Irwin, ID Weather & Growing Conditions
Tonight
33°F
Scattered Rain Showers
Scattered rain showers before 3am. Mostly cloudy. Low around 33, with temperatures rising to around 35 overnight. North northwest wind around 5 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Scattered Rain Showers | 5 mph NNW | 27% |
| Sunday | 47°F | Partly Sunny | 2 to 7 mph NNW | 5% |
| Sunday Night | 34°F | Mostly Clear | 8 mph NE | 0% |
| Monday | 54°F | Sunny | 5 to 10 mph SSE | 0% |
| Monday Night | 38°F | Mostly Clear | 6 to 10 mph N | 0% |
| Tuesday | 57°F | Mostly Sunny | 6 to 13 mph SSE | 3% |
| Tuesday Night | 42°F | Slight Chance Showers And Thunderstorms then Chance Light Rain | 5 to 8 mph SE | 28% |
| Wednesday | 54°F | Slight Chance Light Rain then Mostly Sunny | 6 to 9 mph S | 16% |
| Wednesday Night | 41°F | Mostly Clear | 6 to 12 mph SSE | 3% |
| Thursday | 59°F | Sunny | 6 to 13 mph S | 3% |
| Thursday Night | 42°F | Mostly Clear | 5 to 14 mph ESE | 1% |
| Friday | 58°F | Mostly Sunny | 8 to 15 mph SE | 5% |
| Friday Night | 43°F | Partly Cloudy | 7 to 14 mph SSE | 13% |
| Saturday | 55°F | Slight Chance Light Rain then Slight Chance Showers And Thunderstorms | 8 to 14 mph S | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Irwin, ID
Growing season
69 days
Hardiness zone
6a
Explore more for Irwin, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Swan Valley, Id (8.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.