Windsor, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Windsor, a town in Weld County, Colorado.
Tonight
53°F
Slight Chance Showers And Thunderstorms then Mostly Cloudy
A slight chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 53. West northwest wind 1 to 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 1 to 6 mph WNW | 20% |
| Saturday | 76°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 9 mph NE | 71% |
| Saturday Night | 50°F | Chance Showers And Thunderstorms | 2 to 7 mph NW | 50% |
| 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 | 72°F | Sunny | 1 to 8 mph SSE | 2% |
| Monday Night | 48°F | Partly Cloudy | 3 to 9 mph ENE | 14% |
| Tuesday | 77°F | Mostly Sunny | 3 to 8 mph NE | 8% |
| Tuesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 8 mph NE | 33% |
| Wednesday | 79°F | Mostly Sunny | 7 mph ENE | 10% |
| Wednesday Night | 51°F | Mostly Cloudy | 6 mph WNW | 14% |
| Thursday | 79°F | Mostly Sunny | 2 to 9 mph NE | 9% |
| Thursday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 9 mph E | 16% |
| Friday | 80°F | Mostly Sunny | 3 to 9 mph E | 12% |
Forecast source: National Weather Service (api.weather.gov) for Windsor (40.478, -104.915). Updated through the day.
Growing snapshot for Windsor
Last spring frost
May 3
First fall frost
Oct 6
Growing season
154 days
Hardiness zone
5b
More local growing data for Windsor: nearby ZIP 80550 weather · frost dates · planting calendar · Colorado frost dates
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Severance
Climate data from the nearest NOAA station, Ft Collins 4 E, Co (8.8 mi from Windsor). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.