Frost dates for 04628Dennysville, ME
The average last spring frost in Dennysville is April 29 and the average first fall frost is October 25, giving a typical growing season of about 178 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 29
- Average first fall frost
- Oct 25
- Growing season
- 178 days
Safer after May 11 (1-in-10 risk)
Possible by Oct 8 (1-in-10 risk)
Last frost typically in 179 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Apr 30 · May 12 · May 28 | Sep 26 · Oct 8 · Oct 23 | 149 days | 100% |
| Frost / freeze (32°F) | Apr 16 · Apr 29 · May 11 | Oct 8 · Oct 25 · Nov 7 | 178 days | 100% |
| Hard freeze (28°F) | Apr 1 · Apr 12 · Apr 27 | Oct 24 · Nov 6 · Nov 21 | 207 days | 100% |
Planting calendar for Dennysville
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Mar 29 – Jun 4 |
| Tomatoes | Transplant outdoors | May 15 – Jul 5 |
| Peppers | Start seeds indoors | Mar 29 – Apr 29 |
| Peppers | Transplant outdoors | May 29 – Jun 29 |
| Eggplant | Start seeds indoors | Apr 15 – May 14 |
| Eggplant | Transplant outdoors | May 29 – Jun 29 |
| Cucumbers | Sow outdoors | May 29 – Jul 15 |
| Summer squash | Sow outdoors | May 15 – Jun 29 |
| Winter squash & pumpkins | Sow outdoors | May 29 – Jun 29 |
| Snap beans | Sow outdoors | May 15 – Aug 7 |
| Sweet corn | Sow outdoors | May 15 – Jul 5 |
| Watermelon & cantaloupe | Sow outdoors | May 29 – Jun 29 |
| Okra | Sow outdoors | May 22 – Jun 14 |
| Peas | Sow outdoors (spring) | Mar 29 – May 14 |
| Potatoes | Plant outdoors (spring) | Mar 29 – May 29 |
| Onions | Start seeds indoors (spring) | Feb 15 – Mar 14 |
| Onions | Transplant outdoors (spring) | Apr 15 – May 14 |
| Broccoli | Start seeds indoors (spring) | Mar 11 – Apr 14 |
| Broccoli | Transplant outdoors (spring) | Apr 15 – May 14 |
| Broccoli | Start seeds indoors (fall) | Jun 25 – Jul 5 |
| Broccoli | Transplant outdoors (fall) | Jul 25 – Aug 5 |
| Cabbage | Start seeds indoors (spring) | Mar 1 – Mar 29 |
| Cabbage | Transplant outdoors (spring) | Mar 29 – Apr 29 |
| Cabbage | Start seeds indoors (fall) | Jun 15 – Jul 15 |
| Cabbage | Transplant outdoors (fall) | Jul 15 – Aug 15 |
| Leaf lettuce | Sow outdoors (spring) | Mar 29 – Jun 14 |
| Leaf lettuce | Sow outdoors (fall) | Jul 15 – Aug 31 |
| Spinach | Sow outdoors (spring) | Mar 22 – May 5 |
| Spinach | Sow outdoors (fall) | Aug 1 – Sep 5 |
| Radishes | Sow outdoors (spring) | Mar 29 – May 19 |
| Radishes | Sow outdoors (fall) | Jul 15 – Sep 15 |
| Kale | Sow outdoors (spring) | Apr 15 – May 5 |
| Kale | Sow outdoors (fall) | Jul 8 – Aug 15 |
| Carrots | Sow outdoors (spring) | Apr 29 – Jun 14 |
| Carrots | Sow outdoors (fall) | Jun 15 – Jul 31 |
| Garlic | Plant outdoors (fall) | Oct 15 – Nov 15 |
Where these dates come from
ZIP code 04628 is matched to the NOAA station Eastport, ME, 18.4 km away, at 85 ft elevation (29 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Eastport, ME (used) | 85 ft | Apr 29 | Oct 25 |
| Robbinston, ME | 115 ft | May 5 | Oct 13 |
| Woodland, ME | 123 ft | Apr 21 | Oct 26 |
| Wesley, ME | 410 ft | May 2 | Oct 15 |
Frost dates near Dennysville
- Pembroke, ME 04666 · last May 5, first Oct 13
- Lubec, ME 04652 · last Apr 29, first Oct 25
- Perry, ME 04667 · last May 5, first Oct 13
- Whiting, ME 04691 · last Apr 29, first Oct 25
- Eastport, ME 04631 · last Apr 29, first Oct 25
- Meddybemps, ME 04657 · last Apr 21, first Oct 26
- Robbinston, ME 04671 · last May 5, first Oct 13
- East Machias, ME 04630 · last Apr 29, first Oct 25
Frequently asked questions
- When is the last frost in Dennysville, ME?
- For ZIP code 04628, the average last spring frost (32°F) is April 29, based on NOAA 1991-2020 climate normals for the Eastport, ME weather station. There is a 1-in-10 chance of a frost after May 11.
- When is the first frost in Dennysville, ME?
- The average first fall frost (32°F) is October 25. There is a 1-in-10 chance of frost by October 8, so tender plants are at risk from that point on.
- How long is the growing season in 04628?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 178 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.