Streator 3 SE, IL Frost Dates & Growing Season

The two dates every Streator 3 SE garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Apr 12
~50% chance of frost after
First fall frost
Oct 28
~50% chance of frost before
Growing season
199 days
frost-free stretch
USDA zone
≈ 6a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Mar 30 Apr 12 Apr 25
First fall frost Nov 11 Oct 28 Oct 16
Hard freeze (28°F), median last Apr 1 · first Nov 8

Computed from NOAA 1991–2020 climate normals at the STREATOR 3 SE 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 Streator 3 SE

Computed from Streator 3 SE's own frost dates. Click any crop for the full zone-6 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Feb 15 – Mar 1 Apr 19 – Apr 26
🫑 Peppers Feb 1 – Feb 15 Apr 26 – May 3
🥬 Lettuce Mar 1 – Mar 15 Mar 15 – Mar 29 Mar 15 – Apr 12
🫛 Peas Mar 1 – Mar 15
🥕 Carrots Mar 22 – Apr 12
🥦 Broccoli Feb 22 – Mar 8 Mar 22 – Apr 5
🥬 Kale Mar 1 – Mar 15 Mar 15 – Mar 29 Mar 15 – Mar 29
🥒 Cucumbers Mar 15 – Mar 22 Apr 19 – Apr 26 Apr 19 – Apr 26
🥒 Zucchini Mar 15 – Mar 22 Apr 19 – Apr 26 Apr 19 – Apr 26
🫘 Green Beans (Bush) Apr 19 – Apr 26
🌽 Sweet Corn Apr 19 – Apr 26
🌿 Basil Mar 1 – Mar 15 Apr 19 – Apr 26 Apr 26 – May 3
🧄 Garlic Fall: Sep 16 – Oct 14

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 Streator 3 SE's dates automatically after a lookup.

Reading the season in Streator 3 SE

Roughly 199 frost-free days gives Streator 3 SE gardeners room for nearly every common vegetable. Warm-season crops go out after Apr 12; a fall garden sown in late summer matures comfortably before the Oct 28 frost.

Frequently asked questions

When is the last frost in Streator 3 SE, IL?

The average last spring frost in Streator 3 SE is around Apr 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 Streator 3 SE, IL?

The average first fall frost in Streator 3 SE arrives around Oct 28. 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 Streator 3 SE?

About 199 frost-free days on average, from Apr 12 to Oct 28. That fits nearly all common vegetables, though the longest-season melons and sweet potatoes benefit from transplants.

What USDA zone is Streator 3 SE in?

USDA zone 6a 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.