Merino, CO Weather & Growing Conditions
Tonight
56°F
Showers And Thunderstorms Likely then Mostly Cloudy
Showers and thunderstorms likely before 11pm, then a slight chance of showers and thunderstorms between 11pm and midnight. Mostly cloudy, with a low around 56. Northwest wind 3 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Showers And Thunderstorms Likely then Mostly Cloudy | 3 to 8 mph NW | 70% |
| Saturday | 77°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 9 mph NW | 78% |
| Saturday Night | 52°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 8 mph NNW | 91% |
| Sunday | 70°F | Chance Rain Showers | 6 mph NE | 46% |
| Sunday Night | 48°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph N | 35% |
| Monday | 71°F | Mostly Sunny | 3 to 8 mph NE | 8% |
| Monday Night | 50°F | Partly Cloudy then Slight Chance Rain Showers | 12 mph ESE | 21% |
| Tuesday | 74°F | Mostly Sunny | 12 to 18 mph SSE | 11% |
| Tuesday Night | 54°F | Chance Showers And Thunderstorms then Mostly Cloudy | 13 to 18 mph SE | 35% |
| Wednesday | 78°F | Partly Sunny | 7 to 12 mph SSE | 10% |
| Wednesday Night | 54°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 7 mph S | 20% |
| Thursday | 79°F | Mostly Sunny | 5 to 8 mph ESE | 8% |
| Thursday Night | 55°F | Partly Cloudy | 8 mph SE | 14% |
| Friday | 79°F | Mostly Sunny | 6 to 10 mph SSE | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Merino, CO
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
5b
Explore more for Merino, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Sterling, Co (14.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.