Fort Collins, CO Weather & Growing Conditions
This Afternoon
76°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 76, with temperatures falling to around 70 in the afternoon. Southeast wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Chance Showers And Thunderstorms | 8 mph SE | 45% |
| Tonight | 50°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 31% |
| Sunday | 67°F | Chance Showers And Thunderstorms | 2 to 6 mph NE | 53% |
| Sunday Night | 47°F | Mostly Clear | 2 to 6 mph WNW | 12% |
| Monday | 71°F | Sunny | 1 to 9 mph S | 1% |
| Monday Night | 49°F | Partly Cloudy | 2 to 9 mph E | 4% |
| Tuesday | 76°F | Mostly Sunny | 2 to 7 mph ENE | 4% |
| Tuesday Night | 52°F | Partly Cloudy | 7 mph W | 11% |
| Wednesday | 78°F | Mostly Sunny | 6 mph ENE | 10% |
| Wednesday Night | 52°F | Partly Cloudy | 7 mph NNW | 9% |
| Thursday | 80°F | Sunny | 2 to 9 mph SSE | 4% |
| Thursday Night | 55°F | Partly Cloudy | 2 to 9 mph SW | 8% |
| Friday | 79°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 9 mph S | 21% |
| Friday Night | 54°F | Chance Rain Showers | 5 to 8 mph SW | 26% |
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 Sep 20, 2026.