Cascade, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cascade, a city in Valley County, Idaho.
Tonight
47°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1am, then patchy fog and a chance of showers and thunderstorms between 1am and 3am, then patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 47. North northwest wind around 3 mph. Chance of precipitation is 70%.
7-day forecast for Cascade
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Showers And Thunderstorms Likely | 3 mph NNW | 69% |
| Saturday | 66°F | Areas Of Fog then Mostly Sunny | 2 mph NNW | 14% |
| Saturday Night | 46°F | Mostly Clear then Patchy Fog | 2 mph NNE | 3% |
| Sunday | 70°F | Areas Of Fog then Sunny | 1 mph NE | 0% |
| Sunday Night | 48°F | Mostly Clear | 1 mph N | 0% |
| Monday | 72°F | Sunny | 1 mph E | 0% |
| Monday Night | 49°F | Mostly Clear | 2 mph NNE | 0% |
| Tuesday | 72°F | Sunny | 2 mph SE | 1% |
| Tuesday Night | 48°F | Mostly Clear | 2 mph N | 2% |
| Wednesday | 72°F | Sunny | 0 to 3 mph SSE | 2% |
| Wednesday Night | 49°F | Mostly Clear | 2 mph E | 1% |
| Thursday | 75°F | Sunny | 3 mph SSE | 0% |
| Thursday Night | 50°F | Partly Cloudy | 3 mph SE | 0% |
| Friday | 72°F | Mostly Sunny | 5 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov) for Cascade (44.509, -116.044). Updated through the day.
Growing snapshot for Cascade
Last spring frost
May 30
First fall frost
Sep 19
Growing season
110 days
Hardiness zone
5a
More local growing data for Cascade: nearby ZIP 83615 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cascade 1 Nw, Id (12.6 mi from Cascade). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.