Longmont Weather Forecast

    • 63
    • 100

    Slight Chance Thunderstorms

    • 62
    • 98

    Slight Chance Thunderstorms

    • 60
    • 88

    Slight Chance Thunderstorms

    • 62
    • 91

    Chance Thunderstorms

    • 56
    • 89

    Slight Chance Thunderstorms

    • 56
    • 85

    Slight Chance Thunderstorms

Today 16 Jun Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. A 10 percent chance of Thunderstorms in the afternoon. Highs 96 to 100.

Tonight 16 Jun Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Lows in the lower to mid 60s.

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Longmont Temperature Statistics

June Temperature

Vance Brand Airport (3.1 miles)

  • Lowest 1 June, 2021

    42.4 °F
  • Average June

    71.5 °F
  • Highest 13 June, 2021

    96.4 °F

Climate (2011–Present)

Vance Brand Airport (3.1 miles)

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  • Average Low 2011–Present

    36.3 °F
  • Average 2011–Present

    50.8 °F
  • Average High 2011–Present

    66.4 °F
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