Fort Collins, CO Weather & Growing Conditions
Overnight
53°F
Patchy Smoke
Patchy smoke and a slight chance of rain showers. Mostly cloudy. Low around 53, with temperatures rising to around 55 overnight. East northeast wind around 7 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Patchy Smoke | 7 mph ENE | 15% |
| Tuesday | 74°F | Patchy Smoke | 7 to 12 mph ESE | 11% |
| Tuesday Night | 52°F | Patchy Smoke | 3 to 13 mph ESE | 10% |
| Wednesday | 84°F | Patchy Smoke | 3 to 12 mph ENE | 3% |
| Wednesday Night | 55°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Thursday | 93°F | Sunny | 3 to 9 mph NNW | 2% |
| Thursday Night | 60°F | Mostly Clear | 9 mph NW | 0% |
| Friday | 95°F | Sunny | 3 to 12 mph NNE | 1% |
| Friday Night | 61°F | Mostly Clear | 7 to 12 mph SW | 0% |
| Saturday | 97°F | Sunny | 6 to 12 mph NNW | 4% |
| Saturday Night | 64°F | Partly Cloudy | 10 mph WNW | 1% |
| Sunday | 96°F | Mostly Sunny | 6 to 10 mph NNE | 14% |
| Sunday Night | 64°F | Partly Cloudy | 10 to 14 mph WSW | 7% |
| Monday | 94°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 to 12 mph NE | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fort Collins, CO
Last spring frost
May 21
First fall frost
Sep 29
Growing season
128 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, Buckhorn Mtn 1 E, Co (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.