When to plant in Oakville, MO
USDA Zone 7aEverything below — frost dates, hardiness zone, and what to plant when in Oakville, Missouri — is derived from the closest NOAA station with complete climate normals.
Oakville's nearest full-normals station sits about 17 km out, so treat these as a close estimate — local microclimate can nudge your first and last frost. In zone 7a, Oakville supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
CAHOKIA · 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 Oakville’s own odds, recorded at CAHOKIA.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 3 | Apr 18 | Apr 4 | Oct 5 | Oct 18 | Oct 28 |
| 32°F | Apr 20 | Apr 6 | Mar 22 | Oct 14 | Oct 27 | Nov 7 |
| 28°F | Apr 10 | Mar 27 | Mar 11 | Oct 25 | Nov 5 | Nov 23 |
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 Oakville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 21 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.
Oakville planting FAQ
When is the last spring frost in Oakville, MO?
Plan for the last spring frost in Oakville around April 6 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Oakville, MO?
Expect Oakville's first fall frost near October 27 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Oakville in?
Oakville is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Oakville?
Oakville has about 204 frost-free days — a moderate growing season — between the average last spring frost (April 6) and first fall frost (October 27).
When should I plant tomatoes in Oakville?
For Oakville, sow tomatoes indoors about February 9–February 23 and move the seedlings out around April 13, after the last spring frost.
Never miss a window in Oakville
An email when it’s time to start seeds, transplant, and sow — timed to Oakville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at CAHOKIA, 17 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 Oakville, MO — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00111160. Retrieved from https://blissgarden.com/missouri/oakville.