Greenville 1 NNE, NH Frost Dates & Growing Season

The two dates every Greenville 1 NNE garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
May 10
~50% chance of frost after
First fall frost
Oct 6
~50% chance of frost before
Growing season
149 days
frost-free stretch
USDA zone
≈ 5b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Apr 26 May 10 May 27
First fall frost Oct 21 Oct 6 Sep 25
Hard freeze (28°F), median last Apr 26 · first Oct 18

Computed from NOAA 1991–2020 climate normals at the GREENVILLE 1 NNE station. "Safe" means frost past that date happens only about one year in ten. Your exact garden can still run days either way with elevation and terrain — check your own ZIP with the frost date lookup.

Planting windows for Greenville 1 NNE

Computed from Greenville 1 NNE's own frost dates. Click any crop for the full zone-5 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Mar 15 – Mar 29 May 17 – May 24
🫑 Peppers Mar 1 – Mar 15 May 24 – May 31
🥬 Lettuce Mar 29 – Apr 12 Apr 12 – Apr 26 Apr 12 – May 10
🫛 Peas Mar 29 – Apr 12
🥕 Carrots Apr 19 – May 10
🥦 Broccoli Mar 22 – Apr 5 Apr 19 – May 3
🥬 Kale Mar 29 – Apr 12 Apr 12 – Apr 26 Apr 12 – Apr 26
🥒 Cucumbers Apr 12 – Apr 19 May 17 – May 24 May 17 – May 24
🥒 Zucchini Apr 12 – Apr 19 May 17 – May 24 May 17 – May 24
🫘 Green Beans (Bush) May 17 – May 24
🌽 Sweet Corn May 17 – May 24
🌿 Basil Mar 29 – Apr 12 May 17 – May 24 May 24 – May 31
🧄 Garlic Fall: Aug 25 – Sep 22

Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Greenville 1 NNE's dates automatically after a lookup.

Reading the season in Greenville 1 NNE

At about 149 frost-free days, Greenville 1 NNE rewards efficiency: start warm-season crops indoors, favor short-season varieties, and lean on cold-tolerant crops — peas, kale, roots — that shrug off the shoulder-season frosts on either end.

Frequently asked questions

When is the last frost in Greenville 1 NNE, NH?

The average last spring frost in Greenville 1 NNE is around May 10, based on 1991–2020 climate normals. That's a median — about half of years see a later frost, so tender crops are safest going out a week or two after this date.

When is the first frost in Greenville 1 NNE, NH?

The average first fall frost in Greenville 1 NNE arrives around Oct 6. Crops still in the garden need to mature before then, and frost-tender plants need harvesting or protection as the date approaches.

How long is the growing season in Greenville 1 NNE?

About 149 frost-free days on average, from May 10 to Oct 6. That favors short-season varieties and transplants for warm-season crops, with cool-season vegetables doing the heavy lifting in spring and fall.

What USDA zone is Greenville 1 NNE in?

USDA zone 5b on the 2023 Plant Hardiness Zone Map. Note that zones describe winter cold, not frost timing — these frost dates are the numbers to plan plantings around.