Frost dates for 07068Roseland, NJ
The average last spring frost in Roseland is April 18 and the average first fall frost is October 24, giving a typical growing season of about 187 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 18
- Average first fall frost
- Oct 24
- Growing season
- 187 days
Safer after May 7 (1-in-10 risk)
Possible by Oct 8 (1-in-10 risk)
Last frost typically in 167 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 17 · May 1 · May 18 | Sep 30 · Oct 11 · Oct 26 | 161 days | 100% |
| Frost / freeze (32°F) | Apr 3 · Apr 18 · May 7 | Oct 8 · Oct 24 · Nov 6 | 187 days | 100% |
| Hard freeze (28°F) | Mar 22 · Apr 3 · Apr 19 | Oct 21 · Nov 4 · Nov 20 | 212 days | 100% |
Planting calendar for Roseland
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 18 – May 24 |
| Tomatoes | Transplant outdoors | May 4 – Jul 4 |
| Peppers | Start seeds indoors | Mar 18 – Apr 18 |
| Peppers | Transplant outdoors | May 18 – Jun 18 |
| Eggplant | Start seeds indoors | Apr 4 – May 3 |
| Eggplant | Transplant outdoors | May 18 – Jun 18 |
| Cucumbers | Sow outdoors | May 18 – Jul 14 |
| Summer squash | Sow outdoors | May 4 – Jun 18 |
| Winter squash & pumpkins | Sow outdoors | May 18 – Jun 18 |
| Snap beans | Sow outdoors | May 4 – Aug 6 |
| Sweet corn | Sow outdoors | May 4 – Jul 4 |
| Watermelon & cantaloupe | Sow outdoors | May 18 – Jun 18 |
| Okra | Sow outdoors | May 11 – Jun 3 |
| Peas | Sow outdoors (spring) | Mar 18 – May 3 |
| Potatoes | Plant outdoors (spring) | Mar 18 – May 18 |
| Onions | Start seeds indoors (spring) | Feb 4 – Mar 3 |
| Onions | Transplant outdoors (spring) | Apr 4 – May 3 |
| Broccoli | Start seeds indoors (spring) | Feb 28 – Apr 3 |
| Broccoli | Transplant outdoors (spring) | Apr 4 – May 3 |
| Broccoli | Start seeds indoors (fall) | Jun 24 – Jul 4 |
| Broccoli | Transplant outdoors (fall) | Jul 24 – Aug 4 |
| Cabbage | Start seeds indoors (spring) | Feb 18 – Mar 18 |
| Cabbage | Transplant outdoors (spring) | Mar 18 – Apr 18 |
| Cabbage | Start seeds indoors (fall) | Jun 14 – Jul 14 |
| Cabbage | Transplant outdoors (fall) | Jul 14 – Aug 14 |
| Leaf lettuce | Sow outdoors (spring) | Mar 18 – Jun 3 |
| Leaf lettuce | Sow outdoors (fall) | Jul 14 – Aug 30 |
| Spinach | Sow outdoors (spring) | Mar 11 – Apr 24 |
| Spinach | Sow outdoors (fall) | Jul 31 – Sep 4 |
| Radishes | Sow outdoors (spring) | Mar 18 – May 8 |
| Radishes | Sow outdoors (fall) | Jul 14 – Sep 14 |
| Kale | Sow outdoors (spring) | Apr 4 – Apr 24 |
| Kale | Sow outdoors (fall) | Jul 7 – Aug 14 |
| Carrots | Sow outdoors (spring) | Apr 18 – Jun 3 |
| Carrots | Sow outdoors (fall) | Jun 14 – Jul 30 |
| Garlic | Plant outdoors (fall) | Oct 14 – Nov 14 |
Where these dates come from
ZIP code 07068 is matched to the NOAA station Essex Fells Service Bldg, NJ, 2 km away, at 350 ft elevation (81 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Essex Fells Service Bldg, NJ (used) | 350 ft | Apr 18 | Oct 24 |
| Caldwell Essex Co Ap, NJ | 173 ft | Apr 14 | Oct 28 |
| Canoe Brook, NJ | 180 ft | Apr 18 | Oct 27 |
| Little Falls, NJ | 150 ft | Apr 15 | Oct 28 |
Frost dates near Roseland
- Essex Fells, NJ 07021 · last Apr 18, first Oct 24
- Caldwell, NJ 07007 · last Apr 18, first Oct 24
- Livingston, NJ 07039 · last Apr 18, first Oct 24
- East Hanover, NJ 07936 · last Apr 18, first Oct 27
- Verona, NJ 07044 · last Apr 18, first Oct 24
- West Orange, NJ 07052 · last Apr 18, first Oct 24
- Orange, NJ 07051 · last Apr 18, first Oct 24
- Newark, NJ 07184 · last Apr 18, first Oct 24
Frequently asked questions
- When is the last frost in Roseland, NJ?
- For ZIP code 07068, the average last spring frost (32°F) is April 18, based on NOAA 1991-2020 climate normals for the Essex Fells Service Bldg, NJ weather station. There is a 1-in-10 chance of a frost after May 7.
- When is the first frost in Roseland, NJ?
- The average first fall frost (32°F) is October 24. There is a 1-in-10 chance of frost by October 8, so tender plants are at risk from that point on.
- How long is the growing season in 07068?
- 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.