St. Anthony, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Anthony, a city in Fremont County, Idaho.
Today
83°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 83. South southwest wind 5 to 9 mph, with gusts as high as 18 mph.
7-day forecast for St. Anthony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Smoke | 5 to 9 mph SSW | 0% |
| Tonight | 46°F | Patchy Smoke | 5 to 9 mph ESE | 1% |
| Wednesday | 86°F | Patchy Smoke | 5 to 9 mph SSW | 0% |
| Wednesday Night | 49°F | Mostly Clear | 7 mph ESE | 0% |
| Thursday | 92°F | Sunny | 5 to 9 mph SSE | 0% |
| Thursday Night | 54°F | Clear | 8 mph ESE | 0% |
| Friday | 96°F | Sunny | 3 to 9 mph SSE | 0% |
| Friday Night | 56°F | Mostly Clear | 7 to 13 mph SE | 0% |
| Saturday | 95°F | Sunny | 5 to 13 mph NE | 0% |
| Saturday Night | 57°F | Mostly Clear | 5 to 12 mph SE | 0% |
| Sunday | 95°F | Sunny | 5 to 15 mph SSE | 0% |
| Sunday Night | 58°F | Mostly Clear | 6 to 21 mph SSW | 1% |
| Monday | 93°F | Sunny | 5 to 14 mph SE | 1% |
| Monday Night | 57°F | Partly Cloudy | 7 to 17 mph SSE | 1% |
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 Aug 4, 2026.