When to plant in Junction City, KS
USDA Zone 6bEverything below — frost dates, hardiness zone, and what to plant when in Junction City, Kansas — is derived from the closest NOAA station with complete climate normals.
In zone 6b, Junction City gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
MILFORD LAKE · 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 Junction City’s own odds, recorded at MILFORD LAKE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 23 | Apr 8 | Oct 1 | Oct 17 | Oct 29 |
| 32°F | Apr 29 | Apr 12 | Mar 29 | Oct 13 | Oct 26 | Nov 7 |
| 28°F | Apr 19 | Apr 2 | Mar 15 | Oct 20 | Nov 3 | Nov 18 |
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 Junction City, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 19 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.
Junction City planting FAQ
When is the last spring frost in Junction City, KS?
Junction City's average last spring frost falls near April 12 — 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 Junction City, KS?
Expect Junction City's first fall frost near October 26 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Junction City in?
Junction City 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 Junction City?
Junction City has about 197 frost-free days — a moderate growing season — between the average last spring frost (April 12) and first fall frost (October 26).
When should I plant tomatoes in Junction City?
For Junction City, sow tomatoes indoors about February 15–March 1 and move the seedlings out around April 19, after the last spring frost.
Never miss a window in Junction City
An email when it’s time to start seeds, transplant, and sow — timed to Junction City’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at MILFORD LAKE, 7 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 Junction City, KS — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00145306. Retrieved from https://blissgarden.com/kansas/junction-city.