Frost dates for 14420Brockport, NY
The average last spring frost in Brockport is April 24 and the average first fall frost is October 30, giving a typical growing season of about 187 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 24
- Average first fall frost
- Oct 30
- Growing season
- 187 days
Safer after May 7 (1-in-10 risk)
Possible by Oct 12 (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 23 · May 4 · May 18 | Oct 1 · Oct 14 · Nov 1 | 163 days | 100% |
| Frost / freeze (32°F) | Apr 12 · Apr 24 · May 7 | Oct 12 · Oct 30 · Nov 12 | 187 days | 100% |
| Hard freeze (28°F) | Mar 31 · Apr 11 · Apr 22 | Oct 27 · Nov 10 · Nov 24 | 211 days | 100% |
Planting calendar for Brockport
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 24 – May 30 |
| Tomatoes | Transplant outdoors | May 10 – Jul 10 |
| Peppers | Start seeds indoors | Mar 24 – Apr 24 |
| Peppers | Transplant outdoors | May 24 – Jun 24 |
| Eggplant | Start seeds indoors | Apr 10 – May 9 |
| Eggplant | Transplant outdoors | May 24 – Jun 24 |
| Cucumbers | Sow outdoors | May 24 – Jul 20 |
| Summer squash | Sow outdoors | May 10 – Jun 24 |
| Winter squash & pumpkins | Sow outdoors | May 24 – Jun 24 |
| Snap beans | Sow outdoors | May 10 – Aug 12 |
| Sweet corn | Sow outdoors | May 10 – Jul 10 |
| Watermelon & cantaloupe | Sow outdoors | May 24 – Jun 24 |
| Okra | Sow outdoors | May 17 – Jun 9 |
| Peas | Sow outdoors (spring) | Mar 24 – May 9 |
| Potatoes | Plant outdoors (spring) | Mar 24 – May 24 |
| Onions | Start seeds indoors (spring) | Feb 10 – Mar 9 |
| Onions | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (spring) | Mar 6 – Apr 9 |
| Broccoli | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (fall) | Jun 30 – Jul 10 |
| Broccoli | Transplant outdoors (fall) | Jul 30 – Aug 10 |
| Cabbage | Start seeds indoors (spring) | Feb 24 – Mar 24 |
| Cabbage | Transplant outdoors (spring) | Mar 24 – Apr 24 |
| Cabbage | Start seeds indoors (fall) | Jun 20 – Jul 20 |
| Cabbage | Transplant outdoors (fall) | Jul 20 – Aug 20 |
| Leaf lettuce | Sow outdoors (spring) | Mar 24 – Jun 9 |
| Leaf lettuce | Sow outdoors (fall) | Jul 20 – Sep 5 |
| Spinach | Sow outdoors (spring) | Mar 17 – Apr 30 |
| Spinach | Sow outdoors (fall) | Aug 6 – Sep 10 |
| Radishes | Sow outdoors (spring) | Mar 24 – May 14 |
| Radishes | Sow outdoors (fall) | Jul 20 – Sep 20 |
| Kale | Sow outdoors (spring) | Apr 10 – Apr 30 |
| Kale | Sow outdoors (fall) | Jul 13 – Aug 20 |
| Carrots | Sow outdoors (spring) | Apr 24 – Jun 9 |
| Carrots | Sow outdoors (fall) | Jun 20 – Aug 5 |
| Garlic | Plant outdoors (fall) | Oct 20 – Nov 20 |
Where these dates come from
ZIP code 14420 is matched to the NOAA station Brockport, NY, 1.3 km away, at 498 ft elevation (24 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Brockport, NY (used) | 498 ft | Apr 24 | Oct 30 |
| Albion, NY | 472 ft | May 1 | Oct 20 |
| Rochester Gtr Intl Ap, NY | 533 ft | Apr 24 | Oct 25 |
| Batavia, NY | 913 ft | May 3 | Oct 16 |
Frost dates near Brockport
- Clarkson, NY 14430 · last Apr 24, first Oct 30
- Adams Basin, NY 14410 · last Apr 24, first Oct 25
- Hamlin, NY 14464 · last May 1, first Oct 20
- Clarendon, NY 14429 · last May 1, first Oct 20
- Spencerport, NY 14559 · last Apr 24, first Oct 25
- Holley, NY 14470 · last May 1, first Oct 20
- Fancher, NY 14452 · last May 1, first Oct 20
- Morton, NY 14508 · last May 1, first Oct 20
Frequently asked questions
- When is the last frost in Brockport, NY?
- For ZIP code 14420, the average last spring frost (32°F) is April 24, based on NOAA 1991-2020 climate normals for the Brockport, NY weather station. There is a 1-in-10 chance of a frost after May 7.
- When is the first frost in Brockport, NY?
- The average first fall frost (32°F) is October 30. There is a 1-in-10 chance of frost by October 12, so tender plants are at risk from that point on.
- How long is the growing season in 14420?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 187 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.