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Frost dates for Lakeport 2, NH
NOAA weather station USC00274480 at 500 ft elevation. Based on 29 years within 1991-2020. Last verified 2026-10-17.
Last spring freeze (32°F)
Apr 30
median: freeze still happened after this date in half of years
May 4 30% risk · May 13 10% risk
First fall freeze (32°F)
Oct 18
median: a freeze had happened by this date in half of years
Oct 4 10% chance of a freeze earlier than this
Freeze-free season
170 days
median length between last spring and first fall 32°F freeze
How to read these dates
Spring: a "10% risk" date means NOAA's 1991-2020 data put the chance of a 32°F or colder night after that date at 10%. The "30% risk" date is the convention used by some popular frost calculators (the Old Farmer's Almanac says it uses a 30% probability threshold, source). Fall: a "10%" date means a 10% chance the first freeze comes before it. Source: NOAA readme.
Full table for this station
| Threshold | Spring: latest-freeze date at risk of 10% / 30% / 50% | Fall: first-freeze date at chance of 10% / 50% |
|---|---|---|
| 36°F (frost possible) | May 23 / May 16 / May 10 | Sep 25 / Oct 5 |
| 32°F (freeze) | May 13 / May 4 / Apr 30 | Oct 4 / Oct 18 |
| 28°F (hard freeze) | Apr 30 / Apr 22 / Apr 17 | Oct 16 / Nov 1 |
Also at 32°F, last-freeze 70% date Apr 25 and 90% date Apr 19 (frost still likely after these early dates). Data quality: Standard: 24+ years of qualifying data. Source: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00274480, read 2026-10-17.
Is Memorial Day safe here?
Many New England gardeners wait for Memorial Day (it falls between May 25 and May 31). At this station, NOAA's chance of a 32°F or colder night after May 25 is under 10%, and after May 31 is under 10%. Your own spot may differ. See all stations.
UNH Extension says that for central New Hampshire, Memorial Day is a conservative estimate of the last frost date (read 2026-10-17).
Your planting schedule
Pick how cautious you want to be. The dates apply UNH Extension's per-crop rules (UNH fact sheet, read 2026-10-17) to this station's last-freeze date. UNH's sheet does not say which probability its "last frost" means, so you choose. These are planning dates, not instructions; follow your seed packet and the weather.
Showing the schedule for the 2027 season (dates repeat yearly). Table below defaults to Typical; it updates when you choose.
| Crop | Start seeds indoors | Outdoors | UNH Extension rule used |
|---|---|---|---|
| Spinach | Feb 9 – Mar 16 | Set out Mar 23 – Apr 13 | Start 4-6 wk before set-out; set out 3-6 wk before last frost. |
| Broccoli | Feb 23 – Mar 23 | Set out Apr 6 – Apr 20 | Start 4-6 wk before set-out; set out 2-4 wk before last frost. |
| Brussels sprout | Feb 23 – Mar 23 | Set out Apr 6 – Apr 20 | Start 4-6 wk before set-out; set out 2-4 wk before last frost. |
| Cabbage | Feb 23 – Mar 9 | Set out Apr 6 | Start 4-6 wk before set-out; set out 4 wk before last frost. |
| Kale | Feb 23 – Mar 9 | Set out Apr 6 | Start 4-6 wk before set-out; set out 4 wk before last frost. |
| Kohlrabi | Feb 23 – Mar 9 | Set out Apr 6 | Start 4-6 wk before set-out; set out 4 wk before last frost. |
| Leek | Jan 26 – Feb 9 | Set out Apr 6 | Start 8-10 wk before set-out; set out 4 wk before last frost. |
| Lettuce | Mar 2 – Mar 16 | Set out Apr 6 – Apr 13 | Start 4-5 wk before set-out; set out 3-4 wk before last frost. |
| Onion | Jan 26 – Feb 9 | Set out Apr 6 | Start 8-10 wk before set-out; set out 4 wk before last frost. |
| Radish | — | Sow Apr 6 – Apr 20 | Sow seed in garden 2-4 wk before last frost. |
| Turnip | — | Sow Apr 6 – Apr 20 | Sow seed in garden 2-4 wk before last frost. |
| Parsley | Feb 2 – Feb 16 | Set out Apr 13 – Apr 20 | Start 9-10 wk before set-out; set out 2-3 wk before last frost. |
| Cauliflower | Mar 9 – Mar 23 | Set out Apr 20 | Start 4-6 wk before set-out; set out 2 wk before last frost. |
| Potato | — | Sow Apr 20 – Apr 27 | Plant seed potatoes 1-2 wk before last frost. |
| Swiss chard | Mar 9 – Mar 23 | Set out Apr 20; or sow Apr 6 | Start 4-6 wk before set-out; set out 2 wk before last frost; or sow seed 4 wk before last frost. |
| Bean | — | Sow on/after May 4 | Sow seed in garden after last frost. |
| Celery | Feb 9 – Feb 23 | Set out on/after May 4 | Start 10-12 wk before set-out; set out after last frost. |
| Parsnip | — | Sow on/after May 4 | Sow seed in garden after last frost. |
| Cucumber | Apr 13 – Apr 27 | Set out May 11 – May 18 Direct sow when soil reaches 70°F | Start 3-4 wk before set-out; set out 1-2 wk after last frost; or sow when soil warms to 70°F. |
| Sweet potato | — | Plant slips May 11 – May 18 | Plant slips (young plants) 1-2 wk after last frost. |
| Tomato | Mar 16 – Apr 6 | Set out May 11 – May 18 | Start 6-8 wk before set-out; set out 1-2 wk after last frost. |
| Basil | Mar 23 – Apr 6 | Set out May 18 | Start 6-8 wk before set-out; set out 2 wk after last frost. |
| Eggplant | Mar 9 – Mar 30 | Set out May 18 – May 25 | Start 8-10 wk before set-out; set out 2-3 wk after last frost. |
| Melon | Apr 20 – Apr 27 | Set out May 18 | Start 3-4 wk before set-out; set out 2 wk after last frost. |
| Pepper | Mar 9 – Mar 23 | Set out May 18 | Start 8-10 wk before set-out; set out 2 wk after last frost. |
| Pumpkin | Apr 20 – Apr 27 | Set out May 18 Direct sow when soil reaches 70°F | Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F. |
| Summer squash | Apr 20 – Apr 27 | Set out May 18 Direct sow when soil reaches 70°F | Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F. |
| Winter squash | Apr 20 – Apr 27 | Set out May 18 Direct sow when soil reaches 70°F | Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F. |
| Zucchini | Apr 20 – Apr 27 | Set out May 18 Direct sow when soil reaches 70°F | Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F. |
| Rutabaga | — | Sow Jun 15 – Jul 15 | Sow seed in garden mid-June to mid-July (fixed dates, not tied to frost). |
| Beet | — | Sow when soil reaches 45°F (use a soil thermometer) | Sow seed in garden when soil warms to 45°F. |
| Carrot | — | Sow when soil reaches 60°F (use a soil thermometer) | Sow seed in garden when soil warms to 60°F. |
| Corn | — | Sow when soil reaches 60°F (use a soil thermometer) | Sow seed in garden when soil warms to 60°F. |
| Pea | — | Sow as soon as soil thaws | Sow seed in garden as soon as soil thaws. |
Fall: when the garden ends
At this station the median first 32°F freeze is Oct 18; there is a 10% chance of one before Oct 4. Tender crops (tomatoes, peppers, basil) can be damaged at 33-36°F (Almanac.com notes some plants are damaged in that range); the 36°F first-frost date here is median Oct 5 and 10% date Sep 25. UNH Extension notes many fall vegetables tolerate mild frosts down to about 28°F (median first 28°F here: Nov 1), and that row covers can extend the season. UNH: Fall vegetable gardening, read 2026-10-17.
Your garden is not the weather station
This station sits at 500 ft. UNH Extension says first-freeze dates vary "even between relatively close locations, based on factors such as elevation" (source), and notes that gardeners who keep garden journals can use their own records. Gardeners on Reddit describe the same thing: elevation and cold spots change when they can plant (for example r/vermont). Treat these dates as a starting point.
Nearby stations
- Plymouth, NH: 19 mi away, 660 ft elevation, median last 32°F freeze May 20
- Salisbury, NH: 19 mi away, 550 ft elevation, median last 32°F freeze May 14
- Tamworth 4, NH: 24 mi away, 541 ft elevation, median last 32°F freeze May 16
- Grafton, NH: 24 mi away, 830 ft elevation, median last 32°F freeze May 21
- Concord Muni AP, NH: 25 mi away, 346 ft elevation, median last 32°F freeze May 8