National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 40.16°N 105.12°W (Text-Only)
NWS Forecast for: Longmont CO
Issued by: National Weather Service Denver-Boulder, CO
Last Update: 2:08 pm MDT Jul 12, 2025		Print

  • Tonight

    Tonight: Mostly clear, with a low around 15. Calm wind.

    Low: 15 °C

    Mostly Clear


  • Sunday

    Sunday: Sunny, with a high near 34. Light and variable wind becoming east 6 to 11 km/h in the morning. Winds could gust as high as 26 km/h.

    High: 34 °C

    Sunny


  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 17. East wind 6 to 11 km/h becoming light and variable after midnight. Winds could gust as high as 26 km/h.

    Low: 17 °C

    Partly Cloudy


  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 34. Light and variable wind becoming west 8 to 13 km/h in the morning. Winds could gust as high as 27 km/h.

    High: 34 °C

    Sunny then
    Chance
    T-storms

  • Monday
    Night

    Monday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 15. Southwest wind 5 to 13 km/h, with gusts as high as 27 km/h. Chance of precipitation is 20%.

    Low: 15 °C

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 33.

    High: 33 °C

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 14.

    Low: 14 °C

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 31.

    High: 31 °C

    Partly Sunny
    then T-storms
    Likely

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 14.

    Low: 14 °C

    Chance
    T-storms then
    Mostly Cloudy



    • Tonight: Mostly clear, with a low around 15. Calm wind.

    Sunday: Sunny, with a high near 34. Light and variable wind becoming east 6 to 11 km/h in the morning. Winds could gust as high as 26 km/h.

    Sunday Night: Partly cloudy, with a low around 17. East wind 6 to 11 km/h becoming light and variable after midnight. Winds could gust as high as 26 km/h.

    Monday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 34. Light and variable wind becoming west 8 to 13 km/h in the morning. Winds could gust as high as 27 km/h.

    Monday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 15. Southwest wind 5 to 13 km/h, with gusts as high as 27 km/h. Chance of precipitation is 20%.

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 33.

    Tuesday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 14.

    Wednesday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 31.

    Wednesday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 14.

    Thursday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 28.

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 14.

    Friday: A chance of showers and thunderstorms. Mostly sunny, with a high near 33.

    Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 15.

    Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 33.


    Longmont CO
     40.16°N 105.12°W (Elev. 5000 m)

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