San Luis, CO Weather & Growing Conditions
Today
86°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. West southwest wind 5 to 15 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 15 mph WSW | 30% |
| Tonight | 56°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 15 mph SE | 27% |
| Wednesday | 86°F | Sunny | 10 to 15 mph WSW | 9% |
| Wednesday Night | 55°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 20 mph SE | 14% |
| Thursday | 88°F | Sunny | 5 to 10 mph W | 5% |
| Thursday Night | 56°F | Mostly Clear | 5 to 20 mph E | 5% |
| Friday | 87°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 15 mph NE | 11% |
| Friday Night | 55°F | Partly Cloudy | 10 to 15 mph SE | 1% |
| Saturday | 88°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 15% |
| Saturday Night | 57°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 10 to 15 mph SE | 15% |
| Sunday | 87°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph SSW | 15% |
| Sunday Night | 57°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 10 to 15 mph SSE | 15% |
| Monday | 87°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph W | 22% |
| Monday Night | 55°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph SSE | 25% |
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 (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.