When to plant in Lee's Summit, MO
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Lee's Summit, Missouri — all computed from Lee's Summit's nearest NOAA weather station.
Zone 6b means Lee's Summit sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
LEES SUMMIT MUNI AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Lee's Summit’s own odds, recorded at LEES SUMMIT MUNI AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 4 | Apr 19 | Apr 3 | Oct 2 | Oct 19 | Nov 1 |
| 32°F | Apr 24 | Apr 7 | Mar 21 | Oct 14 | Oct 29 | Nov 12 |
| 28°F | Apr 11 | Mar 28 | Mar 10 | Oct 24 | Nov 7 | Nov 24 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Lee's Summit, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Lee's Summit planting FAQ
When is the last spring frost in Lee's Summit, MO?
Lee's Summit's average last spring frost falls near April 7 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Lee's Summit, MO?
Expect Lee's Summit's first fall frost near October 29 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Lee's Summit in?
Lee's Summit is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Lee's Summit?
There are roughly 205 frost-free days in Lee's Summit (a moderate growing season), running from the average last frost around April 7 to the first fall frost near October 29.
When should I plant tomatoes in Lee's Summit?
In Lee's Summit, start tomato seeds indoors around February 10–February 24, then transplant seedlings outdoors around April 14 once the danger of frost has passed.
Never miss a window in Lee's Summit
An email when it’s time to start seeds, transplant, and sow — timed to Lee's Summit’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Raytown · 10 km
- Grandview · 13 km
- Blue Springs · 14 km
- Raymore · 15 km
- Belton · 17 km
- Grain Valley · 18 km
- Independence · 18 km
- Leawood · 21 km
Frost dates recorded at LEES SUMMIT MUNI AP, 4 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Lee's Summit, MO — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053879. Retrieved from https://blissgarden.com/missouri/lees-summit.