Idaho Falls, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Idaho Falls, a city in Bonneville County, Idaho.
Today
82°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 82. West wind 2 to 9 mph.
7-day forecast for Idaho Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Patchy Smoke | 2 to 9 mph W | 0% |
| Tonight | 50°F | Areas Of Smoke | 3 to 9 mph SSW | 0% |
| Wednesday | 86°F | Areas Of Smoke | 3 to 8 mph SW | 0% |
| Wednesday Night | 54°F | Mostly Clear | 7 mph S | 0% |
| Thursday | 93°F | Sunny | 3 to 8 mph SW | 0% |
| Thursday Night | 58°F | Clear | 5 to 8 mph S | 0% |
| Friday | 97°F | Sunny | 3 to 8 mph ESE | 0% |
| Friday Night | 61°F | Mostly Clear | 6 to 14 mph SW | 0% |
| Saturday | 97°F | Sunny | 3 to 10 mph WSW | 0% |
| Saturday Night | 62°F | Mostly Clear | 6 to 15 mph SSW | 0% |
| Sunday | 95°F | Sunny | 3 to 16 mph SSW | 0% |
| Sunday Night | 62°F | Mostly Clear | 7 to 20 mph SW | 1% |
| Monday | 94°F | Sunny | 5 to 15 mph SSW | 1% |
| Monday Night | 60°F | Mostly Clear | 7 to 17 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Idaho Falls (43.489, -112.036). Updated through the day.
Growing snapshot for Idaho Falls
Last spring frost
May 9
First fall frost
Oct 1
Growing season
142 days
Hardiness zone
5b
More local growing data for Idaho Falls: nearby ZIP 83404 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Idaho Falls - Kifi, Id (6 mi from Idaho Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.