Castleford, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castleford, a city in Twin Falls County, Idaho.
Today
86°F
Smoke
Smoke. Sunny, with a high near 86. West wind 6 to 10 mph.
7-day forecast for Castleford
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Smoke | 6 to 10 mph W | 0% |
| Tonight | 52°F | Areas Of Smoke | 6 to 9 mph W | 0% |
| Wednesday | 91°F | Areas Of Smoke | 2 to 8 mph WNW | 0% |
| Wednesday Night | 56°F | Patchy Smoke | 5 to 9 mph SSE | 0% |
| Thursday | 99°F | Patchy Smoke | 2 to 8 mph ENE | 0% |
| Thursday Night | 62°F | Patchy Smoke | 3 to 9 mph SE | 0% |
| Friday | 98°F | Sunny | 6 to 12 mph W | 0% |
| Friday Night | 64°F | Mostly Clear | 6 to 14 mph WSW | 0% |
| Saturday | 97°F | Sunny | 7 to 10 mph W | 0% |
| Saturday Night | 64°F | Mostly Clear | 7 to 10 mph WNW | 0% |
| Sunday | 94°F | Sunny | 8 to 13 mph W | 0% |
| Sunday Night | 62°F | Mostly Clear | 7 to 14 mph W | 0% |
| Monday | 93°F | Sunny | 12 mph WNW | 0% |
| Monday Night | 61°F | Mostly Clear | 7 to 13 mph W | 1% |
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 Aug 4, 2026.