Frost dates for 02324Bridgewater, MA
The average last spring frost in Bridgewater is April 22 and the average first fall frost is October 19, giving a typical growing season of about 178 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 22
- Average first fall frost
- Oct 19
- Growing season
- 178 days
Safer after May 5 (1-in-10 risk)
Possible by Oct 5 (1-in-10 risk)
Last frost typically in 173 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 24 · May 5 · May 18 | Sep 26 · Oct 7 · Oct 22 | 155 days | 100% |
| Frost / freeze (32°F) | Apr 8 · Apr 22 · May 5 | Oct 5 · Oct 19 · Nov 3 | 178 days | 100% |
| Hard freeze (28°F) | Mar 27 · Apr 6 · Apr 20 | Oct 16 · Oct 31 · Nov 15 | 205 days | 100% |
Planting calendar for Bridgewater
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 22 – May 28 |
| Tomatoes | Transplant outdoors | May 8 – Jun 29 |
| Peppers | Start seeds indoors | Mar 22 – Apr 22 |
| Peppers | Transplant outdoors | May 22 – Jun 22 |
| Eggplant | Start seeds indoors | Apr 8 – May 7 |
| Eggplant | Transplant outdoors | May 22 – Jun 22 |
| Cucumbers | Sow outdoors | May 22 – Jul 9 |
| Summer squash | Sow outdoors | May 8 – Jun 22 |
| Winter squash & pumpkins | Sow outdoors | May 22 – Jun 22 |
| Snap beans | Sow outdoors | May 8 – Aug 1 |
| Sweet corn | Sow outdoors | May 8 – Jun 29 |
| Watermelon & cantaloupe | Sow outdoors | May 22 – Jun 22 |
| Okra | Sow outdoors | May 15 – Jun 7 |
| Peas | Sow outdoors (spring) | Mar 22 – May 7 |
| Potatoes | Plant outdoors (spring) | Mar 22 – May 22 |
| Onions | Start seeds indoors (spring) | Feb 8 – Mar 7 |
| Onions | Transplant outdoors (spring) | Apr 8 – May 7 |
| Broccoli | Start seeds indoors (spring) | Mar 4 – Apr 7 |
| Broccoli | Transplant outdoors (spring) | Apr 8 – May 7 |
| Broccoli | Start seeds indoors (fall) | Jun 19 – Jun 29 |
| Broccoli | Transplant outdoors (fall) | Jul 19 – Jul 30 |
| Cabbage | Start seeds indoors (spring) | Feb 22 – Mar 22 |
| Cabbage | Transplant outdoors (spring) | Mar 22 – Apr 22 |
| Cabbage | Start seeds indoors (fall) | Jun 9 – Jul 9 |
| Cabbage | Transplant outdoors (fall) | Jul 9 – Aug 9 |
| Leaf lettuce | Sow outdoors (spring) | Mar 22 – Jun 7 |
| Leaf lettuce | Sow outdoors (fall) | Jul 9 – Aug 25 |
| Spinach | Sow outdoors (spring) | Mar 15 – Apr 28 |
| Spinach | Sow outdoors (fall) | Jul 26 – Aug 30 |
| Radishes | Sow outdoors (spring) | Mar 22 – May 12 |
| Radishes | Sow outdoors (fall) | Jul 9 – Sep 9 |
| Kale | Sow outdoors (spring) | Apr 8 – Apr 28 |
| Kale | Sow outdoors (fall) | Jul 2 – Aug 9 |
| Carrots | Sow outdoors (spring) | Apr 22 – Jun 7 |
| Carrots | Sow outdoors (fall) | Jun 9 – Jul 25 |
| Garlic | Plant outdoors (fall) | Oct 9 – Nov 9 |
Where these dates come from
ZIP code 02324 is matched to the NOAA station Brockton, MA, 8.3 km away, at 75 ft elevation (3 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Brockton, MA (used) | 75 ft | Apr 22 | Oct 19 |
| Bridgewater, MA | 40 ft | May 1 | Oct 9 |
| Taunton, MA | 20 ft | Apr 22 | Oct 19 |
| Middleboro, MA | 45 ft | Apr 23 | Oct 16 |
Frost dates near Bridgewater
- Bridgewater, MA 02325 · last Apr 22, first Oct 19
- Elmwood, MA 02337 · last Apr 22, first Oct 19
- East Bridgewater, MA 02333 · last Apr 22, first Oct 19
- West Bridgewater, MA 02379 · last Apr 22, first Oct 19
- Raynham, MA 02767 · last Apr 22, first Oct 19
- Middleboro, MA 02344 · last May 2, first Oct 8
- Halifax, MA 02338 · last Apr 15, first Nov 1
- Monponsett, MA 02350 · last Apr 15, first Nov 1
Frequently asked questions
- When is the last frost in Bridgewater, MA?
- For ZIP code 02324, the average last spring frost (32°F) is April 22, based on NOAA 1991-2020 climate normals for the Brockton, MA weather station. There is a 1-in-10 chance of a frost after May 5.
- When is the first frost in Bridgewater, MA?
- The average first fall frost (32°F) is October 19. There is a 1-in-10 chance of frost by October 5, so tender plants are at risk from that point on.
- How long is the growing season in 02324?
- 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.