Windsor, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Windsor, a town in Weld County, Colorado.
Today
78°F
Patchy Smoke
Patchy smoke. Mostly sunny, with a high near 78. East southeast wind 8 to 12 mph, with gusts as high as 18 mph.
7-day forecast for Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Patchy Smoke | 8 to 12 mph ESE | 4% |
| Tonight | 55°F | Patchy Smoke | 6 to 14 mph E | 7% |
| Wednesday | 87°F | Patchy Smoke | 6 to 12 mph ENE | 0% |
| Wednesday Night | 57°F | Patchy Smoke then Mostly Clear | 6 to 13 mph NE | 1% |
| Thursday | 97°F | Sunny | 3 to 10 mph N | 0% |
| Thursday Night | 60°F | Mostly Clear | 6 to 12 mph NNE | 0% |
| Friday | 99°F | Sunny | 2 to 10 mph ENE | 0% |
| Friday Night | 62°F | Mostly Clear | 6 to 10 mph NE | 0% |
| Saturday | 102°F | Sunny | 3 to 14 mph NW | 2% |
| Saturday Night | 62°F | Partly Cloudy | 6 to 14 mph NW | 1% |
| Sunday | 100°F | Sunny | 5 to 12 mph ENE | 7% |
| Sunday Night | 64°F | Partly Cloudy | 7 to 13 mph W | 6% |
| Monday | 99°F | Sunny | 6 to 15 mph NNE | 14% |
| Monday Night | 64°F | Partly Cloudy | 7 to 16 mph NNW | 11% |
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
Nearby towns & communities
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Ault
Berthoud
Briggsdale
Dacono
Eaton
Erie
Evans
Firestone
Fort Lupton
Frederick
Garden City
Gilcrest
Greeley
Grover
Hudson
Johnstown
Keenesburg
Kersey
La Salle
Mead
Milliken
Nunn
Orchard
Pierce
Platteville
Raymer (New Raymer)
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 Aug 4, 2026.