Frost dates for 06763Morris, CT
The average last spring frost in Morris is May 8 and the average first fall frost is October 5, giving a typical growing season of about 151 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 8
- Average first fall frost
- Oct 5
- Growing season
- 151 days
Safer after May 22 (1-in-10 risk)
Possible by Sep 25 (1-in-10 risk)
Last frost typically in 188 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) | May 4 · May 19 · May 31 | Sep 15 · Sep 27 · Oct 7 | 130 days | 100% |
| Frost / freeze (32°F) | Apr 24 · May 8 · May 22 | Sep 25 · Oct 5 · Oct 21 | 151 days | 100% |
| Hard freeze (28°F) | Apr 11 · Apr 26 · May 11 | Oct 3 · Oct 18 · Nov 4 | 176 days | 100% |
Planting calendar for Morris
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 | Apr 7 – Jun 13 |
| Tomatoes | Transplant outdoors | May 24 – Jun 15 |
| Peppers | Start seeds indoors | Apr 7 – May 8 |
| Peppers | Transplant outdoors | Jun 7 – Jul 8 |
| Eggplant | Start seeds indoors | Apr 24 – May 23 |
| Eggplant | Transplant outdoors | Jun 7 – Jul 8 |
| Cucumbers | Sow outdoors | Jun 7 – Jun 25 |
| Summer squash | Sow outdoors | May 24 – Jul 8 |
| Winter squash & pumpkins | Sow outdoors | Jun 7 – Jul 8 |
| Snap beans | Sow outdoors | May 24 – Jul 18 |
| Sweet corn | Sow outdoors | May 24 – Jun 15 |
| Watermelon & cantaloupe | Sow outdoors | Jun 7 – Jul 8 |
| Okra | Sow outdoors | May 31 – Jun 23 |
| Peas | Sow outdoors (spring) | Apr 7 – May 23 |
| Potatoes | Plant outdoors (spring) | Apr 7 – Jun 7 |
| Onions | Start seeds indoors (spring) | Feb 24 – Mar 23 |
| Onions | Transplant outdoors (spring) | Apr 24 – May 23 |
| Broccoli | Start seeds indoors (spring) | Mar 20 – Apr 23 |
| Broccoli | Transplant outdoors (spring) | Apr 24 – May 23 |
| Broccoli | Start seeds indoors (fall) | Jun 5 – Jun 15 |
| Broccoli | Transplant outdoors (fall) | Jul 5 – Jul 16 |
| Cabbage | Start seeds indoors (spring) | Mar 10 – Apr 7 |
| Cabbage | Transplant outdoors (spring) | Apr 7 – May 8 |
| Cabbage | Start seeds indoors (fall) | May 26 – Jun 25 |
| Cabbage | Transplant outdoors (fall) | Jun 25 – Jul 26 |
| Leaf lettuce | Sow outdoors (spring) | Apr 7 – Jun 23 |
| Leaf lettuce | Sow outdoors (fall) | Jun 25 – Aug 11 |
| Spinach | Sow outdoors (spring) | Mar 31 – May 14 |
| Spinach | Sow outdoors (fall) | Jul 12 – Aug 16 |
| Radishes | Sow outdoors (spring) | Apr 7 – May 28 |
| Radishes | Sow outdoors (fall) | Jun 25 – Aug 26 |
| Kale | Sow outdoors (spring) | Apr 24 – May 14 |
| Kale | Sow outdoors (fall) | Jun 18 – Jul 26 |
| Carrots | Sow outdoors (spring) | May 8 – Jun 23 |
| Carrots | Sow outdoors (fall) | May 26 – Jul 11 |
| Garlic | Plant outdoors (fall) | Sep 25 – Oct 26 |
Where these dates come from
ZIP code 06763 is matched to the NOAA station Bakersville, CT, 22 km away, at 686 ft elevation (223 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Bakersville, CT (used) | 686 ft | May 8 | Oct 5 |
| Burlington, CT | 505 ft | Apr 25 | Oct 18 |
| Barkhamsted, CT | 710 ft | Apr 30 | Oct 17 |
| Norfolk 2 Sw, CT | 1,340 ft | May 3 | Oct 11 |
Frost dates near Morris
- Lakeside, CT 06758 · last May 8, first Oct 5
- Northfield, CT 06778 · last May 8, first Oct 5
- Bethlehem, CT 06751 · last May 8, first Oct 5
- Bantam, CT 06750 · last May 8, first Oct 5
- Thomaston, CT 06787 · last Apr 25, first Oct 18
- Litchfield, CT 06759 · last May 3, first Oct 11
- Watertown, CT 06795 · last May 8, first Oct 5
- New Preston Marble Dale, CT 06777 · last May 8, first Oct 5
Frequently asked questions
- When is the last frost in Morris, CT?
- For ZIP code 06763, the average last spring frost (32°F) is May 8, based on NOAA 1991-2020 climate normals for the Bakersville, CT weather station. There is a 1-in-10 chance of a frost after May 22.
- When is the first frost in Morris, CT?
- The average first fall frost (32°F) is October 5. There is a 1-in-10 chance of frost by September 25, so tender plants are at risk from that point on.
- How long is the growing season in 06763?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 151 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.