Frost dates for 02816Coventry, RI
The average last spring frost in Coventry is April 22 and the average first fall frost is October 20, giving a typical growing season of about 179 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 22
- Average first fall frost
- Oct 20
- Growing season
- 179 days
Safer after May 4 (1-in-10 risk)
Possible by Oct 5 (1-in-10 risk)
Last frost typically in 172 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 3 · May 16 | Sep 29 · Oct 9 · Oct 23 | 157 days | 100% |
| Frost / freeze (32°F) | Apr 10 · Apr 22 · May 4 | Oct 5 · Oct 20 · Nov 4 | 179 days | 100% |
| Hard freeze (28°F) | Mar 31 · Apr 10 · Apr 22 | Oct 17 · Nov 1 · Nov 14 | 204 days | 100% |
Planting calendar for Coventry
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 30 |
| 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 10 |
| Summer squash | Sow outdoors | May 8 – Jun 22 |
| Winter squash & pumpkins | Sow outdoors | May 22 – Jun 22 |
| Snap beans | Sow outdoors | May 8 – Aug 2 |
| Sweet corn | Sow outdoors | May 8 – Jun 30 |
| 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 20 – Jun 30 |
| Broccoli | Transplant outdoors (fall) | Jul 20 – Jul 31 |
| Cabbage | Start seeds indoors (spring) | Feb 22 – Mar 22 |
| Cabbage | Transplant outdoors (spring) | Mar 22 – Apr 22 |
| Cabbage | Start seeds indoors (fall) | Jun 10 – Jul 10 |
| Cabbage | Transplant outdoors (fall) | Jul 10 – Aug 10 |
| Leaf lettuce | Sow outdoors (spring) | Mar 22 – Jun 7 |
| Leaf lettuce | Sow outdoors (fall) | Jul 10 – Aug 26 |
| Spinach | Sow outdoors (spring) | Mar 15 – Apr 28 |
| Spinach | Sow outdoors (fall) | Jul 27 – Aug 31 |
| Radishes | Sow outdoors (spring) | Mar 22 – May 12 |
| Radishes | Sow outdoors (fall) | Jul 10 – Sep 10 |
| Kale | Sow outdoors (spring) | Apr 8 – Apr 28 |
| Kale | Sow outdoors (fall) | Jul 3 – Aug 10 |
| Carrots | Sow outdoors (spring) | Apr 22 – Jun 7 |
| Carrots | Sow outdoors (fall) | Jun 10 – Jul 26 |
| Garlic | Plant outdoors (fall) | Oct 10 – Nov 10 |
Where these dates come from
ZIP code 02816 is matched to the NOAA station Coventry 2, RI, 3 km away, at 280 ft elevation (34 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Coventry 2, RI (used) | 280 ft | Apr 22 | Oct 20 |
| Providence T F Green Ap, RI | 60 ft | Apr 11 | Oct 30 |
| Kingston 1 Nw, RI | 115 ft | Apr 27 | Oct 15 |
| N Foster 1 E, RI | 630 ft | Apr 25 | Oct 19 |
Frost dates near Coventry
- West Warwick, RI 02893 · last Apr 11, first Oct 30
- Fiskeville, RI 02823 · last Apr 11, first Oct 30
- Hope, RI 02831 · last Apr 11, first Oct 30
- West Greenwich, RI 02817 · last Apr 22, first Oct 20
- East Greenwich, RI 02818 · last Apr 11, first Oct 30
- Cranston, RI 02921 · last Apr 11, first Oct 30
- Warwick, RI 02886 · last Apr 11, first Oct 30
- Clayville, RI 02815 · last Apr 25, first Oct 19
Frequently asked questions
- When is the last frost in Coventry, RI?
- For ZIP code 02816, the average last spring frost (32°F) is April 22, based on NOAA 1991-2020 climate normals for the Coventry 2, RI weather station. There is a 1-in-10 chance of a frost after May 4.
- When is the first frost in Coventry, RI?
- The average first fall frost (32°F) is October 20. 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 02816?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 179 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.