Beaufort Wwtp, SC Frost Dates & Growing Season

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

Last spring frost
Mar 3
~50% chance of frost after
First fall frost
Dec 9
~50% chance of frost before
Growing season
281 days
frost-free stretch
USDA zone
≈ 9a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Feb 2 Mar 3 Mar 20
First fall frost Jan 4 Dec 9 Nov 21
Hard freeze (28°F), median last Feb 9 · first Dec 28

Computed from NOAA 1991–2020 climate normals at the BEAUFORT WWTP 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 Beaufort Wwtp

Computed from Beaufort Wwtp's own frost dates. Click any crop for the full zone-9 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Jan 6 – Jan 20 Mar 10 – Mar 17
🫑 Peppers Dec 23 – Jan 6 Mar 17 – Mar 24
🥬 Lettuce Jan 20 – Feb 3 Feb 3 – Feb 17 Feb 3 – Mar 3
🫛 Peas Jan 20 – Feb 3
🥕 Carrots Feb 10 – Mar 3
🥦 Broccoli Jan 13 – Jan 27 Feb 10 – Feb 24
🥬 Kale Jan 20 – Feb 3 Feb 3 – Feb 17 Feb 3 – Feb 17
🥒 Cucumbers Feb 3 – Feb 10 Mar 10 – Mar 17 Mar 10 – Mar 17
🥒 Zucchini Feb 3 – Feb 10 Mar 10 – Mar 17 Mar 10 – Mar 17
🫘 Green Beans (Bush) Mar 10 – Mar 17
🌽 Sweet Corn Mar 10 – Mar 17
🌿 Basil Jan 20 – Feb 3 Mar 10 – Mar 17 Mar 17 – Mar 24
🧄 Garlic Fall: Oct 28 – Nov 25

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 Beaufort Wwtp's dates automatically after a lookup.

Reading the season in Beaufort Wwtp

With roughly 281 frost-free days, Beaufort Wwtp gardens fit long-season crops — melons, winter squash, sweet potatoes — with room left for spring and fall rounds of greens and roots. The first frost around Dec 9 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Beaufort Wwtp, SC?

The average last spring frost in Beaufort Wwtp is around Mar 3, 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 Beaufort Wwtp, SC?

The average first fall frost in Beaufort Wwtp arrives around Dec 9. 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 Beaufort Wwtp?

About 281 frost-free days on average, from Mar 3 to Dec 9. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Beaufort Wwtp in?

USDA zone 9a 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.