Horsetooth Mountain Park Weather Forecast

    • 47
    • 69

    Chance Rain Showers

    • 48
    • 70

    Becoming Sunny

    • 53
    • 79

    Partly Sunny

    • 54
    • 80

    Partly Sunny

    • 53
    • 80

    Slight Chance Thunderstorms

    • 50
    • 79

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

Today 17 Sep Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy in the Morning, then becoming mostly cloudy. Chance of rain Showers in the Morning, then a chance of Thunderstorms in the afternoon. Highs 55 to 65. Northwest Winds 10 to 15 Mph in the afternoon. Chance of rain 50 percent.

Tonight 17 Sep Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Chance of rain Showers and slight chance of Thunderstorms in the Evening, then a slight chance of rain Showers after midnight. Lows 35 to 45. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Horsetooth Mountain Park Temperature Statistics

September Temperature

Fort Collins/Loveland - Northern Colorado Regional Airport (9.9 miles)

  • Lowest 6 September, 2025

    46 °F

  • Average September

    68 °F

  • Highest 10 September, 2025

    91.9 °F

Climate (2020–Present)

Fort Collins/Loveland - Northern Colorado Regional Airport (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    37.7 °F

  • Average 2020–2025

    50.8 °F

  • Average High 2020–2025

    65 °F
Get WillyWeather+ to remove ads