Fort Collins, CO Weather & Growing Conditions
This Afternoon
59°F
Sunny
Sunny. High near 59, with temperatures falling to around 54 in the afternoon. Northeast wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Sunny | 7 mph NE | 0% |
| Tonight | 31°F | Mostly Clear | 3 mph WSW | 0% |
| Wednesday | 57°F | Partly Sunny | 5 mph NE | 2% |
| Wednesday Night | 33°F | Mostly Cloudy | 5 mph NNW | 1% |
| Thursday | 60°F | Sunny | 2 to 7 mph SSE | 0% |
| Thursday Night | 33°F | Partly Cloudy | 5 mph W | 1% |
| Friday | 59°F | Mostly Sunny | 3 to 7 mph ESE | 9% |
| Friday Night | 32°F | Mostly Clear | 5 mph W | 9% |
| Saturday | 61°F | Sunny | 3 to 7 mph S | 1% |
| Saturday Night | 32°F | Clear | 3 mph W | 0% |
| Sunday | 65°F | Sunny | 2 to 6 mph S | 0% |
| Sunday Night | 37°F | Mostly Clear | 2 to 6 mph W | 0% |
| Monday | 66°F | Mostly Sunny | 3 to 7 mph SSE | 0% |
| Monday Night | 37°F | Partly Cloudy | 6 mph NW | 0% |
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 (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.