Ammon, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ammon, a city in Bonneville County, Idaho.
This Afternoon
50°F
Partly Sunny
Partly sunny. High near 50, with temperatures falling to around 47 in the afternoon. North wind around 6 mph.
7-day forecast for Ammon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 50°F | Partly Sunny | 6 mph N | 0% |
| Tonight | 34°F | Mostly Cloudy | 1 to 6 mph ENE | 1% |
| Wednesday | 50°F | Partly Sunny | 1 to 7 mph SW | 1% |
| Wednesday Night | 31°F | Areas Of Fog | 2 to 7 mph SSE | 0% |
| Thursday | 48°F | Areas Of Fog then Mostly Sunny | 2 to 6 mph SSW | 9% |
| Thursday Night | 32°F | Areas Of Fog | 2 to 7 mph SSW | 9% |
| Friday | 48°F | Mostly Sunny | 2 to 6 mph SSW | 1% |
| Friday Night | 31°F | Partly Cloudy | 3 mph SSE | 1% |
| Saturday | 51°F | Sunny | 3 mph ENE | 0% |
| Saturday Night | 33°F | Partly Cloudy | 3 mph E | 0% |
| Sunday | 57°F | Mostly Sunny | 5 mph S | 0% |
| Sunday Night | 37°F | Partly Cloudy | 5 mph SSE | 0% |
| Monday | 56°F | Mostly Sunny | 3 mph SW | 1% |
| Monday Night | 38°F | Mostly Cloudy | 3 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Ammon (43.472, -111.960). Updated through the day.
Growing snapshot for Ammon
Last spring frost
May 9
First fall frost
Oct 1
Growing season
142 days
Hardiness zone
5b
More local growing data for Ammon: nearby ZIP 83406 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Idaho Falls - Kifi, Id (6.5 mi from Ammon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.