When to plant in Cody, WY
USDA Zone 5aEverything below — frost dates, hardiness zone, and what to plant when in Cody, Wyoming — is derived from the closest NOAA station with complete climate normals.
In zone 5a, Cody gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
CODY · 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 Cody’s own odds, recorded at CODY.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 11 | May 25 | May 11 | Sep 6 | Sep 21 | Oct 4 |
| 32°F | May 27 | May 12 | Apr 27 | Sep 17 | Oct 1 | Oct 14 |
| 28°F | May 16 | Apr 30 | Apr 12 | Sep 27 | Oct 10 | Oct 27 |
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 Cody, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 17 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.
Cody planting FAQ
When is the last spring frost in Cody, WY?
On average, the last spring frost in Cody is around May 12 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Cody, WY?
In Cody, the first 32°F freeze of fall lands around October 1 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Cody in?
Cody is in USDA hardiness zone 5a. In zone 5a, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Cody?
Cody has about 142 frost-free days — a short growing season — between the average last spring frost (May 12) and first fall frost (October 1).
When should I plant tomatoes in Cody?
For Cody, sow tomatoes indoors about March 17–March 31 and move the seedlings out around May 19, after the last spring frost.
Never miss a window in Cody
An email when it’s time to start seeds, transplant, and sow — timed to Cody’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at CODY, 5 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 Cody, WY — Frost Dates & Zone 5a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00481840. Retrieved from https://blissgarden.com/wyoming/cody.