Ammon, ID Weather & Growing Conditions
Tonight
37°F
Isolated Rain Showers
Isolated rain showers before 1am. Mostly cloudy. Low around 37, with temperatures rising to around 40 overnight. South wind 3 to 8 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 37°F | Isolated Rain Showers | 3 to 8 mph S | 18% |
| Sunday | 63°F | Mostly Sunny | 5 to 8 mph SSW | 3% |
| Sunday Night | 38°F | Mostly Clear | 5 to 8 mph ESE | 0% |
| Monday | 70°F | Sunny | 0 to 12 mph SSE | 0% |
| Monday Night | 43°F | Mostly Clear | 6 to 9 mph E | 0% |
| Tuesday | 72°F | Mostly Sunny | 3 to 13 mph SSE | 1% |
| Tuesday Night | 46°F | Slight Chance Showers And Thunderstorms then Chance Light Rain | 6 to 13 mph S | 26% |
| Wednesday | 71°F | Mostly Sunny | 7 to 15 mph S | 11% |
| Wednesday Night | 45°F | Mostly Clear | 7 to 16 mph S | 3% |
| Thursday | 75°F | Sunny | 8 to 17 mph S | 2% |
| Thursday Night | 47°F | Mostly Clear | 6 to 16 mph SSE | 1% |
| Friday | 75°F | Sunny | 13 to 20 mph SSE | 5% |
| Friday Night | 47°F | Partly Cloudy | 10 to 17 mph S | 9% |
| Saturday | 71°F | Slight Chance Light Rain then Mostly Sunny | 13 to 17 mph S | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ammon, ID
Last spring frost
Jun 9
First fall frost
Sep 11
Growing season
93 days
Hardiness zone
5b
Explore more for Ammon, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Idaho Falls 16 Se, Id (1.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.