Frost dates for 03282Wentworth, NH
The average last spring frost in Wentworth is May 12 and the average first fall frost is October 6, giving a typical growing season of about 146 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 12
- Average first fall frost
- Oct 6
- Growing season
- 146 days
Safer after May 25 (1-in-10 risk)
Possible by Sep 23 (1-in-10 risk)
Last frost typically in 192 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 11 · May 25 · Jun 9 | Sep 12 · Sep 26 · Oct 8 | 122 days | 100% |
| Frost / freeze (32°F) | Apr 30 · May 12 · May 25 | Sep 23 · Oct 6 · Oct 22 | 146 days | 100% |
| Hard freeze (28°F) | Apr 18 · Apr 30 · May 12 | Oct 5 · Oct 20 · Nov 4 | 172 days | 100% |
Planting calendar for Wentworth
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 11 – Jun 17 |
| Tomatoes | Transplant outdoors | May 28 – Jun 16 |
| Peppers | Start seeds indoors | Apr 11 – May 12 |
| Peppers | Transplant outdoors | Jun 11 – Jul 12 |
| Eggplant | Start seeds indoors | Apr 28 – May 27 |
| Eggplant | Transplant outdoors | Jun 11 – Jul 12 |
| Cucumbers | Sow outdoors | Jun 11 – Jun 26 |
| Summer squash | Sow outdoors | May 28 – Jul 12 |
| Winter squash & pumpkins | Sow outdoors | Jun 11 – Jul 12 |
| Snap beans | Sow outdoors | May 28 – Jul 19 |
| Sweet corn | Sow outdoors | May 28 – Jun 16 |
| Watermelon & cantaloupe | Sow outdoors | Jun 11 – Jul 12 |
| Okra | Sow outdoors | Jun 4 – Jun 27 |
| Peas | Sow outdoors (spring) | Apr 11 – May 27 |
| Potatoes | Plant outdoors (spring) | Apr 11 – Jun 11 |
| Onions | Start seeds indoors (spring) | Feb 28 – Mar 27 |
| Onions | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (spring) | Mar 24 – Apr 27 |
| Broccoli | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (fall) | Jun 6 – Jun 16 |
| Broccoli | Transplant outdoors (fall) | Jul 6 – Jul 17 |
| Cabbage | Start seeds indoors (spring) | Mar 14 – Apr 11 |
| Cabbage | Transplant outdoors (spring) | Apr 11 – May 12 |
| Cabbage | Start seeds indoors (fall) | May 27 – Jun 26 |
| Cabbage | Transplant outdoors (fall) | Jun 26 – Jul 27 |
| Leaf lettuce | Sow outdoors (spring) | Apr 11 – Jun 27 |
| Leaf lettuce | Sow outdoors (fall) | Jun 26 – Aug 12 |
| Spinach | Sow outdoors (spring) | Apr 4 – May 18 |
| Spinach | Sow outdoors (fall) | Jul 13 – Aug 17 |
| Radishes | Sow outdoors (spring) | Apr 11 – Jun 1 |
| Radishes | Sow outdoors (fall) | Jun 26 – Aug 27 |
| Kale | Sow outdoors (spring) | Apr 28 – May 18 |
| Kale | Sow outdoors (fall) | Jun 19 – Jul 27 |
| Carrots | Sow outdoors (spring) | May 12 – Jun 27 |
| Carrots | Sow outdoors (fall) | May 27 – Jul 12 |
| Garlic | Plant outdoors (fall) | Sep 26 – Oct 27 |
Where these dates come from
ZIP code 03282 is matched to the NOAA station Wentworth, NH, 0.6 km away, at 653 ft elevation (79 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Wentworth, NH (used) | 653 ft | May 12 | Oct 6 |
| Benton 5 Sw, NH | 1,200 ft | May 15 | Sep 28 |
| Plymouth, NH | 660 ft | May 20 | Sep 27 |
| Lincoln Nepp, NH | 807 ft | May 7 | Oct 4 |
Frost dates near Wentworth
- Warren, NH 03279 · last May 15, first Sep 28
- Rumney, NH 03266 · last May 20, first Sep 27
- Glencliff, NH 03238 · last May 15, first Sep 28
- Orford, NH 03777 · last May 15, first Sep 28
- Hebron, NH 03241 · last May 20, first Sep 27
- Pike, NH 03780 · last May 15, first Sep 28
- Lyme Center, NH 03769 · last May 15, first Sep 28
- Piermont, NH 03779 · last May 15, first Sep 28
Frequently asked questions
- When is the last frost in Wentworth, NH?
- For ZIP code 03282, the average last spring frost (32°F) is May 12, based on NOAA 1991-2020 climate normals for the Wentworth, NH weather station. There is a 1-in-10 chance of a frost after May 25.
- When is the first frost in Wentworth, NH?
- The average first fall frost (32°F) is October 6. There is a 1-in-10 chance of frost by September 23, so tender plants are at risk from that point on.
- How long is the growing season in 03282?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 146 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.