Fort Collins, CO Weather & Growing Conditions
Today
77°F
Patchy Smoke
Patchy smoke. Mostly sunny. High near 77, with temperatures falling to around 75 in the afternoon. East southeast wind 8 to 12 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Patchy Smoke | 8 to 12 mph ESE | 9% |
| Tonight | 54°F | Patchy Smoke | 5 to 13 mph E | 9% |
| Wednesday | 86°F | Patchy Smoke | 5 to 10 mph ENE | 2% |
| Wednesday Night | 58°F | Patchy Smoke then Mostly Clear | 5 to 12 mph WNW | 1% |
| Thursday | 95°F | Sunny | 3 to 9 mph N | 1% |
| Thursday Night | 62°F | Mostly Clear | 7 to 10 mph NW | 0% |
| Friday | 97°F | Sunny | 2 to 10 mph ENE | 0% |
| Friday Night | 64°F | Mostly Clear | 7 to 10 mph SW | 0% |
| Saturday | 99°F | Sunny | 3 to 12 mph ENE | 4% |
| Saturday Night | 65°F | Partly Cloudy | 8 to 12 mph WNW | 2% |
| Sunday | 98°F | Sunny | 5 to 12 mph ENE | 11% |
| Sunday Night | 66°F | Partly Cloudy | 12 mph W | 6% |
| Monday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 to 13 mph NNE | 24% |
| Monday Night | 65°F | Partly Cloudy | 8 to 14 mph NW | 14% |
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 Aug 4, 2026.