When to plant in Eagle, ID
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Eagle, Idaho — all computed from Eagle's nearest NOAA weather station.
Eagle'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. Zone 7a means many perennials and even some tender shrubs overwinter in Eagle, while your frost dates still decide when annuals go out.
The average first fall frost in Eagle is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
NAMPA SUGAR FACTORY · 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 Eagle’s own odds, recorded at NAMPA SUGAR FACTORY.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 6 | May 16 | May 1 | Sep 15 | Sep 30 | Oct 14 |
| 32°F | May 18 | Apr 29 | Apr 15 | Sep 29 | Oct 13 | Oct 28 |
| 28°F | May 1 | Apr 11 | Mar 25 | Oct 9 | Oct 25 | Nov 10 |
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 Eagle, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 18 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.
Eagle planting FAQ
When is the last spring frost in Eagle, ID?
Plan for the last spring frost in Eagle around April 29 (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 Eagle, ID?
The first fall frost in Eagle typically arrives around October 13 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Eagle in?
Eagle 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 Eagle?
There are roughly 167 frost-free days in Eagle (a moderate growing season), running from the average last frost around April 29 to the first fall frost near October 13.
When should I plant tomatoes in Eagle?
In Eagle, start tomato seeds indoors around March 4–March 18, then transplant seedlings outdoors around May 6 once the danger of frost has passed.
Never miss a window in Eagle
An email when it’s time to start seeds, transplant, and sow — timed to Eagle’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Star · 7 km
- Meridian · 10 km
- Garden City · 10 km
- Middleton · 17 km
- Nampa · 18 km
- Boise City · 18 km
- Kuna · 19 km
- Caldwell · 21 km
Frost dates recorded at NAMPA SUGAR FACTORY, 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 Eagle, ID — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00106305. Retrieved from https://blissgarden.com/idaho/eagle.