Fort Collins, CO Weather & Growing Conditions
Today
55°F
Partly Sunny
Partly sunny. High near 55, with temperatures falling to around 51 in the afternoon. East northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 55°F | Partly Sunny | 6 mph ENE | 4% |
| Tonight | 34°F | Mostly Cloudy | 3 to 7 mph NNW | 4% |
| Thursday | 58°F | Sunny | 2 to 7 mph SSW | 0% |
| Thursday Night | 36°F | Partly Cloudy | 5 mph W | 1% |
| Friday | 58°F | Mostly Sunny then Slight Chance Rain Showers | 7 mph NNE | 15% |
| Friday Night | 33°F | Slight Chance Rain Showers then Mostly Clear | 6 mph WNW | 15% |
| Saturday | 59°F | Sunny | 6 mph ESE | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WSW | 0% |
| Sunday | 64°F | Sunny | 2 to 6 mph S | 0% |
| Sunday Night | 39°F | Mostly Clear | 3 to 9 mph W | 0% |
| Monday | 65°F | Sunny | 2 to 6 mph S | 0% |
| Monday Night | 39°F | Partly Cloudy | 5 mph WNW | 0% |
| Tuesday | 63°F | Mostly Sunny | 5 mph SSW | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 2 to 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fort Collins, CO
Last spring frost
May 2
First fall frost
Oct 7
Growing season
157 days
Hardiness zone
5b
Explore more for Fort Collins, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Ft Collins, Co (4.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.