Fort Collins, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Collins, a city in Larimer County, Colorado.
Today
59°F
Sunny
Sunny. High near 59, with temperatures falling to around 54 in the afternoon. Northeast wind 7 to 10 mph, with gusts as high as 17 mph.
7-day forecast for Fort Collins
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Sunny | 7 to 10 mph NE | 0% |
| Tonight | 32°F | Mostly Clear | 2 to 6 mph WNW | 0% |
| Wednesday | 58°F | Partly Sunny | 5 mph NE | 4% |
| Wednesday Night | 36°F | Mostly Cloudy | 6 mph NNW | 4% |
| Thursday | 61°F | Sunny | 6 mph N | 0% |
| Thursday Night | 36°F | Partly Cloudy | 3 mph WSW | 1% |
| Friday | 60°F | Mostly Sunny | 6 mph ENE | 5% |
| Friday Night | 34°F | Partly Cloudy | 5 mph W | 5% |
| Saturday | 59°F | Sunny | 5 to 8 mph N | 1% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 62°F | Sunny | 1 to 5 mph SSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 0% |
| Monday | 67°F | Sunny | 3 mph SE | 0% |
| Monday Night | 40°F | Partly Cloudy | 1 to 5 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Fort Collins (40.548, -105.065). Updated through the day.
Growing snapshot for Fort Collins
Last spring frost
May 3
First fall frost
Oct 6
Growing season
154 days
Hardiness zone
5b
More local growing data for Fort Collins: nearby ZIP 80525 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ft Collins 4 E, Co (3.5 mi from Fort Collins). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.