Fort Collins, CO Weather & Growing Conditions
Today
74°F
Slight Chance Rain Showers then Chance Showers And Thunderstorms
A slight chance of rain showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers and thunderstorms likely. Partly sunny. High near 74, with temperatures falling to around 68 in the afternoon. Southwest wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 8 mph SW | 56% |
| Tonight | 48°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 39% |
| Sunday | 69°F | Chance Rain Showers | 3 to 7 mph NE | 43% |
| Sunday Night | 45°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph NNE | 28% |
| Monday | 70°F | Sunny | 3 to 10 mph SW | 2% |
| Monday Night | 47°F | Partly Cloudy | 3 to 10 mph ENE | 12% |
| Tuesday | 73°F | Mostly Sunny | 3 to 9 mph NE | 4% |
| Tuesday Night | 50°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 9 mph ENE | 18% |
| Wednesday | 75°F | Mostly Sunny | 7 mph NE | 13% |
| Wednesday Night | 49°F | Slight Chance Rain Showers then Partly Cloudy | 7 mph NE | 16% |
| Thursday | 78°F | Sunny | 5 to 10 mph W | 4% |
| Thursday Night | 51°F | Partly Cloudy | 5 to 10 mph NNE | 11% |
| Friday | 78°F | Mostly Sunny | 3 to 10 mph ENE | 9% |
| Friday Night | 51°F | Slight Chance Rain Showers then Partly Cloudy | 6 to 10 mph W | 15% |
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 (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.