San Luis, CO Weather & Growing Conditions
Today
51°F
Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 4pm. Sunny, with a high near 51. South southwest wind 5 to 15 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 51°F | Sunny then Slight Chance Rain Showers | 5 to 15 mph SSW | 20% |
| Tonight | 29°F | Chance Rain And Snow Showers | 0 to 10 mph WNW | 26% |
| Thursday | 48°F | Sunny | 0 to 10 mph NNW | 10% |
| Thursday Night | 32°F | Partly Cloudy | 5 mph SSE | 0% |
| Friday | 48°F | Partly Sunny | 5 mph SW | 7% |
| Friday Night | 30°F | Partly Cloudy | 0 to 5 mph SE | 8% |
| Saturday | 49°F | Sunny | 0 to 10 mph N | 11% |
| Saturday Night | 31°F | Mostly Clear | 0 to 5 mph ESE | 1% |
| Sunday | 54°F | Sunny | 0 to 5 mph SSW | 0% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph SSW | 0% |
| Monday | 56°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 36°F | Partly Cloudy | 5 mph SSE | 1% |
| Tuesday | 55°F | Mostly Sunny | 5 mph SSW | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 5 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Luis, CO
Last spring frost
May 31
First fall frost
Sep 23
Growing season
115 days
Hardiness zone
5b
Explore more for San Luis, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, San Luis 1 S, Co (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.