Blanca, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blanca, a town in Costilla County, Colorado.
Tonight
30°F
Mostly Clear
Mostly clear, with a low around 30. East northeast wind 0 to 5 mph.
7-day forecast for Blanca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Mostly Clear | 0 to 5 mph ENE | 0% |
| Wednesday | 53°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 15 mph S | 15% |
| Wednesday Night | 27°F | Slight Chance T-storms | 0 to 10 mph NNW | 20% |
| Thursday | 50°F | Sunny | 0 to 10 mph NW | 8% |
| Thursday Night | 29°F | Partly Cloudy | 5 mph SE | 0% |
| Friday | 50°F | Mostly Sunny | 0 to 5 mph SSW | 5% |
| Friday Night | 27°F | Partly Cloudy | 0 to 5 mph ENE | 6% |
| Saturday | 51°F | Sunny | 0 to 10 mph NNW | 7% |
| Saturday Night | 27°F | Mostly Clear | 0 to 5 mph E | 0% |
| Sunday | 54°F | Sunny | 0 to 5 mph SSE | 0% |
| Sunday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Monday | 57°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 31°F | Partly Cloudy | 0 to 5 mph SE | 1% |
| Tuesday | 56°F | Mostly Sunny | 0 to 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Blanca (37.439, -105.514). Updated through the day.
Growing snapshot for Blanca
Last spring frost
May 25
First fall frost
Sep 22
Growing season
117 days
Hardiness zone
5a
More local growing data for Blanca: nearby ZIP 81123 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Blanca 4 Nw, Co (4.7 mi from Blanca). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.