Castleford, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castleford, a city in Twin Falls County, Idaho.
Tonight
35°F
Slight Chance Rain Showers
A slight chance of rain showers between 11pm and 4am. Cloudy, with a low around 35. Northwest wind 5 to 8 mph. Chance of precipitation is 20%.
7-day forecast for Castleford
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 35°F | Slight Chance Rain Showers | 5 to 8 mph NW | 17% |
| Wednesday | 55°F | Mostly Sunny | 3 to 13 mph W | 7% |
| Wednesday Night | 31°F | Partly Cloudy | 6 mph SW | 0% |
| Thursday | 54°F | Partly Sunny | 5 to 9 mph WSW | 0% |
| Thursday Night | 30°F | Mostly Clear | 8 mph SW | 0% |
| Friday | 55°F | Mostly Sunny | 2 to 6 mph N | 1% |
| Friday Night | 32°F | Partly Cloudy | 6 mph SSE | 1% |
| Saturday | 60°F | Sunny | 3 to 9 mph ESE | 0% |
| Saturday Night | 35°F | Mostly Clear | 9 mph ESE | 0% |
| Sunday | 64°F | Mostly Sunny | 3 to 7 mph ENE | 0% |
| Sunday Night | 36°F | Partly Cloudy | 6 mph SSE | 0% |
| Monday | 63°F | Partly Sunny | 5 mph E | 0% |
| Monday Night | 38°F | Partly Cloudy | 6 mph SSW | 1% |
| Tuesday | 63°F | Mostly Sunny | 6 mph WNW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Castleford (42.521, -114.872). Updated through the day.
Growing snapshot for Castleford
Last spring frost
May 17
First fall frost
Sep 29
Growing season
132 days
Hardiness zone
7a
More local growing data for Castleford: nearby ZIP 83316 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Castleford 2 N, Id (5.3 mi from Castleford). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.