Fort Collins, CO Weather & Growing Conditions
Today
57°F
Partly Sunny
Partly sunny. High near 57, with temperatures falling to around 53 in the afternoon. East northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Partly Sunny | 6 mph ENE | 4% |
| Tonight | 34°F | Mostly Cloudy | 2 to 6 mph NNW | 4% |
| Thursday | 60°F | Sunny | 2 to 7 mph SSW | 0% |
| Thursday Night | 35°F | Partly Cloudy | 3 mph WSW | 1% |
| Friday | 60°F | Mostly Sunny | 3 to 7 mph NE | 12% |
| Friday Night | 32°F | Partly Cloudy | 6 mph NNW | 12% |
| Saturday | 60°F | Sunny | 6 mph ESE | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 64°F | Sunny | 2 to 7 mph SSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 2 to 6 mph W | 0% |
| Monday | 65°F | Sunny | 2 to 6 mph SW | 0% |
| Monday Night | 37°F | Partly Cloudy | 5 mph N | 0% |
| Tuesday | 64°F | Mostly Sunny | 5 mph NE | 0% |
| Tuesday Night | 38°F | Partly Cloudy | 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fort Collins, CO
Last spring frost
May 3
First fall frost
Oct 6
Growing season
154 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 4 E, Co (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.