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: 2:30 pm MST Feb 16, 2025
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  • Tonight

    Tonight: Patchy fog after 11pm.  Otherwise, partly cloudy, with a low around -11. North wind 3 to 8 km/h.

    Low: -11 °C

    Patchy Fog


  • Washington's
    Birthday

    Washington's Birthday: A 30 percent chance of snow, mainly after 11am.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near -1. Northeast wind 5 to 10 km/h.  New snow accumulation of less than a half centimeter possible.

    High: -1 °C

    Chance Snow
    and Patchy
    Fog

  • Monday
    Night

    Monday Night: Snow likely, mainly after 8pm.  Mostly cloudy, with a low around -13. Northeast wind 5 to 8 km/h.  Chance of precipitation is 60%. New snow accumulation of less than a half centimeter possible.

    Low: -13 °C

    Snow Likely


  • Tuesday

    Tuesday: A 20 percent chance of snow.  Partly sunny, with a high near -6. East northeast wind 5 to 11 km/h.

    High: -6 °C

    Slight Chance
    Snow

  • Tuesday
    Night

    Tuesday Night: A 40 percent chance of snow before 11pm.  Mostly cloudy, with a low around -17. East northeast wind 5 to 10 km/h becoming calm  after midnight.

    Low: -17 °C

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near -6.

    High: -6 °C

    Partly Sunny


  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of snow.  Mostly cloudy, with a low around -14.

    Low: -14 °C

    Slight Chance
    Snow

  • Thursday

    Thursday: A chance of snow.  Partly sunny, with a high near -1.

    High: -1 °C

    Chance Snow


  • Thursday
    Night

    Thursday Night: A chance of snow before 11pm.  Mostly cloudy, with a low around -9.

    Low: -9 °C

    Chance Snow
    then Partly
    Cloudy



  • Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around -11. North wind 3 to 8 km/h.

    Washington's Birthday: A 30 percent chance of snow, mainly after 11am. Patchy fog before 8am. Otherwise, partly sunny, with a high near -1. Northeast wind 5 to 10 km/h. New snow accumulation of less than a half centimeter possible.

    Monday Night: Snow likely, mainly after 8pm. Mostly cloudy, with a low around -13. Northeast wind 5 to 8 km/h. Chance of precipitation is 60%. New snow accumulation of less than a half centimeter possible.

    Tuesday: A 20 percent chance of snow. Partly sunny, with a high near -6. East northeast wind 5 to 11 km/h.

    Tuesday Night: A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around -17. East northeast wind 5 to 10 km/h becoming calm after midnight.

    Wednesday: Partly sunny, with a high near -6.

    Wednesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around -14.

    Thursday: A chance of snow. Partly sunny, with a high near -1.

    Thursday Night: A chance of snow before 11pm. Mostly cloudy, with a low around -9.

    Friday: Mostly sunny, with a high near 4.

    Friday Night: Mostly clear, with a low around -6.

    Saturday: Sunny, with a high near 11.

    Saturday Night: Mostly clear, with a low around -2.

    Sunday: Mostly sunny, with a high near 16.



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

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