Topeka Municipal Airport, KS Frost Dates & Growing Season

The two dates every Topeka Municipal Airport 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 23
~50% chance of frost before
Growing season
194 days
frost-free stretch
USDA zone
≈ 6b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Mar 29 Apr 12 Apr 27
First fall frost Nov 4 Oct 23 Oct 8
Hard freeze (28°F), median last Mar 31 · first Nov 1

Computed from NOAA 1991–2020 climate normals at the TOPEKA MUNI AP 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 Topeka Municipal Airport

Computed from Topeka Municipal Airport'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 11 – Oct 9

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 Topeka Municipal Airport's dates automatically after a lookup.

Reading the season in Topeka Municipal Airport

Roughly 194 frost-free days gives Topeka Municipal Airport 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 23 frost.

Frequently asked questions

When is the last frost in Topeka Municipal Airport, KS?

The average last spring frost in Topeka Municipal Airport 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 Topeka Municipal Airport, KS?

The average first fall frost in Topeka Municipal Airport arrives around Oct 23. 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 Topeka Municipal Airport?

About 194 frost-free days on average, from Apr 12 to Oct 23. That fits nearly all common vegetables, though the longest-season melons and sweet potatoes benefit from transplants.

What USDA zone is Topeka Municipal Airport in?

USDA zone 6b 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.