Frost dates for 02345Manomet, MA
The average last spring frost in Manomet is April 30 and the average first fall frost is October 16, giving a typical growing season of about 170 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 30
- Average first fall frost
- Oct 16
- Growing season
- 170 days
Safer after May 12 (1-in-10 risk)
Possible by Oct 3 (1-in-10 risk)
Last frost typically in 180 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 29 · May 10 · May 24 | Sep 23 · Oct 5 · Oct 19 | 148 days | 100% |
| Frost / freeze (32°F) | Apr 19 · Apr 30 · May 12 | Oct 3 · Oct 16 · Nov 1 | 170 days | 100% |
| Hard freeze (28°F) | Apr 3 · Apr 18 · May 2 | Oct 14 · Oct 27 · Nov 11 | 192 days | 100% |
Planting calendar for Manomet
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 30 – Jun 5 |
| Tomatoes | Transplant outdoors | May 16 – Jun 26 |
| Peppers | Start seeds indoors | Mar 30 – Apr 30 |
| Peppers | Transplant outdoors | May 30 – Jun 30 |
| Eggplant | Start seeds indoors | Apr 16 – May 15 |
| Eggplant | Transplant outdoors | May 30 – Jun 30 |
| Cucumbers | Sow outdoors | May 30 – Jul 6 |
| Summer squash | Sow outdoors | May 16 – Jun 30 |
| Winter squash & pumpkins | Sow outdoors | May 30 – Jun 30 |
| Snap beans | Sow outdoors | May 16 – Jul 29 |
| Sweet corn | Sow outdoors | May 16 – Jun 26 |
| Watermelon & cantaloupe | Sow outdoors | May 30 – Jun 30 |
| Okra | Sow outdoors | May 23 – Jun 15 |
| Peas | Sow outdoors (spring) | Mar 30 – May 15 |
| Potatoes | Plant outdoors (spring) | Mar 30 – May 30 |
| Onions | Start seeds indoors (spring) | Feb 16 – Mar 15 |
| Onions | Transplant outdoors (spring) | Apr 16 – May 15 |
| Broccoli | Start seeds indoors (spring) | Mar 12 – Apr 15 |
| Broccoli | Transplant outdoors (spring) | Apr 16 – May 15 |
| Broccoli | Start seeds indoors (fall) | Jun 16 – Jun 26 |
| Broccoli | Transplant outdoors (fall) | Jul 16 – Jul 27 |
| Cabbage | Start seeds indoors (spring) | Mar 2 – Mar 30 |
| Cabbage | Transplant outdoors (spring) | Mar 30 – Apr 30 |
| Cabbage | Start seeds indoors (fall) | Jun 6 – Jul 6 |
| Cabbage | Transplant outdoors (fall) | Jul 6 – Aug 6 |
| Leaf lettuce | Sow outdoors (spring) | Mar 30 – Jun 15 |
| Leaf lettuce | Sow outdoors (fall) | Jul 6 – Aug 22 |
| Spinach | Sow outdoors (spring) | Mar 23 – May 6 |
| Spinach | Sow outdoors (fall) | Jul 23 – Aug 27 |
| Radishes | Sow outdoors (spring) | Mar 30 – May 20 |
| Radishes | Sow outdoors (fall) | Jul 6 – Sep 6 |
| Kale | Sow outdoors (spring) | Apr 16 – May 6 |
| Kale | Sow outdoors (fall) | Jun 29 – Aug 6 |
| Carrots | Sow outdoors (spring) | Apr 30 – Jun 15 |
| Carrots | Sow outdoors (fall) | Jun 6 – Jul 22 |
| Garlic | Plant outdoors (fall) | Oct 6 – Nov 6 |
Where these dates come from
ZIP code 02345 is matched to the NOAA station Plymouth Muni Ap, MA, 12.5 km away, at 149 ft elevation (18 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Plymouth Muni Ap, MA (used) | 149 ft | Apr 30 | Oct 16 |
| Plymouth-Kingston, MA | 45 ft | Apr 15 | Nov 1 |
| E Wareham, MA | 30 ft | Apr 21 | Oct 24 |
| E Sandwich, MA | 150 ft | Apr 26 | Oct 26 |
Frost dates near Manomet
- White Horse Beach, MA 02381 · last Apr 15, first Nov 1
- Plymouth, MA 02360 · last Apr 30, first Oct 16
- South Carver, MA 02366 · last Apr 30, first Oct 16
- Sagamore Beach, MA 02562 · last Apr 21, first Oct 24
- Duxbury, MA 02331 · last Apr 15, first Nov 1
- Sagamore, MA 02561 · last Apr 21, first Oct 24
- East Wareham, MA 02538 · last Apr 21, first Oct 24
- Carver, MA 02330 · last Apr 30, first Oct 16
Frequently asked questions
- When is the last frost in Manomet, MA?
- For ZIP code 02345, the average last spring frost (32°F) is April 30, based on NOAA 1991-2020 climate normals for the Plymouth Muni Ap, MA weather station. There is a 1-in-10 chance of a frost after May 12.
- When is the first frost in Manomet, MA?
- The average first fall frost (32°F) is October 16. There is a 1-in-10 chance of frost by October 3, so tender plants are at risk from that point on.
- How long is the growing season in 02345?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 170 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.