Johnstown Weather Forecast

    • 57
    • 78

    Partly Sunny

    • 58
    • 79

    Partly Sunny

    • 65
    • 84

    Chance Rain Showers

    • 64
    • 88

    Chance Rain Showers

    • 64
    • 86

    Chance Thunderstorms

    • 59
    • 81

    Partly Sunny

Today 23 Jul Grand Forks

Partly sunny. Highs in the mid 70s. North Winds 10 to 20 Mph.

Tonight 23 Jul Grand Forks

Mostly cloudy with a chance of Showers and Thunderstorms. Some Thunderstorms may produce damaging Winds, large Hail, and heavy rainfall. Near steady temperature in the mid 60s. North Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Johnstown Temperature Statistics

July Temperature

Grand Forks Air Force Base (12.4 miles)

  • Lowest 17 July, 2025

    41.9 °F

  • Average July

    68.9 °F

  • Highest 4 July, 2025

    92.7 °F

Climate (2020–Present)

Grand Forks Air Force Base (12.4 miles)

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  • Average Low 2020–2025

    31.5 °F

  • Average 2020–2025

    42.3 °F

  • Average High 2020–2025

    52.4 °F
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