Fort Collins, CO Weather & Growing Conditions
Overnight
59°F
Patchy Smoke
Patchy smoke. Mostly cloudy, with a low around 59. Northeast wind around 10 mph, with gusts as high as 16 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Patchy Smoke | 10 mph NE | 11% |
| Tuesday | 78°F | Patchy Smoke | 8 to 12 mph E | 7% |
| Tuesday Night | 54°F | Patchy Smoke | 6 to 12 mph E | 8% |
| Wednesday | 87°F | Patchy Smoke | 6 to 12 mph ENE | 1% |
| Wednesday Night | 57°F | Patchy Smoke then Mostly Clear | 6 to 12 mph NE | 1% |
| Thursday | 97°F | Sunny | 3 to 10 mph NNE | 1% |
| Thursday Night | 60°F | Mostly Clear | 7 to 10 mph N | 0% |
| Friday | 99°F | Sunny | 2 to 10 mph ENE | 0% |
| Friday Night | 62°F | Mostly Clear | 7 to 10 mph S | 0% |
| Saturday | 101°F | Sunny | 2 to 14 mph NW | 3% |
| Saturday Night | 62°F | Partly Cloudy | 7 to 14 mph NW | 1% |
| Sunday | 100°F | Sunny | 5 to 12 mph NE | 9% |
| Sunday Night | 64°F | Partly Cloudy | 7 to 13 mph W | 6% |
| Monday | 98°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 15 mph N | 17% |
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 Aug 4, 2026.