Johnstown Weather Forecast

    • 4
    • 38

    Increasing Clouds

    • 14
    • 46

    Mostly Sunny

    • 22
    • 46

    Mostly Cloudy

    • 21
    • 48

    Partly Sunny

    • 18
    • 44

    Mostly Cloudy

    • 24
    • 52

    Partly Sunny

    • 26
    • 56

    Partly Sunny

Today 26 Jan Central and South Weld County

Mostly sunny. Highs 33 to 43. West Winds 10 to 15 Mph with Gusts up to 20 Mph.

Tonight 26 Jan Central and South Weld County

Mostly clear. Lows zero to 10 above. West Winds 10 to 15 Mph in the Evening, becoming light.

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Johnstown Temperature Statistics

January Temperature

Fort Collins/Loveland - Northern Colorado Regional Airport (9.3 miles)

  • Lowest 24 January, 2026

    1 °F

  • Average January

    34.9 °F

  • Highest 2 January, 2026

    63 °F

Climate (2021–Present)

Fort Collins/Loveland - Northern Colorado Regional Airport (9.3 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    65.4 °F
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