Castle Valley, CO Weather & Growing Conditions
Overnight
37°F
Mostly Cloudy
Mostly cloudy, with a low around 37. Southeast wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 37°F | Mostly Cloudy | 10 mph SE | 4% |
| Wednesday | 46°F | Chance Rain And Snow Showers then Rain And Snow Showers Likely | 5 to 10 mph SSW | 79% |
| Wednesday Night | 36°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph WNW | 19% |
| Thursday | 48°F | Mostly Sunny | 5 mph SW | 0% |
| Thursday Night | 38°F | Mostly Cloudy | 5 mph E | 3% |
| Friday | 49°F | Mostly Sunny | 5 mph N | 7% |
| Friday Night | 35°F | Mostly Clear | 5 to 10 mph NNE | 1% |
| Saturday | 51°F | Sunny | 5 mph N | 0% |
| Saturday Night | 38°F | Mostly Clear | 5 to 10 mph ENE | 0% |
| Sunday | 54°F | Sunny | 0 to 5 mph SSW | 0% |
| Sunday Night | 40°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Monday | 54°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
| Monday Night | 41°F | Partly Cloudy | 0 to 5 mph ENE | 1% |
| Tuesday | 53°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Castle Valley, CO
Last spring frost
Apr 20
First fall frost
Oct 21
Growing season
182 days
Hardiness zone
6b
Explore more for Castle Valley, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Gateway 1Ene, Co (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.