San Luis, CO Weather & Growing Conditions
This Afternoon
69°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 69. Southwest wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Slight Chance Showers And Thunderstorms | 15 mph SW | 19% |
| Tonight | 44°F | Mostly Clear | 5 to 20 mph S | 1% |
| Sunday | 70°F | Sunny | 5 to 15 mph SW | 1% |
| Sunday Night | 43°F | Mostly Clear | 5 to 15 mph S | 0% |
| Monday | 69°F | Mostly Sunny | 0 to 10 mph SSW | 0% |
| Monday Night | 45°F | Mostly Cloudy | 5 to 10 mph S | 3% |
| Tuesday | 66°F | Partly Sunny then Showers And Thunderstorms Likely | 5 to 10 mph SSW | 59% |
| Tuesday Night | 47°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph S | 59% |
| Wednesday | 64°F | Rain Showers Likely then Chance Showers And Thunderstorms | 5 to 10 mph SW | 55% |
| Wednesday Night | 46°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 24% |
| Thursday | 65°F | Showers And Thunderstorms Likely | 0 to 10 mph SW | 60% |
| Thursday Night | 47°F | Showers And Thunderstorms Likely | 5 mph SE | 59% |
| Friday | 64°F | Showers And Thunderstorms Likely | 5 to 10 mph SSW | 61% |
| Friday Night | 46°F | Chance Showers And Thunderstorms | 10 mph S | 44% |
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 Sep 19, 2026.