St. Anthony, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Anthony, a city in Fremont County, Idaho.
Tonight
44°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. Low around 44, with temperatures rising to around 47 overnight. Southeast wind around 5 mph. Chance of precipitation is 60%.
7-day forecast for St. Anthony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Showers And Thunderstorms Likely | 5 mph SE | 64% |
| Saturday | 62°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 61% |
| Saturday Night | 41°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 3 mph SE | 16% |
| Sunday | 66°F | Partly Sunny | 1 to 5 mph NNW | 2% |
| Sunday Night | 40°F | Mostly Clear | 2 to 6 mph E | 0% |
| Monday | 74°F | Sunny | 2 to 6 mph WSW | 0% |
| Monday Night | 43°F | Mostly Clear | 2 to 6 mph E | 0% |
| Tuesday | 74°F | Mostly Sunny | 3 to 7 mph NE | 0% |
| Tuesday Night | 44°F | Partly Cloudy | 2 to 6 mph ENE | 4% |
| Wednesday | 74°F | Sunny | 7 mph SW | 3% |
| Wednesday Night | 43°F | Mostly Clear | 7 mph ENE | 3% |
| Thursday | 77°F | Sunny | 7 mph S | 1% |
| Thursday Night | 45°F | Partly Cloudy | 3 to 7 mph ENE | 2% |
| Friday | 77°F | Mostly Sunny | 5 to 8 mph SE | 4% |
Forecast source: National Weather Service (api.weather.gov) for St. Anthony (43.966, -111.685). Updated through the day.
Growing snapshot for St. Anthony
Last spring frost
May 17
First fall frost
Sep 22
Growing season
126 days
Hardiness zone
5a
More local growing data for St. Anthony: nearby ZIP 83438 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Saint Anthony, Id (4 mi from St. Anthony). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.