Fort Collins, CO Weather & Growing Conditions
Today
56°F
Partly Sunny
Partly sunny. High near 56, with temperatures falling to around 51 in the afternoon. East northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 56°F | Partly Sunny | 6 mph ENE | 2% |
| Tonight | 33°F | Mostly Cloudy | 8 mph N | 2% |
| Thursday | 59°F | Sunny | 2 to 7 mph S | 0% |
| Thursday Night | 35°F | Partly Cloudy | 6 mph WSW | 0% |
| Friday | 59°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph ENE | 15% |
| Friday Night | 32°F | Slight Chance Rain Showers then Mostly Clear | 7 mph WNW | 15% |
| Saturday | 61°F | Sunny | 3 to 7 mph NNE | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 64°F | Sunny | 2 to 8 mph SSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 2 to 8 mph W | 0% |
| Monday | 65°F | Sunny | 3 to 7 mph SW | 0% |
| Monday Night | 37°F | Partly Cloudy | 6 mph N | 0% |
| Tuesday | 63°F | Mostly Sunny | 6 mph WSW | 0% |
| Tuesday Night | 38°F | Partly Cloudy | 3 to 7 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 (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.