Iona, ID Weather & Growing Conditions
Overnight
51°F
Patchy Smoke
Patchy smoke. Mostly clear. Low around 51, with temperatures rising to around 54 overnight. South wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Patchy Smoke | 9 mph S | 0% |
| Tuesday | 80°F | Patchy Smoke | 6 to 12 mph SW | 0% |
| Tuesday Night | 54°F | Areas Of Smoke | 9 to 13 mph SSW | 0% |
| Wednesday | 84°F | Areas Of Smoke | 9 mph SW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 7 to 14 mph S | 0% |
| Thursday | 90°F | Sunny | 8 to 13 mph SSW | 0% |
| Thursday Night | 62°F | Clear | 7 to 15 mph S | 0% |
| Friday | 94°F | Sunny | 7 to 12 mph S | 0% |
| Friday Night | 65°F | Mostly Clear | 13 to 16 mph SSW | 0% |
| Saturday | 93°F | Sunny | 8 to 14 mph S | 0% |
| Saturday Night | 67°F | Mostly Clear | 10 to 16 mph SSW | 0% |
| Sunday | 92°F | Sunny | 8 to 18 mph SSW | 0% |
| Sunday Night | 66°F | Mostly Clear | 13 to 22 mph SSW | 1% |
| Monday | 91°F | Sunny | 9 to 17 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Iona, ID
Last spring frost
May 9
First fall frost
Oct 1
Growing season
142 days
Hardiness zone
5b
Explore more for Iona, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Idaho Falls - Kifi, Id (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.