Windsor, CO Weather & Growing Conditions
Tonight
54°F
Slight Chance Showers And Thunderstorms then Mostly Cloudy
A slight chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 54. Northwest wind 1 to 5 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 |
|---|---|---|---|---|
| Tonight | 54°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 1 to 5 mph NW | 20% |
| Saturday | 76°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 9 mph NNE | 72% |
| Saturday Night | 50°F | Chance Showers And Thunderstorms | 2 to 7 mph NW | 52% |
| Sunday | 71°F | Showers And Thunderstorms Likely | 6 mph NE | 55% |
| Sunday Night | 47°F | Slight Chance Rain Showers then Partly Cloudy | 1 to 6 mph NE | 24% |
| Monday | 74°F | Sunny | 1 to 8 mph SSE | 2% |
| Monday Night | 49°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 9 mph ENE | 15% |
| Tuesday | 77°F | Mostly Sunny | 3 to 8 mph NE | 9% |
| Tuesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 8 mph ENE | 33% |
| Wednesday | 79°F | Mostly Sunny | 7 mph ENE | 9% |
| Wednesday Night | 52°F | Mostly Cloudy | 6 mph WNW | 13% |
| Thursday | 79°F | Mostly Sunny | 2 to 9 mph NE | 8% |
| Thursday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 9 mph E | 17% |
| Friday | 80°F | Mostly Sunny | 2 to 8 mph E | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Windsor, CO
Last spring frost
May 3
First fall frost
Oct 6
Growing season
154 days
Hardiness zone
5b
Explore more for Windsor, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Ft Collins 4 E, Co (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.