr 26 |
| 30% chance | Apr 22 |
| 40% chance | Apr 19 |
| 50% chance | Apr 17 |
| 60% chance | Apr 15 |
| 70% chance | Apr 12 |
| 80% chance | Apr 9 |
| 90% chance | Apr 6 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Apr 17 |
| 20% chance | Apr 11 |
| 30% chance | Apr 8 |
| 40% chance | Apr 6 |
| 50% chance | Apr 4 |
| 60% chance | Apr 3 |
| 70% chance | Apr 1 |
| 80% chance | Mar 30 |
| 90% chance | Mar 25 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Apr 6 |
| 20% chance | Apr 3 |
| 30% chance | Apr 1 |
| 40% chance | Mar 30 |
| 50% chance | Mar 28 |
| 60% chance | Mar 25 |
| 70% chance | Mar 22 |
| 80% chance | Mar 19 |
| 90% chance | Mar 15 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Apr 1 |
| 20% chance | Mar 28 |
| 30% chance | Mar 24 |
| 40% chance | Mar 21 |
| 50% chance | Mar 19 |
| 60% chance | Mar 16 |
| 70% chance | Mar 13 |
| 80% chance | Mar 10 |
| 90% chance | Mar 6 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Mar 25 |
| 20% chance | Mar 20 |
| 30% chance | Mar 17 |
| 40% chance | Mar 14 |
| 50% chance | Mar 11 |
| 60% chance | Mar 8 |
| 70% chance | Mar 5 |
| 80% chance | Mar 2 |
| 90% chance | Feb 24 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Mar 19 |
| 20% chance | Mar 13 |
| 30% chance | Mar 8 |
| 40% chance | Mar 5 |
| 50% chance | Mar 2 |
| 60% chance | Feb 27 |
| 70% chance | Feb 23 |
| 80% chance | Feb 16 |
| 90% chance | Feb 9 |
Agricultural climatic data from weather station: BOSTON LOGAN INTL AP (USW00014739:frost)