Snowden, WA Frost Dates & Growing Season

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

Last spring frost
May 12
~50% chance of frost after
First fall frost
Oct 11
~50% chance of frost before
Growing season
152 days
frost-free stretch
USDA zone
≈ 7a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Apr 25 May 12 Jun 7
First fall frost Oct 28 Oct 11 Sep 24
Hard freeze (28°F), median last Apr 23 · first Oct 28

Computed from NOAA 1991–2020 climate normals at the SNOWDEN 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 Snowden

Computed from Snowden's own frost dates. Click any crop for the full zone-7 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Mar 17 – Mar 31 May 19 – May 26
🫑 Peppers Mar 3 – Mar 17 May 26 – Jun 2
🥬 Lettuce Mar 31 – Apr 14 Apr 14 – Apr 28 Apr 14 – May 12
🫛 Peas Mar 31 – Apr 14
🥕 Carrots Apr 21 – May 12
🥦 Broccoli Mar 24 – Apr 7 Apr 21 – May 5
🥬 Kale Mar 31 – Apr 14 Apr 14 – Apr 28 Apr 14 – Apr 28
🥒 Cucumbers Apr 14 – Apr 21 May 19 – May 26 May 19 – May 26
🥒 Zucchini Apr 14 – Apr 21 May 19 – May 26 May 19 – May 26
🫘 Green Beans (Bush) May 19 – May 26
🌽 Sweet Corn May 19 – May 26
🌿 Basil Mar 31 – Apr 14 May 19 – May 26 May 26 – Jun 2
🧄 Garlic Fall: Aug 30 – Sep 27

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 Snowden's dates automatically after a lookup.

Reading the season in Snowden

Roughly 152 frost-free days gives Snowden gardeners room for nearly every common vegetable. Warm-season crops go out after May 12; a fall garden sown in late summer matures comfortably before the Oct 11 frost.

Frequently asked questions

When is the last frost in Snowden, WA?

The average last spring frost in Snowden is around May 12, 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 Snowden, WA?

The average first fall frost in Snowden arrives around Oct 11. 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 Snowden?

About 152 frost-free days on average, from May 12 to Oct 11. That fits nearly all common vegetables, though the longest-season melons and sweet potatoes benefit from transplants.

What USDA zone is Snowden in?

USDA zone 7a 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.