Ammon, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ammon, a city in Bonneville County, Idaho.
This Afternoon
70°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 65 in the afternoon. South wind around 7 mph. Chance of precipitation is 90%.
7-day forecast for Ammon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms | 7 mph S | 88% |
| Tonight | 47°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 7 mph S | 72% |
| Saturday | 62°F | Chance Showers And Thunderstorms | 3 to 7 mph SSW | 38% |
| Saturday Night | 45°F | Partly Cloudy | 0 to 3 mph SSW | 12% |
| Sunday | 69°F | Mostly Sunny | 0 to 5 mph WSW | 0% |
| Sunday Night | 46°F | Mostly Clear | 3 mph E | 0% |
| Monday | 75°F | Sunny | 5 mph NNE | 0% |
| Monday Night | 49°F | Partly Cloudy | 5 mph E | 0% |
| Tuesday | 75°F | Mostly Sunny | 5 mph NNE | 0% |
| Tuesday Night | 50°F | Partly Cloudy | 5 mph SSE | 6% |
| Wednesday | 76°F | Sunny | 3 to 7 mph SSW | 3% |
| Wednesday Night | 49°F | Mostly Clear | 6 mph SE | 3% |
| Thursday | 79°F | Sunny | 5 mph S | 3% |
| Thursday Night | 52°F | Partly Cloudy | 6 mph SE | 1% |
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 Sep 18, 2026.